Manuals / Conair / Kitchen Appliance / Refrigerator

Conair MPW Troubleshooting, Before beginning A few words of caution How to identify the cause

Models: MPW MPA

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TROUBLESHOOTING

●Before beginning . . . . . . . . . . . .6-2

●A few words of caution . . . . . . .6-2

●How to identify the cause

of a problem . . . . . . . . . . . . . . .6-3

DIAGNOSTICS

●Shut down alarms . . . . . . . . . . .6-4

●Warning alarms . . . . . . . . . . . .6-10

●System alarms . . . . . . . . . . . . .6-11

●Chiller will not power up . . . . .6-12

REPAIR

●Checking and replacing fuses .6-13

●Resetting overloads . . . . . . . . .6-14

●Replacing the pump overload .6-14

●Replacing the motherboard . . .6-15

●Replacing the compressor contactor . . . . . . . . . . . . . . . .6-16

●Checking the unloader valve . .6-17

●Replacing the freezestat . . . . .6-18

UGH009/0999

microKool Portable Chillers

6-1

Page 57

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Conair MPW, MPA manual Troubleshooting, Before beginning A few words of caution How to identify the cause, of a problem

Contents

Page Date Manual Number UGH004/0999 Serial numbers Model numbers MAINTENANCE INSTALLATIONTABLE OF CONTENTS INTRODUCTIONTROUBLESHOOTING MAINTENANCE . . . . . . . . . . . . . . .continuedPARTS/DIAGRAMS DIAGNOSTICSPurpose of the User Guide How the guide is organized INTRODUCTIONYour 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 READ THIS SO NO ONE GETS HURT WARNING Electrical shock hazardPage Water-cooled models How it works Air-cooled models Features What is the microKool chiller? Typical applications How it worksSpecifications Water-cooled Specifications Air-cooled DESCRIPTIONWHAT IS THE MICROKOOL CHILLER?TYPICAL APPLICATIONS HOW IT WORKS WATER COOLED Typical air-cooled plumbing diagram HOW IT WORKS AIR COOLEDHigh Efficiency Compressors FEATURESMolded Plastic Reservoirs Water ConnectionsDimensions inches mm SPECIFICATIONS MPW WATER COOLEDWeight lb kg SPECIFICATION NOTESPerformance characteristics SPECIFICATIONS MPA AIR COOLEDDimensions inches mm SPECIFICATION NOTESFreezing Points of Aqueous Ethylene Glycol Solutions Freeze Protection Requirements by Unit Set Temperatureto Process Set Temperature, degrees F Ethylene Glycol, % by weightUnpacking the boxes Preparing for installation INSTALLATIONConnecting the water supply Connecting the main power Testing the installation Entering setpoint deviation parametersYou are now ready to begin installation UNPACKING THEBOXES Make sure the installation area provides PREPARING FOR INSTALLATIONInstall plumbing for process and cooling lines 1 Position the chiller as close to the process machine as possible2 Install pipe to the rear of the chiller CONNECTING PROCESS AND WATER SUPPLY LINESTools for installation 1 Remove the shipping pipe plug from the female4 Connect the power wires to the terminals CONNECTING THE MAIN POWER SUPPLYIMPORTANT! Before initiating power to the unit 1 Open the unit’s electrical enclosureshould perform this procedure TESTING THE INSTALLATIONApply power to the unit Replace the access panelENTERING SETPOINT DEVIATION PARAMETERS INITIAL SETUP Dip switch ConfigurationWARNING Electric shock hazard Disconnect and lock out main power to the CHANGING TEMPERATURE UNITSChange Dip Switch 1 to Open the electrical enclosureSet dip switch 3 to ON Disconnect and lock out main power to the unitand switches 5 and Close the electrical enclosure and restoreClose the electrical enclosure and restore power to the unit Set dip switch 3 to OFFPress the RUN button to save the passcode Open the electricalDisconnect and lockout power to the unit SELECTING THE TEMPERATURE CONTROL POINTSet dip switches 3 and Set dip switch 5 to theSELECTING THE TEMPERATURE CONTROL POINT Press the RUN button to save the control pointINSTALLATION the main power supply4 Insert the two power leads from the device INSTALLING THE AUTO START FEATURE3-14 IMPORTANT AlwaysINSTALLING THE FEATURE6 Set dip switch 4 to the ON position When Auto Start is enabledACTIVATING SPI COMMUNICATION 2 Apply power to the chiller 3 Enter the passcode, if necessary3-16 1 Connect the host machine to the chillerStarting the chiller Stopping the chiller Using the PC-2 pumpdown PC-1 control features PC-2 control featuresOPERATION Positioning the control panel Entering a passcodeAlarm PC-1 CONTROL FEATURESSetpoint adjustment buttons Setpoint displayPumpdown On/Off PC-2 CONTROL FEATURESSetpoint adjustment buttons AlarmTo raise and swivel the control panel POSITIONING 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 2 Make sure the chiller tank is full of fluid STARTING THE CHILLER3 Turn on the water supply to the chiller MPW 4 Enter the passcodeSTOPPING THE CHILLER USING THE PUMPDOWN FEATURETo shut down the unit 1 Press Stop Press the4 Restore power to the unit Enable Auto TuneDisconnect and lock out main power to the unit PERFORMING AN AUTO TUNEb a d PERFORMING AN AUTO TUNEInsufficient setpoint/process deviation Invalid PID constants were generatedPage Maintenance schedule Cleaning evaporators Cleaning condensers MAINTENANCEoutput monitors Calibrating temperature sensors Filling the tank Checking refrigerant charge Performing system tests5-2 MAINTENANCE PREVENTATIVE MAINTENANCE SCHEDULEQuarterly every 3 months Annually every 12 monthsPREVENTATIVE MAINTENANCE SCHEDULE CLEANING CONDENSERS CLEANING EVAPORATORSTo 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 If the charge is low, recharge the system CHECKING REFRIGERANT CHARGESet dip switch 6 to ON Set dip switches 3 andPERFORMING SYSTEM TESTS then open the electrical enclosureKEY/DISPLAY TEST Enable Test ModePress any key Press any key to clear all displaysConnect all inputs to the system INPUT TESTPress any key to display the first test menus Select the Input Test menu5-10 OUTPUT TESTConnect all outputs to the system Select the Output Test menuDISABLING OR ENABLING OUTPUT MONITORS Select the OM Enable/Disable menuPress the Setpoint to select the next output Save changes and exit the output menu1 Enable Test Mode CALIBRATING TEMPERATURE SENSORS5-12 Release the Setpoint key7 Wait until the control displays “don” or “bad.” 6 Press the up key to begin calibratingPress Select 9 Exit Calibration Mode5-14 LOGGING OPERATING HOURSIndex through test menus to the operating log Exit the Operating Hours LogBefore beginning A few words of caution How to identify the cause TROUBLESHOOTINGof a problem Shut down alarms Warning alarms System alarmsFind the wiring, plumbing and other diagrams Before you begin troubleshootingIf an alarm is present, note any indicator lights BEFORE BEGINNINGTHE CAUSE OF A PROBLEM HOW TO IDENTIFYA problem can trigger three types of alarms When an Alarm condition occursSHUT DOWN ALARMS Possible cause SolutionAlarm Hi SAFPossible cause Solution Lo SAFSHUT DOWN ALARMS AlarmPossible cause Solution PHS ErrSHUT DOWN ALARMS AlarmSHUT DOWN ALARMS Possible cause SolutionAlarm Is the overload faulty or set incorrectly?Possible cause Solution SHUT DOWN ALARMSAlarm Refrigerant pressure is either too low or too highPossible cause Solution SHUT DOWN ALARMSAlarm GPM=2.4 x chiller ton capacityWARNING ALARMS Possible cause SolutionAlarm Solution SYSTEM ALARMSCause ERR ERRSymptom CHILLER WILL NOT POWER UP6-12 Possible cause SolutionCHECKING AND REPLACING FUSES Disconnect and lockout the main powerTo replace a blown fuse If fuses continue to fail1 Disconnect and lockout the main power RESETTING OVERLOADSDisconnect auxiliary wiring on the overload module Set the module reset mode to M for manual9 Reconnect the terminal blocks and wires to the new board Disconnect and lockout the main power supplySet dip switches 7 and 8 to the correct unit type REPLACING THE MOTHERBOARDDisconnect the wires from the compressor con Reverse this procedure to install the new conREPLACING THE COMPRESSOR CONTACTOR 6-16CHECKING THE UNLOADER VALVE 1 Clear any alarms and restart the chiller 2 Watch for the followingDisconnect freezestat unit wires from their ter Disconnect and lockout the power supplyReverse the process to install the new unit. Be REPLACING THE FREEZESTATWE’RE HERE TO HELP HOW TO CONTACT CUSTOMER SERVICEBEFORE YOU From outside the United States, callAPPENDIX A-2 EQUIPMENT GUARANTEE PERFORMANCE WARRANTY WARRANTY LIMITATIONSSPI COMMANDS SUPPORTED BY THE CONAIR MICROKOOL SPI Command PairsAPPENDIX B-1 Status, Process SPI STATUS WORDSAPPENDIX B-2 CHILLER SPI COMMANDSAPPENDIX B-3 Status, MachineCHILLER SPI COMMANDS SPI STATUS WORDSCHILLER SPI COMMANDS APPENDIX B-4SPI STATUS WORDS Status, MachinePC-1 Wiring Diagram . . . . . . . .PD-2 PARTS/DIAGRAMSPC-2 Wiring Diagram . . . . . . . .PD-4 Parts Lists . . . . . . . . . . . . . . . .PD-6PD-2 PC-1 WIRING DIAGRAMUGH004/0999 PC-1 CIRCUIT BOARD PD-3PC-1 CIRCUIT BOARD JUMPERPD-4 PC-2 WIRING DIAGRAMUGH004/0999 PC-2 CIRCUIT BOARD PD-5PC-2 CIRCUIT BOARD JUMPER