RVM/U-L4 Module BASICS Flow Monitor..."RVM/U-L4 Module ATEX ". Any additional or different...

RVM/U-L4 Module BASICSFlow Monitor

Operation manual

Series RVM/U-L4Type RVM/U-L40002 thru RVM/U-L4/3

Read this manual prior to performing any task!

RVM/U-L4 Module BASICS, 1, en_US

© Meister Strömungstechnik GmbH 2014

Meister Strömungstechnik GmbH

Im Gewerbegebiet 2

63831 Wiesen

Germany

Telephone: +49 6096 9720 - 0

Fax: +49 6096 9720 - 30

E-mail: [email protected]

Internet: www.meister-flow.com

These instructions were compiled by:

Meister Strömungstechnik GmbH

Subject to change without notice

03.11.2017RVM/U-L4 Module BASICS Flow Monitor2

These instructions facilitate the safeand efficient handling of a flow monitor(referred to as "device" in the fol-lowing). The instructions are an inte-gral part of the device and must bekept within easy reach for the per-sonnel in the immediate vicinity of thedevice at all times. Personnel mustcarefully read and understand theseinstructions before commencing allwork. The basic requirement for safework is adherence to all safety andhandling instructions stipulated inthese instructions. The local accident-prevention regulations and generalsafety standards and regulations forthe field of application of the devicealso apply. Illustrations in these instruc-tions are provided to aid generalunderstanding and might deviate fromthe actual model. No claims can bederived from any such differences.

Limitations of liability

All details and instructions in thismanual have been compiled underconsideration of the valid standardsand regulations, the current state-of-technology and our many years ofknowledge and experience. The manu-facturer does not accept any liabilityarising from:

n non-observance of any details inthese instructions

n improper use of the device, or usethat is not in accordance withthese instructions

n use of non-trained personneln unauthorized retrofitting or tech-

nical changes that have not beenauthorized by the manufacturer

n use of non-approved replacementparts

The duties and obligations agreedupon in the delivery contract apply infull, as well as the general terms andconditions, the terms of delivery by themanufacturer and the valid legal regu-lations applicable at the conclusion ofthe contract.

Copyright

These operating instructions are pro-tected by copyright.

Except for internal purposes, transferof these instructions to third-parties,copying them in any way– even in part – as well as dissemina-tion and/or communication of their con-tent is forbidden without prior writtenauthorization from Meister Strömung-stechnik ("manufacturer"). Violationsare subject to claims for indemnifica-tion. The manufacturer reserves theright to assert additional claims.

Copyright is the property of the manu-facturer.

© Meister Strömungstechnik GmbH

Im Gewerbegebiet 2

63831 Wiesen

Germany

Supplemental directives

03.11.2017 RVM/U-L4 Module BASICS Flow Monitor 3

Table of contents1 Overview...................................................................................................... 7

1.1 Short description.................................................................................. 71.2 Warranty and guarantee provisions..................................................... 71.3 Customer service................................................................................. 7

2 Safety........................................................................................................... 82.1 Explanation of symbols........................................................................ 82.2 Correct use in accordance with these instructions............................... 92.3 Special precautions............................................................................ 112.3.1 Hazards from electrical current........................................................ 112.3.2 Mechanical hazards........................................................................ 122.3.3 Hazards from high or low temperatures.......................................... 122.3.4 Radiation hazards........................................................................... 132.3.5 Hazards caused by media............................................................... 132.4 Personnel requirements..................................................................... 132.5 Personal safety equipment................................................................. 142.6 Protective systems............................................................................. 152.7 Replacement parts............................................................................. 152.8 Environmental protection................................................................... 162.9 Responsibility of the owner................................................................ 16

3 Design and function................................................................................. 193.1 Overview............................................................................................ 193.2 Device description.............................................................................. 193.3 Component description...................................................................... 20

4 Transport, packaging and storage.......................................................... 214.1 Safety instructions for transport......................................................... 214.2 Transport inspection........................................................................... 214.3 Packaging.......................................................................................... 214.4 Symbols on the shipping box............................................................. 224.5 Storage............................................................................................... 22

5 Installation and initial startup.................................................................. 235.1 Safety................................................................................................. 23

Table of contents


5.2 Requirements at the place of installation........................................... 235.3 Preparatory work................................................................................ 245.4 Installation in the pipe system............................................................ 275.5 Initial startup....................................................................................... 305.6 Electrical connection.......................................................................... 305.6.1 Switch contact SG-15 with connector in compliance with

EN175301-803................................................................................ 315.6.2 Plug connector M12x1.................................................................... 325.6.3 Cable............................................................................................... 335.6.4 Degree of protection (IP-Code)....................................................... 335.7 Grounding the device......................................................................... 335.8 Plug connection.................................................................................. 345.9 Contact protection measures............................................................. 36

6 Operation................................................................................................... 396.1 Switch point adjustment..................................................................... 396.2 Checking the flow............................................................................... 41

7 Troubleshooting........................................................................................ 427.1 Safety................................................................................................. 427.2 Troubleshooting guide........................................................................ 44

8 Maintenance.............................................................................................. 468.1 Safety................................................................................................. 468.2 Maintenance plan............................................................................... 468.3 Removal from the pipe system........................................................... 478.4 Disassembly....................................................................................... 488.5 Maintenance....................................................................................... 528.5.1 Cleaning.......................................................................................... 528.5.2 Parts replacement........................................................................... 538.5.3 Assembly......................................................................................... 538.5.4 Switch contact replacement............................................................ 578.6 Measures to be taken after maintenance work.................................. 60

9 Disassembly and disposal....................................................................... 619.1 Safety................................................................................................. 619.2 Disassembly....................................................................................... 61

Table of contents


9.3 Return Materials................................................................................. 619.3.1 Return Materials Authorization........................................................ 619.4 Disposal............................................................................................. 62

10 Technical data........................................................................................... 6310.1 Device data plate............................................................................. 6310.2 Switch contact rating plate............................................................... 6310.3 Dimension sheet.............................................................................. 6410.4 General specifications...................................................................... 6510.5 Electrical specifications.................................................................... 6610.6 Measuring ranges............................................................................ 6810.6.1 Standard measuring ranges.......................................................... 6810.7 Operating data................................................................................. 68

11 Appendix................................................................................................... 7011.1 Tightening torque.............................................................................. 7011.2 Replacement parts........................................................................... 7111.3 Tools................................................................................................. 7311.4 Sealant............................................................................................. 7311.5 Lubricants......................................................................................... 74

12 Index.......................................................................................................... 75

Table of contents


1 Overview1.1 Short description

Fig. 1: RVM/U-L4 flow monitor

1 Switch point adjustment scale2 Switch contact with female socket

or connection cable

The flow monitor RVM/U-L4 monitorsthe continuous flow of gaseous media.It is designed for installation in pipesystems.

A float inside the device is moved bythe medium flowing through it. Thedesired switch point can be set on theswitch point adjustment scale, wherebythe arrow on the switch contact isaligned to the desired volume flowvalue on the switch point adjustmentscale.

External measuring devices can beconnected at the socket.

1.2 Warranty and guar-antee provisions

Warranty and guarantee provisions arecontained in the general terms andconditions of the manufacturer.

1.3 Customer serviceFor technical support, please contactour customer service department (forcontact details, see Page 2).

Furthermore, our staff is always inter-ested in receiving new information andexperiences gained from application ofthe device, which may be useful inimproving our products.

Overview

Customer service


2 SafetyThis chapter provides an overview ofimportant safety aspects required foroptimum protection of personnel aswell as for safe installation and safeoperation of the device.

Non-observance of the handling andsafety instructions listed in this manualmay result in hazardous/dangerousconditions and in damage to property.

2.1 Explanation of sym-bols

Safety instructions

Safety instructions in this manual aremarked by symbols. The safety instruc-tions are preceded by signal words thatindicate the level of danger/hazard.

To prevent accidents or injury to per-sons as well as damage to property,always observe the safety instructionsand proceed carefully.

L DANGER

This combination of symbol andsignal word indicates an immediate,dangerous condition that results indeath or serious injury if it is notavoided.

L WARNING

This combination of symbol andsignal word indicates a possiblydangerous condition that mightresult in death or serious injury if itis not avoided.

L CAUTION

This combination of symbol andsignal word indicates a possiblydangerous condition that mightresult in minor or slight injury if it isnot avoided.

NOTICE

Safety

Explanation of symbols


This combination of symbol andsignal word indicates a possiblydangerous condition that mightresult in damage to property and tothe environment if it is not avoided.

Tips and recommendations

This symbol emphasizes useful tipsand recommendations as well as infor-mation for efficient and failure-freeoperation.

Signs used in these instructions

The following signs and highlightingsare used in these instructions to iden-tify handling instructions, the descrip-tion of results, lists/enumerations, ref-erences and other elements:

Designates step-by-step han-dling instructions

ð Designates a state or anautomatic sequence as aresult of a specific operatingstep

n Designates randomly ordered enu-merations and list entries

Ä “Signs used in these instructions”on page 9, designates references tochapters in these instructions

2.2 Correct use inaccordance withthese instructions

The device is designed and con-structed exclusively for the intendeduse described herein.

Table 1: Correct use in non-hazardareas

The flow monitor serves exclusivelyto monitor the continuous flow ofgaseous media within a temperaturerange of -20 °C to 120 °C (optional:160 °C) at a maximum operatingpressure of 300 bar (brass version)and 350 bar (stainless steel version).

Correct use in explosion-hazardzones

For employment in explosion-hazardzones, changed conditions apply forthe intended use

The intended use in explosion-hazardzones is described in the OperatingInstructions for "RVM/U-L4 ModuleATEX".

Intended use in explosion-hazardzones includes the observance of allspecifications in these OperatingInstructions, as well as those for"RVM/U-L4 Module ATEX ".

Any additional or different application,above and beyond the correct use inaccordance with these instructions, isdeemed as incorrect use.

L WARNING

Danger due to incorrect use!

Safety

Correct use in accordance with these instructions


– Use the flow monitor only withinthe stipulated performancelimits

– Do not subject the flow monitorto severe temperature fluctua-tions

– Do not use the flow monitor withquick acting valves

– Do not use the flow monitor withsolenoid valves

– Do not subject the flow monitorto vibrations

– Do not subject the flow monitorto pressure surges

– Do not use the flow monitor withmedia containing solids or abra-sives

– Only use the flow monitor withmedia previously approved bythe manufacturer

– Do not use the flow monitor asthe sole monitoring device toprevent dangerous conditions

– Do not install the flow monitoras a load bearing part within apipeline system

– The flow monitor must beinstalled so that it is protectedfrom damage by mechanicalforce. If necessary, install anappropriate impact protectiondevice.

Incorrect use of the flow monitormay result in dangerous conditions.

All claims for damages due to incorrectuse are excluded.

Safety

Correct use in accordance with these instructions


2.3 Special precautionsThe following section lists residualrisks that might arise from the device.

To reduce health risks and preventdangerous conditions, observe thesafety instructions listed here as wellas the safety instruction in the otherchapters of these Operating Instruc-tions.

L DANGER

Employment of the device in explo-sion-hazard zones requires theobservance of the OperatingInstructions for "RVM/U-L4 ModuleATEX" including all hazard state-ments and warnings, therein.

These Operating Instructions cannotcover all conceivable dangers becausemany dangers arise, not from thedevice itself, but from the respectivemedia flowing through it. Alwaysobserve the appropriate safety datasheets when using hazardous media!

2.3.1 Hazards from elec-trical current

Electrical current

L DANGER

Danger to life from electrical cur-rent!– Only qualified electricians shall

work on the electrical system.– If the insulation is damaged,

immediately switch off and haverepairs performed.

– Before commencing work onlive parts of the electrical sys-tems and operating equipment,disconnect the equipment andensure that it remains discon-nected for the duration of thework. Observe these 5 safetyrules when doing so:– Isolate (disconnect)– Secure against switching

back on– Check for absence of

voltage– Ground and short– Cover or cordon off other

live parts in the vicinity– Never bridge fuses or put them

out of operation. Alwaysobserve the correct current rat-ings when replacing fuses

– Keep moisture away from liveparts. This can result in short-circuit

There is an immediate risk to lifefrom electrocution on touching liveparts. Damaged electrical insulationor components can be extremelydangerous.

Safety

Special precautions > Hazards from electrical current


2.3.2 Mechanical hazards

L WARNING

Risk of injury due to fracturedhousing and leakage!– Keep within the stipulated oper-

ating limits– Wear personal protective equip-

ment– Avoid severe temperature fluc-

tuations– Avoid pressure surges

Unauthorized temperatures orexcessive pressure may cause theflow monitor body or the processconnections to burst. Injury may becaused by flying debris andescaping media.

L WARNING

Risk of injury on sharp edges andpointed corners!– Proceed with caution when

working near sharp edges andpointed corners

– If in doubt, wear protectivegloves

Sharp edges and pointed cornerscan cause abrasions and skin cuts.

2.3.3 Hazards from highor low temperatures

Hot or cold surfaces

L WARNING

Risk of injury from hot or cold sur-faces!– Always wear temperature-

resistant protective workclothing and protective gloveswhen working near hot/cold sur-faces

– Before commencing work, makesure that all surfaces have beencooled down or warmed up toambient temperature

Surfaces of components may heatup/cool down dramatically due tothe media flowing through them.Skin contact with hot or cold sur-faces may cause severe skin burnor frostbite.

Safety

Special precautions > Hazards from high or low temperatures


2.3.4 Radiation hazardsStrong magnetic fields

L WARNING

Danger to life from strong magneticfields!– Persons with pacemakers must

not be located in the vicinity ofthe device. This could impair thefunction of the pacemaker

– Persons with metal implantsmust not be located in thevicinity of the device. Implantscan heat up or be attracted mag-netically

– Keep ferromagnetic materialsand electromagnets away fromthe magnetic source. Thesematerials could be attracted andfly through the room, therebyinjuring or even killing persons.Minimum clearance: 3 m

– Remove and put away metalobjects before maintenancework (jewelry, watches, writingimplements, etc.)

– Do not place any electronicdevices within the vicinity of themagnetic source. These couldbe damaged

– Do not place any electronicstorage media, credit cards, etc.within the vicinity of the mag-netic source. Data could bedeleted

Strong magnetic fields may causesevere injury or even be fatal, aswell as cause considerable damageto property.

2.3.5 Hazards caused bymedia

Hazardous media

L WARNING

Risk of injury from hazardousmedia!– Observe details in the safety

data sheet of the media– Comply with the safety, accident

prevention and environmentalprotection regulations appro-priate to the media used

– Wear personal protective equip-ment in accordance with thesafety data sheet

If the flow monitor is used for toxic,corrosive or very hot/cold media,there is a risk of serious injury fromescaping media.

2.4 Personnel require-ments

L WARNING

Risk of injury due to insufficientlytrained and qualified personnel!– All work must be performed by

qualified personnel only.– Keep unqualified personnel

away from hazard zones.

If unqualified personnel work on thedevice or are located within itshazard zone, dangers arise whichmay result in serious injury andconsiderable damage to property.

Safety

Personnel requirements


Authorized personnel is to be restrictedto those persons who can be expectedto perform their work reliably. Personswhose ability to respond is influenced,e.g. by drugs, alcohol or medication,are not authorized.

Observe the age and occupational reg-ulations at the site when choosing per-sonnel.

The following lists the personnel quali-fications for the various areas ofactivity:

Qualified electricianDue to specialized training, knowledgeand experience as well as knowledgeof the relevant standards and regula-tions, the qualified electrician is able toindependently perform work on theelectrical systems as well as to detectand avoid possible risks and dangers.

Additionally, the electrician must pro-vide proof of his/her professional quali-fication that certifies his/her ability toperform work on electrical systems.

The qualified electrician must fulfill therequirements contained in the validlegal accident-prevention regulations.

Qualified personnelDue to their specialized training, knowl-edge and experience as well as theirknowledge of the relevant standardsand regulations, qualified personnelare able to independently perform thework assigned to them as well as todetect and avoid possible risks anddangers.

2.5 Personal safetyequipment

Personal safety equipment is used toprotect personnel from hazards/dangers that might impair their safetyor health during work.

When performing the various tasks at,and with the device, personnel mustwear personal safety equipment. Spe-cial reference is made of this in theindividual chapters within these Oper-ating Instructions. The following pro-vides a description of the personalsafety equipment:

n Always wear appropriate personalsafety equipment required in thevarious chapters of these Oper-ating Instructions before com-mencing work.

n Comply with the personal safetyequipment instructions postedwithin the work area.

Description of personal safetyequipment

Additional protective equipmentmust be worn when handling haz-ardous media!As specified in the Safety Data Sheetof the medium, protective equipmentmust be worn when handling haz-ardous media. In addition, the specifi-cations of the system operator must befollowed. If no protective equipment isspecified, suitable protective glovesand goggles must be worn.

The protective equipment is used toprotect against hazardous media leaksand hazardous media residue in thedevice.

Safety

Personal safety equipment


Goggles

The goggles are used to protect theeyes from flying debris and splashingfluid.

Protective gloves

Protective gloves protect the handsfrom friction, burns, grazing, abrasion,surface cuts or deeper injuries, as wellas from direct contact with hot or coldsurfaces.

2.6 Protective systemsIntegration within an emergency-stop concept is required

The device is designed for use as apart of a machine or system. It doesnot have its own controller and doesnot have an autonomous emergency-stop function.

Before starting up the device, installthe emergency-stop equipment andincorporate it into the safety chain ofthe machine or system.

Connect the emergency-stop equip-ment so that if there is an interruptionin the power supply or in the activationof the power supply after an interrup-tion, dangerous conditions areexcluded for persons and valuables.

The emergency-stop equipment mustalways be freely accessible.

2.7 Replacement parts

L WARNING

Risk of injury due to use of incorrectreplacement parts!– Only use original replacement

parts from the manufacturer orapproved by the manufacturer.

– Always contact the manufac-turer in case of doubt.

Use of incorrect or faulty replace-ment parts may result in dangers topersonnel as well as damages, mal-functions or total failure.

Always purchase replacement partsfrom an authorized dealer or directlyfrom the manufacturer (For contactdetails, see Page 2).

Safety

Replacement parts


The replacement parts list is in theannex.

2.8 Environmental pro-tection

NOTICE

Risk to the environment due toimproper handling of environmen-tally hazardous substances!– Always observe the instructions

listed below on the handling anddisposal of substances harmfulto the environment.

– If harmful substances arereleased into the environment,take immediate countermeas-ures. If there is doubt, contactthe local authorities, informthem of the damage and requestinformation on suitable counter-measures to be taken.

Serious environmental damage mayresult if substances harmful to theenvironment are handled incor-rectly, especially if they are dis-posed of improperly.

Cleaning fluids

Solvent-based cleaning fluids containtoxic substances. They must never bereleased into the environment andmust be disposed of by a waste man-agement company.

Lubricants

Lubricants such as greases and oilscontain toxic substances. They mustnever be released into the environmentand must be disposed of by a wastemanagement company.

2.9 Responsibility of theowner

Owner

The owner is the person who operatesthe device himself for business or com-mercial purposes or who cedes suchuse/application to a third-party andwho, during operation of the device,has full legal product stewardship forprotection of the user, the personnel orthird-parties.

Duties of the owner

The device is used in the commercialsector. The owner of the device istherefore subject to legal obligationspertaining to work safety.

In addition to the safety instructionscontained in these Operating Instruc-tions, the safety, accident preventionand environmental protection regula-tions applicable to the field of applica-tion of the device must be observed.

Safety

Responsibility of the owner


In particular, this includes:

n The owner must inform himselfregarding the valid health andsafety regulations and must per-form a risk assessment to addition-ally determine the risks resultingfrom the special work conditionsarising at the location at which thedevice is used, especially in regardto the media used. He must thenimplement these within OperatingInstructions for use of the device.

n For the USA:The "Occupational Health andSafety Act" of 1970 stipulates thatit is the duty of the owner to pro-vide a safe workplace. He musthereby ensure that the device isoperated and maintained com-pliant to valid commercial, indus-trial, local, federal and state laws,standards and regulations.

n For Canada:The "Canadian Centre for Occupa-tional Health and Safety Act" of1978 stipulates that all Canadianshave “…a fundamental right to ahealthy and safe working environ-ment.” It is therefore the duty ofthe owner to provide a safe work-place. He must ensure that thedevice is operated and maintainedcompliant to valid commercial,industrial, local, provincial, territo-rial and federal laws, standardsand regulations.

n Appropriate to the working condi-tions and the media used, theowner must affix signs within theworking area that inform the userof the hazards and dangerspresent.

n During the entire period of use ofthe device, the owner must checkperiodically to ensure that theOperating Instructions correspondto the current state of regulations,and he must make adjustments asnecessary.

n The owner must clearly regulateand determine responsibilities forinstallation, operation, trouble-shooting, maintenance andcleaning.

n The owner must fit/retrofit suitablesafety equipment within the com-plete plant/system.

n The owner must ensure that allstaff/personnel have thoroughlyread and understand these instruc-tions before handling the device.Additionally, he must train the per-sonnel at regular intervals andwarn them of dangers.

n The owner must provide the per-sonnel with the required safetyequipment and must instruct themthat its wear is mandatory.

Additionally, the owner is responsiblefor ensuring that the device is alwayskept in a technically perfect condition.The following therefore applies:

n The owner must implement suit-able safety measures, appropriateto the media used.

n Different media have differentseverities of influence on thesoiling and wear of/to the device.The owner must set suitable main-tenance intervals, depending onthe media flowing through thedevice.

Safety



n The owner must ensure that themaintenance intervals described inthese Operating Instructions areadhered to at all times.

n The owner must ensure that thedevice is completely free of allresidual media before disposal.Remains of corrosive or toxicmaterials must be neutralized.

Safety



3 Design and function3.1 Overview

Fig. 2: Overview

1 Device housing2 Switch contact and female socket

or switch contact with cable3 Switch point adjustment scale

3.2 Device descriptionRVM/U-L4 flow monitors workaccording to the functional principle ofthe variable area flow meter. The flowmonitor is installed into a pipe systemand measures the flow rate of themedium flowing through the pipesystem.

A float inside the flow monitor is movedby the flowing medium. A magneticfield is generated by the magnetsinside the float. The position of the floatis detected by a switch contact. Thedesired switch point can be set on theswitch point adjustment scale bymoving the switch contact.

Applications for RVM/U-L4 flow moni-tors are, for example, supply circuitstransporting gaseous media. Thedevice monitors the volume flow of thesupply medium to ensure proper oper-ation. If the flow drops below thethreshold preset by the operator, theswitch contact (change-over contact)switches or opens (normally open con-tact).

Design and function

Device description


3.3 Component descrip-tion

Switch contact

Fig. 3: Switch contact and femalesocket

A potential-free Reed contact is castinto the switch contact (Fig. 3/1). Thedevice is supplied with a connector(Fig. 3/2).

Switch point adjustment scale

Fig. 4: RVM/U-L4 switch point adjust-ment scale

A scale is applied to the device body,to which the desired switch point canbe adjusted.

Design and function

Component description


4 Transport, packaging and storage4.1 Safety instructions

for transport

Improper transport

NOTICE

The device could be damaged iftransported improperly!– Proceed carefully when

unloading transported pack-ages, both on delivery and whentransporting in-house. Observethe symbols and instructions onthe shipping box

– Remove packaging material justprior to assembly

Objects to be transported may fallor overturn if transported improp-erly. This may result in damage tothe device and/or property.

4.2 Transport inspec-tion

On delivery, make an immediate checkfor completeness and check for trans-port damages.

If there are any visible external trans-port damages, proceed as follows:

n Do not accept the deliveryn Note the damage in the shipping

documents or on the delivery noteof the transporter and have thedriver confirm by signature

n Initiate a claim for damages

Make a claim for each fault as soon asit is detected. Claims for damages canonly be invoked within the valid claimperiods.

4.3 PackagingAbout packaging

The packaging serves to protect theindividual components from transportdamages, corrosion and other dam-ages until they are installed. Do notdiscard the packaging and only removethe device from the shipping boximmediately before installation.

Handling packaging materials

Dispose of packaging material inaccordance with the valid legal regula-tions and local ordinances.

Transport, packaging and storage

Packaging


NOTICE

Danger to the environment due toincorrect disposal!– Dispose of packaging material

in an environmentally safemanner

– Comply with the local disposalregulations. If necessary, havethe packaging disposed of byapproved specialists.

Packaging is made of valuable rawmaterials and can be reused inmany cases or usefully processedand recycled. Improper disposal ofpackaging materials may pose adanger to the environment.

4.4 Symbols on theshipping box

Top

The arrows indicate the top side of thepackage. They must always pointupwards, otherwise the content may bedamaged.

Fragile

Designates packages with breakableor damageable contents.

Handle the package carefully and donot allow it to fall or be subjected to jar-ring or severe vibration.

4.5 StorageStoring the packages

Store the packages under the followingconditions:

n Do not store in the openn Store dry and dust-freen Do not subject to any aggressive

median Protect from direct sunlightn Avoid mechanical vibrations and

shocksn Storage temperature: 0 to 35 °C /

32 °F to 95 °Fn Relative humidity: max. 60 %n Do not stackn If storing for longer than 3 months,

regularly check the general condi-tion of all parts as well as of thepackaging.

Storage instructions in addition to theinstructions listed here may be listedon the packages. Follow these instruc-tions also.

Transport, packaging and storage

Storage


5 Installation and initial startup5.1 SafetyIncorrect installation and initialstartup

L WARNING

Risk of injury due to incorrect instal-lation and initial startup!– Ensure that the site is suffi-

ciently cleared of obstructionsbefore commencing work

– Handle open or sharp edgedcomponents carefully

– Ensure that the assembly loca-tion is orderly and clean! Partsand tools lying about or on topof each other are potentialcauses for accidents

– Assemble components properly.Observe the stipulated tight-ening torque of screws

– Before initial startup, make surethat all installation work hasbeen performed and completedin compliance with the specifi-cations and instructions inthese Operating Instructions

Incorrect installation and initialstartup may result in severe injuryand considerable damage to prop-erty.

Safeguard against restart

L WARNING

Danger to life due to unauthorizedrestart!– Before commencing work,

switch off the power supply tothe entire system/plant andsecure against restart

There is a risk of severe or evenfatal injury due to unauthorizedrestart of the power supply duringinstallation.

5.2 Requirements at theplace of installation

The place of installation must meet thefollowing requirements:

n The device must not be underwater.

n The surrounding area must be suf-ficiently illuminated.

n There must be sufficient space toprevent accumulation of trappedheat.

n The device must not be installedas a supporting part in a pipe con-struction.

n The device may not have anythingaffixed to, or suspended from it.

n The flow monitor must be installedin such a way as to precludedamage by outside force. It mustbe ensured that the flow monitorcannot be damaged. If necessary,install an appropriate impact pro-tection device.

Installation and initial startup

Requirements at the place of installation


n External magnetic fields will influ-ence the switch contact. Keep suf-ficient distance to magnetic fields(e.g. electric motors).

n Piping, process connections orsupports made of ferromagneticmaterial influence the magneticfield of the device. Keep a spaceof minimum 100 mm to thosematerials (e.g. steel).

5.3 Preparatory workThe following criteria must be metduring installation to ensure correctfunctioning of the flow monitor:

L WARNING

– Do not install the flow monitoras a load bearing part in a pipesystem

– Do not use the flow monitor withquick-acting valves

– Do not use the flow monitor withsolenoid valves

Danger due to incorrect installation!If the criteria listed above are notmet when installing the flow mon-itor, dangerous/hazardous condi-tions may arise.

Installation position/direction offlow

Fig. 5: Installation position/direction offlow

Only install the flow monitor in one ofthe positions displayed in the drawing.The medium must flow in the directionof the arrow (from a low to a high scalevalue)


Preparatory work


Unimpeded flow sections

NOTICE

Measuring inaccuracy due to incor-rect installation!– Ensure that the unimpeded flow

sections are maintained– Never reduce the pipe diameter

immediately before the device

The measuring accuracy of the flowmonitor is influenced by its positionwithin the pipe system. Changes incross-section, branch-offs or bendsin the pipe system impair measuringaccuracy.

We recommend Type BS-228 unim-peded flow sections.

Fig. 6: Unimpeded flow sections

1 10x DN2 5x DN

n There must be an unimpeded flowsection of 10xDN (rated width)before the device.

n There must be an unimpeded flowsection of 5xDN (rated width) afterthe device.


Preparatory work


Unimpeded outlet

If the pipe system ends at an unim-peded outlet, the flow monitor must notbe installed directly in front of theopening. The device must always becompletely filled with media to ensuremeasuring accuracy.

Strainer

Fig. 7: Strainer

1 min. 10x DN2 min. 5x DN

If the medium is contaminated bysolids, a strainer must be installedbefore the device ( Ä “Strainer”on page 26).

We recommend a Type SF, SFD orSFM strainer.

Prepare the device

NOTICE

Risk of damage to property due tocontamination!– Ensure that there are no foreign

particles in the device.– Ensure that the device is not

soiled– Do not use any media con-

taining solids.

Contamination and deposits mayimpair the free movement of thefloat, thereby damaging the device.

1. Unpack the device and visuallyinspect the device to ensure thatit is free of packaging materials.

2. Check the device for soiling andflush with clean medium, if nec-essary.


Preparatory work


5.4 Installation in thepipe system

L WARNING

Risk of injury from pressurizedpipes!– Depressurize the pipe system

before installing the device.

If the pipe system is under pressurewhen installing the device, severeinjuries may result.

L WARNING

Risk of injury from hot or cold sur-faces!– Before commencing work,

ensure that the system has beencontrolled to a temperaturerange between 0 und 40°C

– Do not touch any parts of thesystem that are either very hotor very cold.

– Always wear heat-resistant/cold-resistant protective clothing andprotective gloves when workingnear hot/cold surfaces.

Pipelines can heat up/cool downdramatically due to the mediaflowing through them. Skin contactwith hot or cold surfaces may causesevere skin burn or frost bite.

L WARNING

Risk of injury from media in the pipesystem!– Before installation, ensure that

the pipe system is empty anddoes not contain any media res-idue

– Always wear personal protectiveequipment during installation

– Provide suitable drainingdevices (collection tanks, etc.)

If the pipe system contains haz-ardous media, severe injuries maybe caused by escaping media.

NOTICE

Risk of damage to the device due tocontamination in the pipe system!– Ensure that the pipe system is

clean before installing thedevice

– If necessary, flush the pipesystem with clean mediumbefore installation

Dirt and foreign particles enteringthe device can damage the deviceand impair its operation.


Installation in the pipe system


A suitable sealant must be selecteddepending on the condition/composi-tion of the pipe lines, the medium andthe operating and environmental condi-tions. The sealing method describedhere is only an example and cannot beused in all cases.

Sealing the pipe connections

Personnel:n Qualified personnel

1. Nap the thread.

Fig. 8: Apply sealing thread

2. Apply sealing thread (Fig. 8/1) tothe napped area in the threadeddirection. Observe the quantityrecommended by the sealantmanufacturer.

Fig. 9: Pipe connection with sealingthread

ð The pipe line is now readyfor installation (Fig. 9)




Install device in pipe system


Protective equipment:n Protective gloves

Tools:n Fixed spanner

L CAUTION! Do not hold the deviceby its threads. These are sharpedged and may cause injury.

1. Start the threaded end of thedevice onto the thread of theconnecting pipe.

Fig. 10: Screw in the device

2. Fasten the adapter union of thepipeline with an appropriatespanner (Fig. 10/2). When doingso, lock the process connector inplace to prevent slip, using asuitable spanner (Fig. 10/1).

Fig. 11: Screw in the device

3. Keep turning in the adapterunion (Fig. 11/1) while holdingthe process connection of thedevice locked (Fig. 11/2) untilthe connection is tight.

4. Repeat these steps at the otherend of the device.




5.5 Initial startupThe following steps must be takenbefore initial startup and any subse-quent startup (e.g. after removal andinstallation during maintenance).

1. L WARNING! Make sure thatthe plant is operating vibra-tion-free. Vibrations coulddestroy the device. This couldresult in a serious risk ofinjury to the user.

2. L WARNING! Make sure thatthe medium is flowing contin-uously. Pulse-like staggeredloads could destroy thedevice. This could result in aserious risk of injury to theuser.

3. NOTICE! Flush the pipesystem carefully and ensurethat there are no solids orother foreign matter in thesystem. These could impairthe function, or even damagethe device.

5.6 Electrical connec-tion

The electrical connection of the flowmonitor is accomplished through theconnector plug or the cast on powercable leading from the switch housing.The switch contacts employed in thesedevices are potential free and do notrequire a power source. Switch con-tacts and flow monitor have been opti-mally harmonized. After replacement ofa switch contact, the switch point mustbe readjusted.

L DANGER

Danger to life from electrical current– Only qualified electricians shall

work on the electrical system– If the insulation is damaged,

immediately switch off and haverepairs performed.

– Before commencing work onlive parts of electrical systemsand components, disconnectthe equipment and ensure that itremains disconnected for theduration of the work. Observethese 5 safety rules when doingso:– Isolate (disconnect)– Secure against switching

back on– Check for absence of

voltage– Ground and short– Cover or cordon off other

live parts in the vicinity– Never bridge fuses or put them

out of operation. Alwaysobserve the correct current rat-ings when replacing fuses


Electrical connection


– Keep moisture away from liveparts. This may result in short-circuit

There is an immediate risk to lifefrom electrocution on touching liveparts. Damage to the electrical insu-lation or single components can beextremely dangerous.

5.6.1 Switch contactSG-15 with con-nector in compli-ance withEN175301-803

Wiring diagram of the suppliedsocket (EN 175301-803, Form C)front view.

Wiring diagram

Normally Open (NOC):

Fig. 12: Switch position under no-flowcondition

Fig. 13: Pin assignment, plug socket,normally open contact. The ground-pinis not used.

Change Over (COC):



Electrical connection > Switch contact SG-15 with connector in compliance with EN175301-803


Fig. 15: Pin assignment, plug socket,change over contact. The ground-pin isnot used.

5.6.2 Plug connectorM12x1

Wiring diagram, connector M12x1Fig. 16: Pin assignment, connectorM12x1 (Form 15x50)

Wiring diagram

Normally Open (NOC):


Change Over (COC):


Electrical connection > Plug connector M12x1



5.6.3 CableThe individual cores of the cable arenumbered according to the followingconnection diagram.

Wiring diagram

normally open:


5.6.4 Degree of protection(IP-Code)

The specified degree of protection (IP)is only ensured if approved connectionmaterial is used (see following table).

Deviceconnec-tion

Specifi-cationof con-nectionmaterial

Degree ofprotection

EN175301-803withgland

Diameterof con-nectioncable: 5–6mm

IP65

M12x1 Plugcon-nectorM12x1

IP65

Cable - IP67

5.7 Grounding thedevice

When installing the device in a pipesystem, ensure that the device isgrounded to the pipe system to avoid adangerous electrical potential differ-ence.


Grounding the device


5.8 Plug connectionPersonnel:n Qualified electrician

Tools:n Flat-bladed screwdriver

Fig. 20: Detach socket

1. Release the fixing screw(Fig. 20) from the socket

Fig. 21: Remove socket

2. Remove socket (Fig. 21)


Plug connection


Fig. 22: Loosen inner section

3. Remove the inner section fromthe socket by inserting a flat-bladed screwdriver into the slot(Fig. 22/1) and carefully pry outthe inner section.

Fig. 23: Loosen the screw connection

4. Loosen the screw connection Fig. 23/1) by turning it to the left

5. Guide the connecting cablethrough the screw connectioninto the socket

6. Make the connections as shownin the connecting diagram(Fig. 24 und Fig. 25)

7. Place the inner section (Fig. 22)back into the socket and pushuntil it locks on

8. Retighten the screw connection Fig. 23/1) by turning it to theright until tight


Plug connection


9. Place the female socket onto theconnecting plug and tighten thefixing screw (Fig. 20/1).

Fig. 24: Pin assignment, plug socket,Normally Open Contact (Form 15x50)

Fig. 25: Pin assignment, plug socket,Change-Over-Contact (Form 15x50)

5.9 Contact protectionmeasures

The Reed-switches used in the switchcontacts are designed to be very sensi-tive to overload. To prevent destructionof the switch contact, the values speci-fied on the rating plate of the switchcontact must never be exceeded (noteven temporarily).

There is a risk of overload from:

n inductive loadsn capacitive loadsn ohmic loads.

Suitable measures must be taken toprotect against overload (see followingexamples):


Contact protection measures


Inductive load

There is danger of voltage peaks frominductive loads when switching off (upto 10 times the rated voltage). Induc-tive loads are caused by, e.g.:

n Contactors, relaysn Solenoid valvesn Electric motors

Examples of protective measures:

Fig. 26: Example 1

Fig. 27: Example 2

Capacitive loads

There is a danger of high currentpeaks from capacitive loads whenswitching-on the switch contact(exceeding rated current). Capacitiveloads are caused by, e.g.:

n Long connecting cablesn Capacitive consumers

Example of protective measure:

Fig. 28: Protective measure againstcapacitive loads

Ohmic loads

There is a danger of high currentpeaks from ohmic loads whenswitching-on the switch contact. Thereason for this is that the glow filamenthas a low resistance at low tempera-tures. Ohmic loads are caused by, e.g.:

n Filament bulbsn Motors during startup

Examples of protective measures:

Fig. 29: Example 1

Fig. 30: Example 2




Protection against ohmic loads can beachieved through installation of aresistor in the circuit, or by heating theglow filament. For connection to high-impedance consumers (ex. PLC), aprotective circuit is not needed.




6 Operation6.1 Switch point adjust-

mentSetting the switch point of aninstalled device

The following instructions describe theprocedure for a Normally Open Con-tact (NOC). The actual state (open orclosed) can be determined using acontinuity meter.


Tools:n Hex screwdriver

Fig. 31: Loosen set screw

1. Loosen the set screw of theswitch contact (Fig. 31) using aHex screwdriver.

2. Slide the switch contact to theflow value to be monitored.Make sure that the arrow on theswitch contact data plate is inexact alignment with the desiredflow rate on the switch pointadjustment scale.

3. Re-tighten the set screw of theswitch contact (Fig. 31) using aHex screwdriver. When doingso, observe the correct tight-ening torque of the screws.

Ä Chapter 11.1 “Tighteningtorque” on page 70

ð The set switch point corre-sponds to the switch-offpoint of the switch contactby decreasing flow.

Operation

Switch point adjustment


Setting the switch point of a non-installed device

Fig. 32: Loosen the set screw

1. Loosen the set screw of theswitch contact (Fig. 32) using aHex screwdriver.

2. Slide the switch contact to theflow value to be monitored.Make sure that the arrow on theswitch contact data plate is inalignment with the desired flowrate on the switch point adjust-ment scale.

3. Re-tighten the set screw of theswitch contact (Fig. 32) using aHex screwdriver. When doingso, observe the correct tight-ening torque.


ð The set switch point corre-sponds to the switch-offpoint of the switch contactby decreasing flow.

Operation

Switch point adjustment


6.2 Checking the flowReading-off the flow value


Protective equipment:n Goggles

Fig. 33: Reading-off the flow value(example scale)

1. Make sure that the setting arrowand the scale mark of the scaleon the device body are in align-ment. (Fig. 33).

2. Look straight on. By viewing atan angle from above or below,the reading can be falsified.(Parallax error).

3. Read-off the switch value fromthe scale on the device body.

Operation

Checking the flow


7 TroubleshootingThis chapter describes possible mal-functions of the device, their causesand repair.

If malfunctions persist or increase,shorten the maintenance interval tomeet the actual operating conditions.

For malfunctions not described in thischapter, please contact the manufac-turer (see service address on page 2).

7.1 SafetyWork performed incorrectly toremedy a malfunction

L WARNING

Risk of injury due to incorrect repairof malfunction!– Ensure that the site is suffi-

ciently cleared before com-mencing work

– Ensure that the repair locationis orderly and clean! Compo-nents and tools that are lyingabout or on top of each otherare potential causes of acci-dents

– If components have beenremoved, observe correctassembly procedures. Reinstallall fixing/fastening elements andobserve the prescribed tight-ening torque for the screwsÄ Chapter 11.1 “Tighteningtorque” on page 70

– Before placing the device backinto operation, ensure that allwork has been performed andcompleted in compliance withthe specifications and instruc-tions in these Operating Instruc-tions

Work performed incorrectly mayresult in severe injury and consider-able damage to property.

Troubleshooting

Safety


Conduct in case of malfunction

The complete machine or system maybe unsafe if there is a defect at the flowmonitor (e.g. fractured housing).

The following always applies:

1. In case of malfunctions thatpresent an immediate danger topersons or valuables, proceedaccording to the valid emer-gency plans for the system

2. Determine the cause of the mal-function

3. Before repair, ensure that thereis no danger to persons fromescaping media

4. If necessary, allow the pipelineand device to cool down or towarm up before commencingwork

5. Malfunctions must be correctedby qualified personnel

The following troubleshooting guideprovides an indication of who is quali-fied to repair the fault .

Troubleshooting

Safety


7.2 Troubleshooting guide

Fault description Cause Remedy Personnel

The switch contactdoes not switch.

No mediumflowing throughflow monitor

Check that medium isflowing through the pipe-line

Qualifiedpersonnel

Flow is too low orthe switch contactis set too high

n Adjust the switchcontact to a lowerflow rate

n Use the device atanother measuringrange

n Increase the flowrate

Qualifiedpersonnel

Incorrect reduc-tion fitting or pipediameter is toosmall

n Correct pipe diam-eter

Qualifiedpersonnel

Float is stuck Disassemble and cleanthe device

Qualifiedpersonnel

Switch contact isdefective.

n Remedy the causeof the defect (short-circuit, overload)

n Replace the switchcontact

Qualifiedpersonnel

Switch contact ispermanentlyswitched.

Flow is too highor the switch con-tact is set too low

n Reduce the flown Adjust the switch

contact to a higherflow rate

n Use the device atanother measuringrange

Qualifiedpersonnel

Troubleshooting

Troubleshooting guide


Fault description Cause Remedy Personnel

Switch contact ispermanentlyswitched.

Float is stuck Disassemble and cleanthe device

Qualifiedpersonnel

Switch contact isdefective

n Remedy the causeof the defect (short-circuit, overload)

n Replace the switchcontact

Qualifiedpersonnel

The switch point isnot the same as theactual flow rate.

Improper scaleinstalled formedia used

Request proper conver-sion table or scale formedia used

Qualifiedpersonnel

Incorrect reduc-tion fitting or pipediameter is toosmall

n Correct pipe diam-eter

Qualifiedpersonnel

Device is dirty Disassemble and cleanthe device

Qualifiedpersonnel

Device is defec-tive

Remove device fromsystem and contact themanufacturer

Qualifiedpersonnel

Troubleshooting

Troubleshooting guide


8 Maintenance8.1 SafetyMaintenance work performed incor-rectly

L WARNING

Risk of injury due to maintenancework performed incorrectly!– Ensure that the site is suffi-

ciently cleared before com-mencing work.

– Ensure that the repair locationis orderly and clean! Compo-nents and tools that are lyingabout or on top of each otherare potential causes for acci-dents.

– If components have beenremoved, observe correctassembly procedure. Reinstallall fixing/fastening elements andobserve the prescribed tight-ening torque for the screws (seeChapter 11.1).

– Before placing the device backinto operation ensure that allwork has been performed andcompleted in compliance withthe specifications and instruc-tions in these Operating Instruc-tions.

Maintenance work performed incor-rectly can result in severe injury andconsiderable damage to property.

8.2 Maintenance planIntervals for replacement of wearparts

RVM/U-L4 type flow monitors requirevery little maintenance due to the smallnumber of moving parts. The intervalsfor the replacement of wear partsdepends significantly on the operatingconditions as well as on the composi-tion of the medium flowing through thedevice. For this reason, no intervalshave been set by the manufacturer.The operator must determine suitableintervals based on the local conditionand circumstances.

Maintenance

Maintenance plan


Interval Maintenance work Personnel

Visual inspection for dirt/soiling Qualified personnel

Visual inspection for free-movement of float Qualified personnel

Visual inspection for leaks from the device Qualified personnel

Check function of switch contact Qualified personnel

8.3 Removal from thepipe system

The flow monitor must first be removedfrom the pipe system before per-forming maintenance.

L WARNING

Risk of injury from pressurizedlines!– Depressurize the system before

removing the device

Severe injury may result if the pipesystem is under pressure whenremoving the device.

L WARNING

Risk of injury from hot or cold sur-faces!– Before removing the device,

ensure that the machine orsystem and the flow monitorhave been controlled to a tem-perature range between 0 and40°C

– Do not touch any part of themachine or system that is eithervery hot or very cold

– Always wear heat-resistant/cold-resistant protective workclothing and protective gloveswhen working near hot/cold sur-faces

Pipelines can heat up/cool downdramatically due to the mediaflowing through them. Skin contactwith hot or cold surfaces causessevere skin burn or frostbite.

Maintenance

Removal from the pipe system


L WARNING

Risk of injury from media in the pipesystem!– Before removing the device,

ensure that the pipe system isempty and does not containmedia residue

– Always wear personal protectiveequipment when removing thedevice

If the pipe system contains haz-ardous media, severe injury may becaused by escaping media.

L WARNING

Risk of injury from media residue inthe device!– When removing (de-installing

the device from the pipesystem), always wear personalprotective equipment.

– All requirements specified in themedia safety data sheet must beobserved in accomplishing thework task.

– Residue of hazardous media inthe device can result in seriousinjury.

After the pipe system has beenemptied, media residue may still bepresent inside the device. In thecase of hazardous media, this couldresult in serious injury.

Removing the device from the pipesystem


Protective equipment:n Additional protective equipment

must be worn when handling haz-ardous media!


1. Loosen the adapter union of thepipeline using a suitablespanner. When doing so, lockthe process connection ordevice body in place with asecond spanner.

2. Secure the device against fallingand repeat Step 1 at the otherprocess connection.

8.4 DisassemblyTo replace wear parts or to clean thedevice, the flow monitor must first bedisassembled.

L WARNING

Risk of injury due to incorrect disas-sembly!– The device may still contain

media residue– Wear personal protective equip-

ment when working with dan-gerous media

– Improper disassembly maycause serious injuries if dan-gerous media is still presentinside the device

Maintenance

Disassembly


L CAUTION

Risk of injury due to incorrect disas-sembly!– Before disassembling, ensure

that the flow monitor has cooleddown/warmed up to a tempera-ture range between 0 and 40° C

– Wear personal protective equip-ment to protect against haz-ardous media which may still bepresent inside the device

Improper disassembly may result ininjuries.




Protective equipment:n Gogglesn Protective gloves


Special tools:n Threaded ring insertion tooln Test rod

Fig. 34: Insert threaded ring insertiontool (outlet)

1. Insert threaded ring insertiontool into the outlet side of thedevice (Fig. 34) and turn until itrest in the keyway of thethreaded ring

Maintenance

Disassembly


Fig. 35: Loosen threaded ring (outlet)

2. Loosen the threaded ring(Fig. 35). Hold the device bodyin place using a proper sizedspanner wrench.

Fig. 36: Remove threaded ring (outlet)

3. Unscrew and remove thethreaded ring (outlet) from thedevice body (Fig. 36)

Fig. 37: Remove inner parts

4. Carefully turn the device body180° and remove the inner parts(spring and float). (Fig. 37)

Maintenance

Disassembly


Fig. 38: Spring and float

5. The inner parts of the flow mon-itor consist of the spring(Fig. 38/1) and float (Fig. 38/2).

Fig. 39: Insert threaded ring insertiontool (inlet)

6. Insert threaded ring insertiontool into the inlet side of thedevice (Fig. 39) and turn until itrest in the keyway of thethreaded ring

Maintenance

Disassembly


Fig. 40: Loosen threaded ring (inlet)

7. Loosen the threaded ring(Fig. 40). Hold the device bodyin place using a proper sizedspanner wrench.

Fig. 41: Remove threaded ring (inlet)

8. Unscrew and remove thethreaded ring (inlet) from thedevice body (Fig. 41)

8.5 Maintenance

8.5.1 CleaningIt is the responsibility of the operator toestablish appropriate intervals and pro-cedures for cleaning the individualparts of the device. It must be ensuredthat the parts are not damaged duringthe cleaning process. When usingcleaning agents, it must be ensuredthat these are not aggressive to theparts and that there will be no dan-gerous reactions with media residue.Damaged parts must be replaced.

Maintenance

Maintenance > Cleaning


L WARNING

Risk of injury due to impropercleaning!– To protect against hazardous

media residue in the device,wear personal protective equip-ment.

– Do not use cleaning agentswhich may lead to dangerousreactions with media residue.

– All requirements specified in thesafety data sheet must beobserved when handling or oth-erwise using the medium.

– Residue of hazardous mediainside the device can causeserious injury.

The device may still contain mediaresidue.

L CAUTION

Risk of injury due to damaged parts!– Damaged parts must be

replaced– Carefully clean the parts of the

device, so as not to causedamage.

– When cleaning, always wearappropriate personal protectiveequipment.

– Incorrect disassembly canresult in injuries.

If parts of the device are broken ordamaged, they may cause injurydue to sharp edges or splintersduring the cleaning process.



8.5.2 Parts replacementDepending on the operating conditions,wear parts such as float or spring mayhave to be replaced. Steps required toreplace these parts correspond tothose used when assembling thedevice. Ä Chapter 8.5.3 “Assembly”on page 53.

8.5.3 AssemblyAfter cleaning the individual compo-nents, the flow monitor must be reas-sembled.

Maintenance

Maintenance > Assembly



Tools:n Flat-bladed screwdrivern Torque screwdriver and assorted

bladesn Fixed spanner

Special tools:n Threaded ring insertion tooln Test rod

Fig. 42: Insert threaded ring (inlet)

1. Insert the threaded ring (inlet)into the device body (inlet)(Fig. 42)

Fig. 43: Seat threaded ring (inlet)

2. Lightly seat the threaded ring(inlet) with the aid of thethreaded ring insertion tool andtighten with a torque wrench(Fig. 43), observing the propertorque ( Ä Chapter 11.1 “Tight-ening torque” on page 70). Ifnecessary, hold the device bodyin place with an apropriate fixedspanner.

Maintenance



Fig. 44: Inner parts

3. Insert the Spring (Fig. 44/1) intothe float (Fig. 44/2)

Fig. 45: Insert inner parts

4. Insert the float and spring intothe device (Fig. 45)

Maintenance



Fig. 46: Insert threaded ring (outlet)

5. Insert the threaded ring (outlet)into the device body (outlet)(Fig. 46)

Fig. 47: Seat threaded ring (outlet)

6. Lightly seat the threaded ring(outlet) with the aid of thethreaded ring insertion tool andtighten with a torque wrench(Fig. 47), observing the propertorque ( Ä Chapter 11.1 “Tight-ening torque” on page 70). Ifnecessary, hold the device bodyin place with an apropriate fixedspanner.

Maintenance



Fig. 48: Check for smooth operation

7. Check the float for ease ofmovement (Fig. 48) by applyinglight pressure with the test rod

ð If the float moves sluggishly,then disassemble the deviceÄ Chapter 8.4 “Disas-sembly” on page 48 andclean the float and devicebody bore

If the float is still sluggish after havingbeen cleaned several times, contactthe manufacturer.

8.5.4 Switch contactreplacement

Tools:n Flat-bladed screwdriver

Fig. 49: Loosen female socket

1. Loosen the fixing screw of thefemale socket (Fig. 49) with aflat-bladed screwdriver.

Maintenance

Maintenance > Switch contact replacement


Fig. 50: Remove female socket

2. Remove the female socket andgasket (Fig. 50/1) by pullingupwards

Fig. 51: Loosen set screw

3. Using a hex screwdriver(Fig. 51), loosen, then removethe set screw of the switch con-tact

Maintenance



Fig. 52: Remove switch contact

4. Remove the switch contact(Fig. 52) from the device

5. Position the new switch contact,making sure that the cylinder pinslides into the guide.

6. Insert the set screw and tightenjust enough to still allow theswitch contact to move easily.

7. Connect a continuity meter: ForNormally Open Contact (NOC),pin 1 and pin 2 are assigned; forChange Over Contact (COC),pin 1 and pin 3 are assigned.

8. Slide the switch contact in theopposite direction of flow until itstops. The switch contact mustnow be closed.

9. Slowly push the switch contactin the direction of flow, until thecontact opens. This switch pointshould be set as accurately aspossible because it affects theaccuracy of the switch pointadjustment scale values (ifneeded, repeat steps 9 and 10).

10. Tighten the set screw (Fig. 52)observing the proper tighteningtorque of the screw ( Ä Chapter11.1 “Tightening torque”on page 70)

11. Affix the enclosed data plate tothe side of the switch contact sothat the reference arrow is inalignment with the lowest scalemark. If a reference tick mark ison the data plate (recognizableas a thinner line), it is to be usedas the alignment mark. Theadhesive surface must be dryand free of oil and grease.

12. Adjust the desired flow rate (cut-off point) on the switch pointadjustment scale.

13. Attach the female socket andgasket and tighten the fixingscrew.

Maintenance



8.6 Measures to betaken after mainte-nance work

Take the following steps after comple-tion of maintenance work and beforeswitching on the device:

1. Check all previously loosened/released screw connections fortightness.


2. Clean the work area and removeall residual materials, packaging,substances or spills.

Maintenance

Measures to be taken after maintenance work


9 Disassembly and disposalAfter its period of useful life, the devicemust be disassembled and disposed ofin an environmentally safe manner.

9.1 Safety

L WARNING

Risk of injury if disassembled incor-rectly!– Ensure that the site is suffi-

ciently cleared before com-mencing work

– Always wear protective equip-ment when handling hazardousmedia residue

– Handle open, or sharp-edgedcomponents carefully

– Ensure that the workplace isorderly and clean! Componentsand tools that are lying about oron top of each other are poten-tial causes for accidents

– Disassemble components pro-fessionally

– Secure components so that theydo not fall or overturn

– If in doubt, contact the manufac-turer

Media residue, sharp edged compo-nents, pointed ends and corners onand in the device or on tools maycause injury.

9.2 DisassemblyBefore starting disassembly:

n Remove operating materials andpackaging and dispose of properly


Protective equipment:n Protective glovesn Goggles

1. Remove the device from thepipeline ( Ä Chapter 8.3“Removal from the pipe system”on page 47)

2. Disassemble the device.( Ä Chapter 8.4 “Disassembly”on page 48)

3. Clean components properly andremove media residue.

4. Dispose in an environmentallysafe manner.

9.3 Return Materials9.3.1 Return Materials

AuthorizationFor products being returned, regard-less of the reason, the currently validprovisions of the returns policy set byMEISTER will apply. Return shipmentswhich do not comply with the returnspolicy may be refused by MEISTER atthe expense of the consignor.

Disassembly and disposal

Return Materials > Return Materials Authorization


9.4 DisposalIf no return or disposal agreement hasbeen made, recycle disassembledcomponents:

n Scrap metalsn Recycle plastic elementsn Dispose of the remaining compo-

nents according to their materialproperties

NOTICE

Danger to the environment due toincorrect disposal!– Have electrical scrap, electronic

components, lubricants andother supplies disposed of byapproved specialists

– In case of doubt, obtain informa-tion on environmentally safedisposal from the local authorityor special disposal expert

Potential risk to the environmentmay arise due to incorrect disposal.

Disassembly and disposal

Disposal


10 Technical data10.1 Device data plateThe data plate is on the mechanicalpart of the flow monitor/flow meter andcontains the following information:

Fig. 53: Device data plate

10.2 Switch contactrating plate

Fig. 54: Switch contact rating plate

Fig. 55: Switch contact rating plate withpositioning arrow

The rating plate is on the switch con-tact and may provide the followinginformation:

n maximum voltagen maximum currentn maximum powern positioning arrow for cut-off point

Technical data

Switch contact rating plate


10.3 Dimension sheet

Technical data

Dimension sheet


10.4 General specifications

Type Overall dimensions (mm)

G * DN SW L1 L2 T

RVM/U-L40002

1/4 8 17 65 - 10

RVM/U-L40006

1/4 8 17 65 - 10

RVM/U-L40008

1/4 8 17 65 - 10

RVM/U-L40012

1/4 8 17 65 - 10

RVM/U-L4/06

1/4 8 17 65 - 10

RVM/U-L40024

1/4 8 17 65 - 10

RVM/U-L40034

1/4 8 17 65 - 10

RVM/U-L4/2

1/4 8 17 65 - 10

RVM/U-L4/3

1/4 8 17 65 - 10


G * D1 D2 A1 A2 A3 A4 weight(g) **

RVM/U-L40002

1/4 17 17 - - - ca. 57 350

RVM/U-L40006

1/4 17 17 - - - ca. 57 350

RVM/U-L40008

1/4 17 17 - - - ca. 57 350

Technical data

General specifications



G * D1 D2 A1 A2 A3 A4 weight(g) **

RVM/U-L40012

1/4 17 17 - - - ca. 57 350

RVM/U-L4/06

1/4 17 17 - - - ca. 57 350

RVM/U-L40024

1/4 17 17 - - - ca. 57 350

RVM/U-L40034

1/4 17 17 - - - ca. 57 350

RVM/U-L4/2

1/4 17 17 - - - ca. 57 350

RVM/U-L4/3

1/4 17 17 - - - ca. 57 350

* NPT thread on request

**Connecting cable weight, 2m ca. 80g

10.5 Electrical specifications

Change-Over-Contact (COC)

Data Value Unit

Voltage 150 V AC/DC

Current, maximum 1 A

Power, maximum 20 VA

Technical data

Electrical specifications


Normally Open Contact (NOC)

Data Value Unit

Voltage 140 V AC

Voltage 200 V DC

Current, maximum (at 140 V AC) 0,7 A

Current, maximum (at 200 V DC) 1 A


Change-Over-Contact (COC) M12x1 (-20 °C–85 °C)

Data Value Unit

Voltage 125 V AC/DC

Current, maximum 1 A


Normally Open Contact (NOC) M12x1 (-20 °C–85 °C)

Data Value Unit

Voltage 125 V AC/DC

Current, maximum (at 125 V AC) 0,7 A

Current, maximum (at 125 V DC) 1 A


Technical data

Electrical specifications


10.6 Measuring ranges10.6.1 Standard measuring ranges

Type Switch range for air at 1 bar abs. & 20 °C*

Nl/min SCFH SCFM

RVM/U-L40002 0,6 – 2,2 1,3 – 4,7

RVM/U-L40006 1,7 – 6 3,5 – 12,7

RVM/U-L40008 2,5 – 8 5,3 - 17,0

RVM/U-L40012 3 – 12 6,5 - 25,5

RVM/U-L4/06 3 – 22 6,0 - 47,0

RVM/U-L40024 7 – 24 15,0 - 51,0

RVM/U-L40034 12 – 34 25,0 - 72,0

RVM/U-L4/2 16 – 56 34,0 - 119,0

RVM/U-L4/3 20 – 80 42,0 – 170,0

* The specified data are switch-off points (other switch ranges are available onrequest).

10.7 Operating data

Description Value Unit

Max. media temperature 120 (optional 160°C) °C

Min. media temperature

It must be ensured thatthe medium does notfreeze.

-20 °C

Max. operating pressure 300

350

bar (brass)

bar (stainless steel)

Technical data

Operating data


Pressure loss 0,02 – 0,2 bar

Measuring accuracy ± 10 % of full scale value

Operating data for devices employed inexplosion hazard zones differs fromthe above.

Operating data for devices employed inexplosion hazard zones are specifiedin the Operating Instructions for"RVM/U-L4 Module ATEX", Chapter 4.

Technical data

Operating data


11 Appendix11.1 Tightening torque

Component/function

Description Size Torque Qty

Threaded ring Threaded ring(inlet/outlet)

G1/4" 4 Nm 2

Switch contact Cylinder headscrew, hexsocket

M3x10 0,4 Nm 1

Appendix

Tightening torque


11.2 Replacementparts

Appendix

Replacement parts


The following replacement parts drawing provides an example of the constructionof a RVM/U-L4 type flow monitor. The actual configuration may vary depending onthe model.

Item Qty Description

1 1 Threaded ring (inlet)

2 1 Device body

3 1 Float

4 1 Spring

5 1 Threaded ring (outlet)

6 1 Cylinder pin (switch contact)

7 1 Switch contact with male connector

8 1 Female socket and gasket

9 1 Fixing screw, female socket

10 1 Set screw, switch contact

Appendix

Replacement parts


11.3 ToolsThe following tools are required:

Tools

n Fixed spanner 17, 18 mmn Flat-bladed screwdriver, blade

width 5,5 mmn Hexagon socket key 2,5 mmn Torque screwdriver and assorted

blades

Special tools

n Threaded ring insertion tool,RVM/U-L4

n Test rod RVM/U-L4

11.4 Sealant

Before using a sealant, ensure that it iscompatible with the media used andthat it can be employed under thegiven operating conditions.

n Ensure proper sealn Use a suitable sealant. Liquid seal-

ants will damage the flow monitorn Always follow the sealant manu-

facturer's instructions

Appendix

Sealant


11.5 Lubricants

Before using a lubricant, always make sure that it is compatible with the operatingmedium.

For the proper mounting of O-rings, device-specific O-ring installation tools may bepurchased from the manufacturer.

The following lubricants are suitable to facilitate installing the O-rings:

Lubricant O-ring material

NBR EPDM FKM

Glycerine* suitable suitable suitable

Soapy water suitable suitable suitable

* Glycerine must not be used if the device is used for sulfuric acid and/or nitricacid.

Appendix

Lubricants


12 IndexAAssembly . . . . . . . . . . . . . . . . . . 53

CCable . . . . . . . . . . . . . . . . . . . . . 33Component groups . . . . . . . . . . . 20Connected loads

Change-Over-Contact (COC) . . 66

Normally Open Contact (NOC) 67

ConnectorM12x1 . . . . . . . . . . . . . . . . . . 32

Contact . . . . . . . . . . . . . . . . . . . . 7Contact protection measures . . . . . 36Copyright . . . . . . . . . . . . . . . . . . . 3Correct use . . . . . . . . . . . . . . . . . . 9Customer service . . . . . . . . . . . . . 7

DDegree of protection

IP-Code . . . . . . . . . . . . . . . . . 33

Device data plate . . . . . . . . . . . . . 63Device description . . . . . . . . . . . . 19Dimension sheet . . . . . . . . . . . . . 64Disassembly

disposal . . . . . . . . . . . . . . . . . 61

Maintenance . . . . . . . . . . . . . 48

Disposal . . . . . . . . . . . . . . . . . . . 62

EElectrical connection . . . . . . . . . . 30employment . . . . . . . . . . . . . . . . . 9

Environmental protection . . . . . . . 16cleaning fluids . . . . . . . . . . . . 16

lubricants . . . . . . . . . . . . . . . . 16

FFault table . . . . . . . . . . . . . . . . . . 44flow value . . . . . . . . . . . . . . . . . . 41

GGeneral

safety . . . . . . . . . . . . . . . . . . . 8

HHazard

electrical current . . . . . . . . . . . 11

Hazardsmechanical . . . . . . . . . . . . . . 12

media . . . . . . . . . . . . . . . . . . 13

radiation . . . . . . . . . . . . . . . . 13

temperature . . . . . . . . . . . . . . 12

IInitial startup . . . . . . . . . . . . . . . . 30Installation

pipe system . . . . . . . . . . . . . . 27

preparatory work . . . . . . . . . . . 24

LLimitation of liability . . . . . . . . . . . . 3Lubricant . . . . . . . . . . . . . . . . . . 74

Index


MMaintenance . . . . . . . . . . . . . . . . 52Maintenance plan . . . . . . . . . . . . 47Measuring range . . . . . . . . . . . . . 68

OOperating conditions . . . . . . . . . . 68Overview . . . . . . . . . . . . . . . . . . 19Owner . . . . . . . . . . . . . . . . . . . . 16

PPackaging . . . . . . . . . . . . . . . . . . 21Parts replacement . . . . . . . . . . . . 53Plug connection . . . . . . . . . . . . . . 34Plug connector

EN175301-803 . . . . . . . . . . . . 31

Precautionsgeneral . . . . . . . . . . . . . . . . . 11

PreparationDevice . . . . . . . . . . . . . . . . . . 26

RRead-off . . . . . . . . . . . . . . . . . . . 41Replacement parts . . . . . . . . . 15, 71Return Materials Authorization . . . . 61

SSafety

disassembly . . . . . . . . . . . . . . 61

Safety equipment . . . . . . . . . . 14, 15

Safety instructionstransport . . . . . . . . . . . . . . . . 21

Sealant . . . . . . . . . . . . . . . . . . . . 73Service . . . . . . . . . . . . . . . . . . . . . 7Special tools . . . . . . . . . . . . . . . . 73Storage . . . . . . . . . . . . . . . . . . . 22Strainer . . . . . . . . . . . . . . . . . . . 26Switch contact

replacement . . . . . . . . . . . . . . 57

Switch contact rating plate . . . . . . 63Switch point . . . . . . . . . . . . . . . . 39Switch point adjustment scale . . . . 20Symbols

packaging . . . . . . . . . . . . . . . 22

Symbols usedin the instructions . . . . . . . . . . . 8

TTechnical data

General specifications . . . . . . . 65

Tightening torque of screws . . . . . 70Tools . . . . . . . . . . . . . . . . . . . . . 73Transport inspection . . . . . . . . . . . 21

UUnimpeded flow section . . . . . . . . 25

WWarranty and guarantee provisions . 7

Index


RVM/U-L4 Module BASICS Flow Monitor..."RVM/U-L4 Module ATEX ". Any additional or different...

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