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Conair MPA, MPW manual Checking Refrigerant Charge, If the charge is low, recharge the system

Models: MPW MPA

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CHECKING

REFRIGERANT

CHARGE

All chillers are fully charged with refrigerant at the factory. Your chiller mode’s nameplate identifies the type and amount of total refrigerant charge required.

1 While the unit is running, check the refriger- ant charge through the sight glass located between the evaporator and the condenser. Use a flash- light to look at the liquid-line sight glass.

◆Under full-load conditions, the sight glass should be clear.

◆Under low-load conditions, when the hot-gas bypass valves are operating, bubbles may be visible in the sight glass. This is normal.

If the charge is low, recharge the system.

Contact a certified refrigerant technician to recharge or replace refrigerant. This procedure should be performed only be a qualified technician.

5-6

MAINTENANCE

microKool Portable Chillers

UGH004/0999

Page 48

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Conair MPA, MPW manual Checking Refrigerant Charge, If the charge is low, recharge the system

Contents

Page Date Manual Number UGH004/0999 Serial numbers Model numbers INSTALLATION MAINTENANCETABLE OF CONTENTS INTRODUCTIONMAINTENANCE . . . . . . . . . . . . . . .continued TROUBLESHOOTINGPARTS/DIAGRAMS DIAGNOSTICSINTRODUCTION Purpose of the User Guide How the guide is organizedYour responsibilities as a user ATTENTION Read this so no one gets hurtPURPOSE OF THE USER GUIDE HOW THE GUIDE IS ORGANIZEDYOUR RESPONSIBILITY AS A USER WARNING Electrical shock hazard READ THIS SO NO ONE GETS HURTPage What is the microKool chiller? Typical applications How it works Water-cooled models How it works Air-cooled models FeaturesSpecifications Water-cooled Specifications Air-cooled DESCRIPTIONWHAT IS THE MICROKOOL CHILLER?TYPICAL APPLICATIONS HOW IT WORKS WATER COOLED HOW IT WORKS AIR COOLED Typical air-cooled plumbing diagramFEATURES High Efficiency CompressorsMolded Plastic Reservoirs Water ConnectionsSPECIFICATIONS MPW WATER COOLED Dimensions inches mmWeight lb kg SPECIFICATION NOTESSPECIFICATIONS MPA AIR COOLED Performance characteristicsDimensions inches mm SPECIFICATION NOTESFreeze Protection Requirements by Unit Set Temperature Freezing Points of Aqueous Ethylene Glycol Solutionsto Process Set Temperature, degrees F Ethylene Glycol, % by weightINSTALLATION Unpacking the boxes Preparing for installationConnecting the water supply Connecting the main power Testing the installation Entering setpoint deviation parametersYou are now ready to begin installation UNPACKING THEBOXES PREPARING FOR INSTALLATION Make sure the installation area providesInstall plumbing for process and cooling lines 1 Position the chiller as close to the process machine as possibleCONNECTING PROCESS AND WATER SUPPLY LINES 2 Install pipe to the rear of the chillerTools for installation 1 Remove the shipping pipe plug from the femaleCONNECTING THE MAIN POWER SUPPLY 4 Connect the power wires to the terminalsIMPORTANT! Before initiating power to the unit 1 Open the unit’s electrical enclosureTESTING THE INSTALLATION should perform this procedureApply power to the unit Replace the access panelENTERING SETPOINT DEVIATION PARAMETERS INITIAL SETUP Dip switch ConfigurationWARNING Electric shock hazard CHANGING TEMPERATURE UNITS Disconnect and lock out main power to theChange Dip Switch 1 to Open the electrical enclosureDisconnect and lock out main power to the unit Set dip switch 3 to ONand switches 5 and Close the electrical enclosure and restoreSet dip switch 3 to OFF Close the electrical enclosure and restore power to the unitPress the RUN button to save the passcode Open the electricalSELECTING THE TEMPERATURE CONTROL POINT Disconnect and lockout power to the unitSet dip switches 3 and Set dip switch 5 to thePress the RUN button to save the control point SELECTING THE TEMPERATURE CONTROL POINTINSTALLATION the main power supplyINSTALLING THE AUTO START FEATURE 4 Insert the two power leads from the device3-14 IMPORTANT AlwaysFEATURE INSTALLING THE6 Set dip switch 4 to the ON position When Auto Start is enabled2 Apply power to the chiller 3 Enter the passcode, if necessary ACTIVATING SPI COMMUNICATION3-16 1 Connect the host machine to the chillerPC-1 control features PC-2 control features Starting the chiller Stopping the chiller Using the PC-2 pumpdownOPERATION Positioning the control panel Entering a passcodePC-1 CONTROL FEATURES AlarmSetpoint adjustment buttons Setpoint displayPC-2 CONTROL FEATURES Pumpdown On/OffSetpoint adjustment buttons AlarmPOSITIONING THE CONTROL PANEL To raise and swivel the control panelTo lower the control panel To detach the PC-2 control panelENTERING A PASSCODE Press again to enter the passcodePress Setpoint to select the parameter you want to change STARTING THE CHILLER 2 Make sure the chiller tank is full of fluid3 Turn on the water supply to the chiller MPW 4 Enter the passcodeUSING THE PUMPDOWN FEATURE STOPPING THE CHILLERTo shut down the unit 1 Press Stop Press theEnable Auto Tune 4 Restore power to the unitDisconnect and lock out main power to the unit PERFORMING AN AUTO TUNEPERFORMING AN AUTO TUNE b a dInsufficient setpoint/process deviation Invalid PID constants were generatedPage MAINTENANCE Maintenance schedule Cleaning evaporators Cleaning condensersoutput monitors Calibrating temperature sensors Filling the tank Checking refrigerant charge Performing system testsPREVENTATIVE MAINTENANCE SCHEDULE 5-2 MAINTENANCEQuarterly every 3 months Annually every 12 monthsPREVENTATIVE MAINTENANCE SCHEDULE CLEANING EVAPORATORS CLEANING CONDENSERSTo clean the evaporator cleaning chemicalsREFILLING THE TANK Locate the fill port at 2 the back of the chillerDESCRIPTION section for information on glycol mix- tures CHECKING REFRIGERANT CHARGE If the charge is low, recharge the systemSet dip switches 3 and Set dip switch 6 to ONPERFORMING SYSTEM TESTS then open the electrical enclosureEnable Test Mode KEY/DISPLAY TESTPress any key Press any key to clear all displaysINPUT TEST Connect all inputs to the systemPress any key to display the first test menus Select the Input Test menuOUTPUT TEST 5-10Connect all outputs to the system Select the Output Test menuSelect the OM Enable/Disable menu DISABLING OR ENABLING OUTPUT MONITORSPress the Setpoint to select the next output Save changes and exit the output menuCALIBRATING TEMPERATURE SENSORS 1 Enable Test Mode5-12 Release the Setpoint key6 Press the up key to begin calibrating 7 Wait until the control displays “don” or “bad.”Press Select 9 Exit Calibration ModeLOGGING OPERATING HOURS 5-14Index through test menus to the operating log Exit the Operating Hours LogTROUBLESHOOTING Before beginning A few words of caution How to identify the causeof a problem Shut down alarms Warning alarms System alarmsBefore you begin troubleshooting Find the wiring, plumbing and other diagramsIf an alarm is present, note any indicator lights BEFORE BEGINNINGHOW TO IDENTIFY THE CAUSE OF A PROBLEMA problem can trigger three types of alarms When an Alarm condition occursPossible cause Solution SHUT DOWN ALARMSAlarm Hi SAFLo SAF Possible cause SolutionSHUT DOWN ALARMS AlarmPHS Err Possible cause SolutionSHUT DOWN ALARMS AlarmPossible cause Solution SHUT DOWN ALARMSAlarm Is the overload faulty or set incorrectly?SHUT DOWN ALARMS Possible cause SolutionAlarm Refrigerant pressure is either too low or too highSHUT DOWN ALARMS Possible cause SolutionAlarm GPM=2.4 x chiller ton capacityWARNING ALARMS Possible cause SolutionAlarm SYSTEM ALARMS SolutionCause ERR ERRCHILLER WILL NOT POWER UP Symptom6-12 Possible cause SolutionDisconnect and lockout the main power CHECKING AND REPLACING FUSESTo replace a blown fuse If fuses continue to failRESETTING OVERLOADS 1 Disconnect and lockout the main powerDisconnect auxiliary wiring on the overload module Set the module reset mode to M for manualDisconnect and lockout the main power supply 9 Reconnect the terminal blocks and wires to the new boardSet dip switches 7 and 8 to the correct unit type REPLACING THE MOTHERBOARDReverse this procedure to install the new con Disconnect the wires from the compressor conREPLACING THE COMPRESSOR CONTACTOR 6-161 Clear any alarms and restart the chiller 2 Watch for the following CHECKING THE UNLOADER VALVEDisconnect and lockout the power supply Disconnect freezestat unit wires from their terReverse the process to install the new unit. Be REPLACING THE FREEZESTATHOW TO CONTACT CUSTOMER SERVICE WE’RE HERE TO HELPBEFORE YOU From outside the United States, callEQUIPMENT GUARANTEE PERFORMANCE WARRANTY WARRANTY LIMITATIONS APPENDIX A-2SPI COMMANDS SUPPORTED BY THE CONAIR MICROKOOL SPI Command PairsAPPENDIX B-1 SPI STATUS WORDS Status, ProcessAPPENDIX B-2 CHILLER SPI COMMANDSStatus, Machine APPENDIX B-3CHILLER SPI COMMANDS SPI STATUS WORDSAPPENDIX B-4 CHILLER SPI COMMANDSSPI STATUS WORDS Status, MachinePARTS/DIAGRAMS PC-1 Wiring Diagram . . . . . . . .PD-2PC-2 Wiring Diagram . . . . . . . .PD-4 Parts Lists . . . . . . . . . . . . . . . .PD-6PD-2 PC-1 WIRING DIAGRAMUGH004/0999 PD-3 PC-1 CIRCUIT BOARDPC-1 CIRCUIT BOARD JUMPERPD-4 PC-2 WIRING DIAGRAMUGH004/0999 PD-5 PC-2 CIRCUIT BOARDPC-2 CIRCUIT BOARD JUMPER