Troubleshooting | Conair MPW, MPA specification

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

Image 57

Conair MPW, MPA manual Troubleshooting

Contents

Page Date Manual Number UGH004/0999 Serial numbers Model numbers Introduction Table of Contents Troubleshooting Introduction Purpose User Guide HOW Guide is OrganizedYour Responsibility AS a User Read this SO no ONE Gets Hurt Page Description What is the Microkool CHILLER?Typical Applications HOW IT Works Water Cooled HOW IT Works AIR Cooled High Efficiency Compressors Features Psi Pressure Specifications MPW Water Cooled MPA-5 Specifications MPA AIR Cooled Freeze Protection Requirements Freezing Points of Aqueous Ethylene Glycol Solutions Installation Unpacking BoxesMicroKool Portable Chillers come fully assembled Preparing for Installation Make sure the installation area providesInstall plumbing for process and cooling lines Install pipe to the rear of the chiller Connecting Process Water Supply LinesRemove the shipping pipe plug from the female Coat the pipe threads with thread sealant Open the unit’s electrical enclosure Connecting Main Power Supply Apply power to the unit Testing the InstallationTurn on the condenser water supply MPW Units and check for leaks. If any leaks appear, stop Entering Setpoint Deviation Parameters Dip switch Configuration Initial Setup Open the electrical enclosure Change Dip Switch 1 to Changing Temperature Units Open the electrical enclosure Set dip switch 3 to on Disconnect and lock out main power to the unitSelect a new passcode using Setpoint adjustment buttons Press the RUN button to save the passcode Open the electricalFollow Steps 1 through 5 Select a new control point using the Display button Selecting Temperature Control Point Press the RUN button to save the control point Set dip switch 5 to Insert the two power leads from the device Installing Auto Start Feature Set dip switch 4 to the on position When Auto Start is enabledTo disable Auto Start Activating SPI Communication Apply power to the chiller Enter the passcode, if necessaryConnect the host machine to the chiller Enter the node address Operation Setpoint display PC-1 Control Features Pumpdown On/Off PC-2 Control Features To raise and swivel the control panel Positioning Control PanelTo lower the control panel To detach the PC-2 control panel Press Setpoint to select the parameter you want to change Entering a Passcode Enter the passcode Starting the Chiller Stopping the Chiller Using Pumpdown FeatureTo shut down the unit Press Stop Press Button to turn on Pumpdown Performing AN Auto Tune Insufficient setpoint/process deviation Page Maintenance Preventative Maintenance Schedule Quarterly every 3 months Inspect power cords, wires and electrical connections Cleaning Condensers Cleaning Evaporators Refilling the Tank Locate the fill port at Back of the chillerTo fill the reservoir If the charge is low, recharge the system Checking Refrigerant Charge Performing System Tests Set dip switches 3Press To shut down the chiller Then open the electrical enclosure KEY/DISPLAY Test Connect all inputs to the system Input TestPress any key to display the first test menus Select the Input Test menu Output Test Connect all outputs to the systemSelect the Output Test menu Select the OM Enable/Disable menu Disabling or Enabling Output MonitorsSave changes and exit the output menu Release the Setpoint key Calibrating Temperature Sensors Press the up key to begin calibrating Exit Calibration ModeWait until the control displays don or bad Press Select Logging Operating Hours Index through test menus to the operating logExit the Operating Hours Log Troubleshooting FEW Words Before BeginningVerify that you have manuals for other equip Messages shown on the control panel. These Cause of a Problem HOW to Identify Motor? Supplied to the pumpIs the required water flow Greater than the pump’s Loose? Is the thermocouple Level Switch fuse Has the indicated device Ply wire leads becomeHas one of the main sup Disconnected? Compressor Refrigerant pressure is either too low or too high Shut Down AlarmsAll models Air-cooled units Installed correctly? Is the freezestat settingFreeze Stat Input is open Is there sufficient fluid Flow through he evapora Cable? Is something wrong with System Alarms Chiller Will not Power UP If fuses continue to fail Checking Replacing FusesOn the front panel counterclockwise to open Replace the fuse. The fuses are located on the mother Resetting Overloads Check the overloadLocate the pump overload module attached Replacing the Motherboard Reverse this procedure to install the new con Replacing Compressor ContactorRemove and discard the old contactor Checking Unloader Valve Replacing the Freezestat From outside the United States, call WE’RE Here to Help Appendix A-2 SPI Command Pairs SPI Commands Supported by Conair Microkool Status, Process SPI Status Words Status, Machine Appendix B-4 PARTS/DIAGRAMS PD-2 PD-3 PD-4 PD-5