Conair MPA, MPW manual Troubleshooting

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TABLE OF CONTENTS

MAINTENANCE . . . . . . . . . . . . . . .(continued)

Performing System Tests . . . . . . . . . . . . . . . . . . . . . . . . . .5-7

The Key/Display Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-8

Input Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-9

Output Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-10

Disabling and Enabling Outputs . . . . . . . . . . . . . . . . . . . .5-11

Calibrating Temperature Sensors . . . . . . . . . . . . . . . . . . .5-12

Logging Operating Hours . . . . . . . . . . . . . . . . . . . . . . . .5-13

TROUBLESHOOTING . . . . . . . . . . . . . . . .6-1

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 and Replacing Overloads . . . . . . . . . . . . . . . . .6-14 Replacing the Motherboard . . . . . . . . . . . . . . . . . . . . . . .6-15 Replacing the compressor contactor . . . . . . . . . . . . . . . . .6-16 Checking the unloader valve . . . . . . . . . . . . . . . . . . . . . .6-17 Replacing the freezestat . . . . . . . . . . . . . . . . . . . . . . . . . .6-18

APPENDIX

Customer Service Information . . . . . . . . . . . . . . . . . . . . . .A-1 Warranty/Guarantee Information . . . . . . . . . . . . . . . . . . . .A-2 microKool SPI commands . . . . . . . . . . . . . . . . . . . . . . . . .B-1

PARTS/DIAGRAMS

PC-1 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .PD-2

PC-1 Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PD-3

PC-2 Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . .PD-4

PC-2 Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . .PD-5

Parts Lists

ii

microKool Portable Chillers

UGH004/0999

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Contents Page Date Manual Number UGH004/0999 Serial numbers Model numbers Table of Contents IntroductionTroubleshooting Introduction HOW Guide is Organized Purpose User GuideYour Responsibility AS a User Read this SO no ONE Gets Hurt Page Description CHILLER? What is the MicrokoolTypical Applications HOW IT Works Water Cooled HOW IT Works AIR Cooled Features High Efficiency CompressorsSpecifications MPW Water Cooled Psi PressureSpecifications MPA AIR Cooled MPA-5Freezing Points of Aqueous Ethylene Glycol Solutions Freeze Protection RequirementsInstallation Boxes UnpackingMicroKool Portable Chillers come fully assembled Make sure the installation area provides Preparing for InstallationInstall plumbing for process and cooling lines Connecting Process Water Supply Lines Install pipe to the rear of the chillerRemove the shipping pipe plug from the female Coat the pipe threads with thread sealantConnecting Main Power Supply Open the unit’s electrical enclosureTesting the Installation Apply power to the unitTurn on the condenser water supply MPW Units and check for leaks. If any leaks appear, stopEntering Setpoint Deviation Parameters Initial Setup Dip switch ConfigurationChanging Temperature Units Open the electrical enclosure Change Dip Switch 1 toDisconnect and lock out main power to the unit Open the electrical enclosure Set dip switch 3 to onSelect a new passcode using Setpoint adjustment buttonsOpen the electrical Press the RUN button to save the passcodeFollow Steps 1 through 5 Selecting Temperature Control Point Select a new control point using the Display buttonSet dip switch 5 to Press the RUN button to save the control pointInstalling Auto Start Feature Insert the two power leads from the deviceWhen Auto Start is enabled Set dip switch 4 to the on positionTo disable Auto Start Apply power to the chiller Enter the passcode, if necessary Activating SPI CommunicationConnect the host machine to the chiller Enter the node addressOperation PC-1 Control Features Setpoint displayPC-2 Control Features Pumpdown On/OffPositioning Control Panel To raise and swivel the control panelTo lower the control panel To detach the PC-2 control panelEntering a Passcode Press Setpoint to select the parameter you want to changeStarting the Chiller Enter the passcodeUsing Pumpdown Feature Stopping the ChillerTo shut down the unit Press Stop Press Button to turn on PumpdownPerforming AN Auto Tune Insufficient setpoint/process deviation Page Maintenance Preventative Maintenance Schedule Inspect power cords, wires and electrical connections Quarterly every 3 monthsCleaning Evaporators Cleaning CondensersLocate the fill port at Back of the chiller Refilling the TankTo fill the reservoir Checking Refrigerant Charge If the charge is low, recharge the systemSet dip switches 3 Performing System TestsPress To shut down the chiller Then open the electrical enclosureKEY/DISPLAY Test Input Test Connect all inputs to the systemPress any key to display the first test menus Select the Input Test menuConnect all outputs to the system Output TestSelect the Output Test menu Disabling or Enabling Output Monitors Select the OM Enable/Disable menuSave changes and exit the output menu Calibrating Temperature Sensors Release the Setpoint keyExit Calibration Mode Press the up key to begin calibratingWait until the control displays don or bad Press SelectIndex through test menus to the operating log Logging Operating HoursExit the Operating Hours Log Troubleshooting Before Beginning FEW WordsVerify that you have manuals for other equip Messages shown on the control panel. TheseHOW to Identify Cause of a ProblemSupplied to the pump Motor?Is the required water flow Greater than the pump’sIs the thermocouple Loose?Ply wire leads become Level Switch fuse Has the indicated deviceHas one of the main sup Disconnected?Compressor Shut Down Alarms Refrigerant pressure is either too low or too highAll models Air-cooled unitsIs the freezestat setting Installed correctly?Freeze Stat Input is open Is there sufficient fluid Flow through he evaporaIs something wrong with Cable?System Alarms Chiller Will not Power UP Checking Replacing Fuses If fuses continue to failOn the front panel counterclockwise to open Replace the fuse. The fuses are located on the motherCheck the overload Resetting OverloadsLocate the pump overload module attached Replacing the Motherboard Replacing Compressor Contactor Reverse this procedure to install the new conRemove and discard the old contactor Checking Unloader Valve Replacing the Freezestat WE’RE Here to Help From outside the United States, callAppendix A-2 SPI Commands Supported by Conair Microkool SPI Command PairsSPI Status Words Status, ProcessStatus, Machine Appendix B-4 PARTS/DIAGRAMS PD-2 PD-3 PD-4 PD-5
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