阿法拉伐分油机故障处理

EcoStream Oily Water Cleaning System Alarms and Fault FindingPrinted Book No.Jan 2008 585964-02 V2Alfa Laval reserves the right to make changes at any time without prior notice.Any comments regarding possible errors and omissions or suggestions for improvement of this publication would be gratefully appreciated.Copies of this publication can be ordered from your localAlfa Laval company.Published by:Alfa Laval Tumba ABMarine & Diesel EquipmentSE - 147 80 T umbaSweden© Copyright Alfa Laval Tumba AB 2008.Contents585964-021 Alarms (2)1.1Alarm Functions .................................................................................................21.2Reading Alarm History List .............................................................................21.2.1Alarm message explanation:....................................................................................31.3Alarm Reset .........................................................................................................31.4Abnormalities not displayed (4)2 Display Alarms and Actions ...........................................................................53 Alarm Tests ............................................................................................................194 Separator Faults .. (21)4.1Separation Problems .......................................................................................214.2Mechanical Problems (22)5 O il-in-Water Monitor ..........................................................................................256 Feed Pump ...............................................................................................................277 Constant Pressure Modulating Valve ...................................................298 Videographic Recorder (optional).. (31)1Alarms1.1 Alarm FunctionsThe alarm system is designed to ensure a safe separation system.All alarms are shown on the operator panel display, and most of them are complemented bylight emitting diodes (LEDs).The alarms are displayed in order of occurrence. 1.2 Reading Alarm HistoryListTo read the stored list of alarms, do as follows:•Push ‘Enter’.•Push ‘+’ until ‘End’ is shown on the display.•Push ‘Enter’ and ‘+’ at the same time.•Push ‘+’ repeatedly until ‘AL list’ shows on the display.•Push ‘Enter’.•Go through the list using the ‘+’ pushbutton until ‘End’ shows on the display.•Push ‘Enter’.•Push ‘+’ repeatedly until ‘Exit’ shows on the display.•Push ‘Enter’ to return to normal display.N O T EThe texts ‘Alcap Pr4 = On/ Standby’, and ‘DischargeRepeated’ are reminders to the operator, and notalarms.2585964-02585964-0231.2.1 Alarm message explanation:1.3 Alarm ResetW A R NI N G!Breakdown hazardNever reset an alarm without first finding and remedying the cause.It is possible to reset the system withoutremedying the cause, but the alarm signal will be repeated.N O T EThe STOP sequence is automatically initiated if an alarm is not remedied within 30 minutes.The display shows:Alarm no. 5Alarm number0:13This alarm occured 13 minutes ago.Feed pressure low Type of alarmP1 60Parameter Pr 1 was set to 60 minutes.00:02:13The alarm was reset after 2 minutes 13 seconds.G 001648AG 001649A4585964-02C A U T IO N!Risk of injuryNever return to the operator panel to acknowledge or reset an alarm if doing so is by any means hazardous.1.4 Abnormalities notdisplayedThere are some abnormalities not shown on the display . Below are listed the most common:Smell•Normal occurrence during start while the friction blocks are slipping.None.•Oil level in oil sump too low.Check oil level and add oil if necessary.Noise•Height position of paring disc is incorrect.Stop the separator, measure and adjust the height.•Bearing(s) damaged or worn.Renew all bearings.•Improper bowl assemblyCheck and reassemble.Unsatisfactory separation result•Incorrect separation temperature.Adjust.•Throughput too high.Adjust.•Disc stack is clogged.Clean disc stack.•Disc inlet cloggedClean disc inlet•Sludge space in bowl is filled.Clean and reduce the time between sludge discharges.•Oil in Water Monitor dirty Clean Oily Water Monitor•Bowl speed too low.Examine the motor and power transmission for correct frequency parts.Check belt and coupling pads.•Bowl rotates in wrong directionCheck the electrical connections to the motor.Why?What to do585964-025ECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDING 2 DISPLAY ALARMS AND ACTIONS2Display Alarms and Actions171112131717169111314139101517177817on page1317161515151713161313141315171314161717on page2 DISPLAY ALARMS AND ACTIONS ECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDINGon page101117813136585964-02585964-027ECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDING 2 DISPLAY ALARMS AND ACTIONSW A R NI N G!Disintegration hazardsIf excessive vibration occurs, stop separator and keep bowl filled with liquid during rundown.The cause of the vibration must be identified and corrected before the separator is restarted.•Sludge remaining in part of the bowlDismantle, clean and check the bowl before restart. See Service Manual.W A R NI N G!Disintegration hazardThe separator bowl must be manually cleaned before starting up again.•Bowl wrongly mounted•Disc stack compression incorrect •Bowl assembled with parts from other separators Check assembly. See ServiceManual.•Height position of paring disc is incorrect. Stop the separator, measure and if necessary adjust the height.•Bowl spindle bent.Renew the bowl spindle.•Bearing(s) damaged or worn.Renew all bearings.•The frame feet are worn out.Renew the frame feet.•Spindle top bearing spring broken.Renew all springs.Why?What to do2 DISPLAY ALARMS AND ACTIONS ECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDING8585964-02• Sludge remaining in part of the bowlDismantle, clean and check the bowl before restart.W A R NI N G!Disintegration hazardThe separator bowl must be manually cleaned before starting up again.•Bowl wrongly mounted•Disc stack compression incorrect •Bowl assembled with parts from other separators Check assembly. See ServiceManual.•Height position of paring disc is incorrect. Stop the separator, measure and if necessary adjust the height.•Bowl spindle bent.Renew the bowl spindle.•Bearing(s) damaged or worn.Renew all bearings.•The frame feet are worn out.Renew the frame feet.•Spindle top bearing spring broken.Renew all springs.•Sensor or cable damagedReplace sensor. If no spare sensor available, set parameter Fa 16 = 0.0 to be able to run the system. Note that it is not possible to run in AUTO mode.Why?What to do•Emergency button pushed Remedy cause for pushing button.Reset pushbutton.•Steam supply valve faulty Investigate cause and remedy.•Faulty triac module(s) in the power unit or faulty controller in the control unit (electric heater).If relay K11 is on:Disconnect X12:10.If the temperature is falling, replace the control module in the control unit.If the temperature is not falling, replace the triac module(s).If relay K11 is off, but contactorK12, K16, or K17 is on, and the temperature is not falling:Check if power is supplied from the control unit to the contactor which is on (X12:6 – X12:12, X12:7 – X12:12, X12:9 – X12:12). If it is, replace the control module in the control unit.•Broken wiring or defective heater resistance, or faulty controller in the control unit.Check adjustment of P and I functions in the control unit.If contactor sequence correct:Check wiring and heater resistance of each block or heater element. See EHM heater component booklet.If contactor sequence not correct:Replace the control module in the control unit.Why?What to do•Heater clogged•Steam supply insufficient•Steam trap faulty•Steam supply valve faultyInvestigate cause and remedy.•Faulty fuses or burned contactors(electric heater)Check and renew broken fuses. Reset overcurrent protection (applicable for 8/7 – 24/22 kW power unit).Check wiring and contactor coils.•Broken wiring or defective heater resistance(electric heater)Check wiring and heater resistance of each block or heater element. See the Service Manual booklet.•Short circuit / broken sensor or cable. Disconnect cable at sensor. Measure resistance between 1-3. Resistance shall be within 100-142 ohms = 0-110 C / 32-230 F.Test of EPC 50 input: •Disconnect cables from sensor, (terminal X 5:1-2-3).•Move jumpers Xj1 and Xj2 upwards - from Normal to Test.(The jumpers can be found inthe upper left corner of the I/OBoard)•Indication within 50-60 C when OK.•If no spare sensor available set parameter Pr 16 = 0, or if control sensor free, move connectionto that one.Why?What to do•Short circuit / broken sensor or cable.Disconnect cable at sensor.Measure resistance between 1-3. Resistance shall be within 100-142 ohms = 0-110 C / 32-230 F. If no spare sensor available setparameter Pr 18 = 0. Heater is then out of function.•Pump not working•Pressure in feed line too lowCheck pump.Check feed line.•High power (net) frequency Check power supply before restart.•Incorrect transmission parts (50 Hz belt pulley and belt for 60 Hz power supply).W A R NI N G!Disintegration hazardStop and change the belt transmission to suit the power supply frequency.Why?What to do•Slipping belt Change belt.•Worn coupling pads Check / change pads.•Bowl not properly closedCheck closing water supply (valve SV 16).Check bowl operating system for leakage.Check nozzle.•Bowl not properly assembled Check that the lock ring is in place.•Low power net frequency Check power.•Motor failure.Repair the motor.•Bearing(s) damaged.Renew all bearings.•Incorrect transmission parts (60 Hz belt pulley and belt for 50 Hz power supply).W A R NI N G!Disintegration hazardStop and change the belt transmission to suit the power supply frequency.Bowl opens unintentionally during operation because:•Strainer in the operating water supply is clogged.Clean the strainer.•No water in the operating water system.Check the operating water system and make sure any supply valves are open.•Hoses between the supply valves and separator are incorrectly fitted.Fit correctly.•Nozzle in bowl body clogged Clean the nozzle.•Rectangular ring in discharge slide is defective.Renew the rectangular ring. •Valve plugs are defective.Renew all plugs. •Supply valve SV15 for opening water is leaking.Rectify the leak.Why?What to do•Sensor or cable damaged Replace sensor. If no spare sensoravailable set parameter In 6 = Noto be able to run the system. Notethat it is not possible to run inAUTO mode.•Feedback signal from contactor K 2 missing Check the contactor function. Input terminalX 6:5 in EPC 50.•Bowl periphery sealing damaged Change seal ring in bowl hood.Check/change rubber rings and valve plugs.•Leakage somewhere in oil outlet Check for leakage.•Closing water leaking Check/change sealings and plugs. •Pump has not drained the tank Check the pump function.• A code has been set to makeparameter changes not possibleUnlock the code.•Wrong IP address used inIn 27-30Check the setting.•Constant Pressure Valve notoperating correctlyCheck Constant Pressure Valve.Check any other restriction.•Constant Pressure Valve notoperating correctlyCheck Constant Pressure Valve.Check any other restriction.•Sensor or cable damaged Check cable connectionsReplace sensor. If no spare sensoravailable set parameter Pr 12=0.0to be able to run the system.•Sensor or cable damaged Check cable connectionsReplace sensor. If no spare sensoravailable set parameter Pr 14=0.0to be able to run the system.•Pipe restricted Check recirculation for restriction.Check heater for fouling.•Pipe restricted Check recirculation for restriction.Check heater for fouling.Why?What to do•Low flow Check pump and flow regulation.Clean strainer.Check pump.•Low flow Check pump and flow regulation.Clean strainer.Check pump.•Feedback signal from contactor K 3 missing Check the contactor function.Check input terminal X 9:1 in the EPC.•Low feed pressure during recirculation Introduce a restriction in the recirculation line to keep feed pressure above alarm level.Why?What to do•Depends on use of the input Depends on use of the input •Separator coupling slipping Check the coupling.•Belt slipping Check the belt.•Height position of paring disc isincorrect.Stop. Check and adjust the height.•Motor failure Repair the motor.•Bearing(s) damaged or worn.Renew all bearings.•Separator start button notpushed.Push start button.•0V in cable heater X 12:3 to EPC50 X 51:4(electric heater)Check the power supply to the heater.•High temp. switch released (electric heater)Check temp. setpoint in the control unit.Check the heater and clean if necessary.Reset temp. switch in power unit. Restart heater.•High oil content Check the dirty water quality.Raise temperature.Lower feed rate.If available, dose chemicals.•Fouling in the monitor Dismantle and clean withdetergent. (See Oil in Monitorinstructions.)•T oo much air in water outlet Check water back pressure(about 5.5 bar).•Flow Switch alarm due to no sample flow through Oil in Water Monitor Ensure that there is flow through Oil in Water Monitor•Flow Switch malfunction Change Flow Switch •Safety Box open(if applicable)Close Safety Box•Oil Monitor internal error Restart the systemWhy?What to doSpeed not decreased as dischargefeedback (below Fa12) caused by:•Strainer in the operating watersupply is clogged.Clean the strainer.•Water flow too low.Check opening water.Valve SV 15 flow = 11 l/min.Valve SV 16 flow = 5.5 l/min •Hoses between the supplyvalves and separator areincorrectly fitted.Correct.•Rectangular ring in the operatingslide is defective.Renew the rectangular ring. •Attempt to operate remote OP Not legal when local OP is active.•Black-out has occurred with EPC in operation Check plant conditions and restart.•Alarms comes at standstill after emergency or vibration shutdown Investigate the cause for the stop and switch the power off and then on to the EPC 50.Why?What to do•If parameters are changed automatically by "thunderstorm"type influence, alarm is given to indicate out of range.Switch EPC50 power off. Move X J4 on I/O board to position right. Switch power on. Parameters are now all set to default values. Move X J4 back to original position. Adjust all parameter settings to correct value.Switch power off and on again.•X71:2 and X71:3 are both set to0 or both set to 1Set X71:2 to X41 and jumper between X71:3 and X40•T ransducer board, operator panel board, or I/O board in EPC not working Check cables to board or replace the board (see Change of Circuit Board in the Service Manual booklet).•Bad connection Check connection•Board faulty Replace the board•Cable errors Check cables to board or replacethe board (see Change of CircuitBoard in the Service Manualbooklet).•Optional heater board in EPC not working Check cables to board or replace the board (see Change of Circuit Board in the Service Manual booklet).•Optional vibration board in EPC not working Check cables to board or replace the board (see Change of Circuit Board in the Service Manual booklet).•System cross-connection heatercommunication errorCheck parameters and cable.•If Pr 25=0 the high level alarm is disabled The alarms comes as warning to operator.•If Pr 5 is used, the text in Pr 6 is displayed Take action according to what the text means (plant dependant).•Insufficient heating during start(Ti 53)Check heater function.•Heating on during stop sequence Check heater function.•Recirculating oil not cooling Reset alarm to continue.Why?What to doECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDING 3 ALARM TESTS 3Alarm TestsN O T EIf any parameter value is changed to activate analarm, do not forget to reset to the original valuebefore operation.Alarm message Reddiode Sequence Method TerminalReactionStandard functionsBowl speed sensor - ERROR Standst.Start separator with sensordisconnected.X6:1POWER FAILURE Start Switch power off / on duringoperationFeed pressure PT1 - HIGH PT1Start Decrease limit (Pr14)Feed pressure PT1 - LOW PT1Start Increase limit (Pr15)Feed pressure sensor PT1 -ERRORPT1Start Disconnect sensor X5:4Pump starter - FAILURE Pump Start Switch pump offOil feed - TEMPERA TURE HIGH TT Start Decrease limit (Pr16/Pr19)V1 off.Heating off. Oil feed - TEMPERA TURE LOW TT Start Increase limit (Pr17/Pr20) ordecrease Ti 53.V1 offT emperature alarm sensor - ERROR TT Start Disconnect sensor X5:2V1 offHeating off.Bowl speed - HIGH Separation Decrease limit (Fa10)Stopsequence.Bowl speed - LOW Separation Increase limit (Fa11)Stopsequence.3 ALARM TESTS ECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDINGPressure in water outlet PT5 - HIGH PT5Separation Reduce Constant PressureValve pressure.Pressure in water outlet PT5 - LOW PT5Separation Increase Constant PressureValve pressure.Water pressure sensor PT5 -ERRORPT5Separation Disconnect sensor X5:8Oil in Water Monitor - ALARM OWT Separation Decrease limit (Fa23)V5.3 Changeto recirculation.HIGH OIL CONTENT IN WATER Separation Add much water to the feedand wait for 5 drainingactions. Discharge. Afteranother 5 drainings alarm isgiven.V1 offDischarge feedback - ERROR Discharge Disconnect SV15X8:5 A secondattempt todischarge willtake placebefore alarmand stop.Emergency stop - BUTTON PUSHED Separation Push the button Sep.motor off,heater off, feedon for max.3minutes. Feedstops whenpressurereaches Pr11.Optional functionsTemperature control sensor -ERRORTT Start Disconnect X51:3Heater - FAULT Heater Start Disconnect X51:4Sludge tank level - HIGH Tank Start Disconnect X201Separator run-up - TOO LONG Start Decrease Ti 52 to 1. Startthe separator.Sep. motor off.Temperature increase - TOO SLOW TT Start Start separator and EPC butnot heater, or start systemwith Ti 53 set to 1.Alarm message Reddiode Sequence Method TerminalReactionECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDING 4 SEPARATOR FAULTS 4Separator Faults4.1 Separation ProblemsCause RemedyA. Liquid flows out through bowl casing drain and / or sludge outletSee also B, belowSludge discharge in progress None (normal)O-ring at paring chamber defective RenewBowl hood seal ring defective or sealing surface of sliding bowl bottom damaged Replace seal ring. Smooth surface on sliding bowl bottom or renew the latterBowl speed too low Make sure current is on and brake is off, check tension,examine motor and power transmissionValve (s) in heavy phase outlet line closed CheckHeavy phase paring disc defective RenewB. Bowl opens unintentionally during operationSee also A, aboveStrainer in operating water system clogged CleanInsufficient supply of makeup water RemedySmall nozzles in bowl body clogged CleanSmall nozzle in operating water ring clogged CleanSquare ring in sliding bowl bottom defective RenewValve plugs defective RenewSludge deposits on operating slide CleanC.Bowl fails to open for sludge dischargeStrainer in operating water system clogged Clean the strainerWater flow too low Check water flow.Insufficient supply of discharge water RemedySmall nozzles in bowl body clogged CleanSeal ring in operating slide defective RenewD.Unsatisfactory sludge dischargeT oo long discharge interval Clean and shorten time between dischargeSludge deposits in operating system CleanE.Unsatisfactory separation resultIncorrect throughput AdjustBowl disc stack clogged CleanSludge space in bowl filled Clean and shorten time between dischargesBowl speed too low Make sure brake is off, check belt tension, examine motorand power transmission4 SEPARATOR FAULTS ECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDING 4.2 Mechanical ProblemsCause RemedyA.Separator vibrates during starting sequenceNote! Some vibration is normal during the starting sequence when the separator passes its critical speeds.Bowl out of balance due to:bad cleaningincorrect assemblypoor tightening of lock ringbowl assembled with parts from different separators too few discs in disc stack Stop immediately by pressing emergency stop push-button or switching off power. Establish cause.Incorrectly tightened lock ring can involve fatal danger Replace discs removedUneven sludge deposits in sludge space CleanHeight position of paring disc or bowl spindle is incorrect Stop, check and adjustBowl spindle bent, (max 0,04 mm)RenewB.Separator vibrates during running sequenceUneven sludge deposits in sludge space CleanBearings damaged or worn RenewVibration-dampers worn Renew dampers every three years Spindle top bearing spring broken Renew all springsC.SmellNormal occurrence during start due to friction blockslippageNoneBrake applied ReleaseD.NoiseHeight position of paring discs or bowl spindle is incorrect Stop, check and adjustBearings damaged or worn RenewBelt is slipping Tighten beltE.Speed too highIncorrect transmission parts (50 Hz belt pulley for 60 Hz current).Stop immediately and rectify faults. Check frequency of power supply (50 Hz / 60 Hz).In case of overspeeding, check bowl for possible deformation. Contact your local Alfa Laval representative.F.Speed too lowBrake applied ReleaseFriction pads worn or oily Renew or clean Bowl not closing or leaking Dismantle and check Motor failure RepairBearings damaged or worn RenewBearings overheated RenewDrive belt incorrectly tightened AdjustG.Starting power too lowDrive belt incorrectly tightened AdjustIncorrect (belt pulley) transmission AdjustECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDING 4 SEPARATOR FAULTSCause RemedyH.Starting time too longBrake applied ReleaseFriction pads worn or oily Renew or cleanHeight position of paring discs or bowl spindle incorrect Stop, check and adjustMotor failure RepairBearings damaged or worn RenewI.Starting power too highIncorrect belt pulley Stop immediately. See paragraph EOpposite direction of rotation Switch electrical phasesJ.Stopping time too longBrake lining worn or oily Renew or cleanK Water in drive housingBowl casing drain obstructed Clean and change oilLeakage at top bearing Renew seal ring and change oilCondensation Change oil4 SEPARATOR FAULTS ECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDINGECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDING 5 OIL-IN-WATER MONITOR 5Oil-in-Water MonitorThe Oil-in-Water monitor will indicate severalmalfunctions in the status line of the display.Pressing the “OK” button will lead to aninformation window, similar to the items listedin the table below.Status Reading System-Alarm-circuit Alarm-circuit 1,2Reason ServicingLED AlarmOK0..49Green /Blinking No NormaloperationNormal operation-OK EE Green /Blinking No Alarm Sample reading isout of range:Oil content toohigh, dirty sampletubeWait until oilcontent is withinthe range,Clean sampletube .FW !0..49 / EE Green /Blinking No Alarm Freshwater isenabled-Sample? EE Red /Steady Y es Alarm Meter is not ableto measure thesample:no water in, oilcontent much toohigh, no lighttransmissionpossible.Check sample,clean sampletube.Com?EE Red /Steady Y es Alarm Nocommunicationbetweencomputer unit andmeasuring cell.Check connectionbetweencomputer unit andmeasuring cell.Datalog? 0..49 / EE Red /Steady Y es Alarm Datalogging is notpossible:no DECKMA cardin.Insert the activememory card.:Datalogging is notpossible:a read only cardis in.Insert the active memory card.Datalogging is not possible:a new DECKMA card is card in.Activate card or insert the active memory card.Int.Err Red /Steady Y es Alarm Internal error Restart thesystem.5 OIL-IN-WATER MONITOR ECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDINGECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDING 6 FEED PUMP 6Feed PumpFault Probable cause RemedyLow capacity or low pressure Suction valve(s) closed or suctionstrainer clogged Open suction valve(s)/clean strainerWrong direction of rotation Change phase order (switch two of thethree motor connections)Shaft seal leaking Tighten shaft sealPump stator worn ReplacePressure relief valve open Adjust the pressure relief valveAir leakage on pump suction side Seal off the air leakageForeign object(s) trapped in the pump Dismantle the pump and remove theforeign object(s)Pump does not prime No water supply to the priming watersolenoid valveOpen water supply valve(s)Malfunction of the priming watersolenoid valveCheck and replace broken part(s)Air leakage on pump suction side Seal off the air leakageWrong direction of rotation Change phase order (switch two of thethree motor connections)Suction height too high Reinstall the pump to a suction heightmeeting NPSHrPump noisy when running Heavy wear in the pump Dismantle the pump and replace wornpartsSuction valve(s) closed or suctionstrainer cloggedOpen suction valve(s)/clean strainerPump and motor not properly aligned Align the pump and motorShaft coupling worn Check the coupling and replace wornpartsSuction height too high Reinstall the pump to a suction heightmeeting NPSHrAir leakage on pump suction side Seal off the air leakageDrive motor stops by tripping the overload relay Counter pressure too high Check shut-off valve(s) in dischargelineCut-off setting of the motor relay set toolowAdjust the relay setting in accordancewith motor rating in Ampere6 FEED PUMP ECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDINGECOSTREAM OILY WATER CLEANING SYSTEM ALARMS AND FAULT FINDING7 CONSTANT PRESSURE MODULATING VALVE 7Constant Pressure Modulating ValveN O T EStudy the maintenance instructions carefully beforereplacing worn parts.Fault Probable cause RemedyThe valve does not maintain thepreset pressure- Faulty diaphragm Replace the diaphragm- Guide (9) seizes Lubricate the guide- Incorrect operating range Check the pressure drop over the valve and check the flow rate- The available air pressure is lower than the product pressure Increase the air pressure eg. by using a Booster- The air pressure is notcorrectly adjustedReadjust the air pressure- Faulty air pressure regulating valve or incorrect type Repair the valve or check that it is pressure compensatingProduct leakage-Worn diaphragm- Product affecteddiaphragmReplace the diaphragmAir leakage-Worn O-ring- Replace the O-ring-Worn diaphragm (10)-Replace the diaphragm-Worn and hard diaphragm (10)- Replace by a diaphragm of a different grade for higher temperatureValve plug moving too fast up and down (unstable)Pressure pulsationsbecause of fast changesin process conditionsUse an air throttling valve(optional extra between the airpressure regulating valve andthe CPM-2 valve.。