Conair MPW, MPA Changing Temperature Units, Open the electrical enclosure Change Dip Switch 1 to

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WARNING: Electric shock hazard

This equipment is powered by high voltage. Always disconnect and lock out the main power source before opening the unit or the electrical enclosure to modify factory settings. Failure to disconnect and lock out the main power source can result in severe personal injury.

The temperature units are factory-set as degrees Celsius or degrees Fahrenheit, as specified when the unit was ordered.

When the chiller is on, the indicator lights to the right of the Actual temperature display on the control panel will show which temperature unit has been set.

To change this setting, move Dip Switch 1 on the control circuit board.

1				Disconnect and lock out main power to the
				chiller.
				Open the electrical enclosure.
	2			Open the electrical enclosure.
				Change Dip Switch 1 to:
	3			Change Dip Switch 1 to:
				OFF for °F																			ON for °C

			8				7 6			5		4		3			2 1						8			7 6			5		4			3	2 1

4 Close the electrical enclosure and restore main power to begin operating.

CHANGING

TEMPERATURE

UNITS

UGH004/0999

microKool Portable Chillers

INSTALLATION

3-9

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Contents Page Date Manual Number UGH004/0999 Serial numbers Model numbers Introduction Table of ContentsTroubleshooting 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 High Efficiency Compressors FeaturesPsi Pressure Specifications MPW Water CooledMPA-5 Specifications MPA AIR CooledFreeze Protection Requirements Freezing Points of Aqueous Ethylene Glycol SolutionsInstallation Boxes UnpackingMicroKool Portable Chillers come fully assembled Make sure the installation area provides Preparing for InstallationInstall 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 sealantOpen the unit’s electrical enclosure Connecting Main Power SupplyApply power to the unit Testing the InstallationTurn on the condenser water supply MPW Units and check for leaks. If any leaks appear, stopEntering Setpoint Deviation Parameters Dip switch Configuration Initial SetupOpen the electrical enclosure Change Dip Switch 1 to Changing Temperature UnitsOpen the electrical enclosure Set dip switch 3 to on Disconnect and lock out main power to the unitSelect a new passcode using Setpoint adjustment buttonsOpen the electrical Press the RUN button to save the passcodeFollow Steps 1 through 5 Select a new control point using the Display button Selecting Temperature Control PointPress the RUN button to save the control point Set dip switch 5 toInsert the two power leads from the device Installing Auto Start FeatureWhen Auto Start is enabled Set dip switch 4 to the on positionTo 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 addressOperation Setpoint display PC-1 Control FeaturesPumpdown On/Off PC-2 Control FeaturesTo raise and swivel the control panel Positioning Control PanelTo lower the control panel To detach the PC-2 control panelPress Setpoint to select the parameter you want to change Entering a PasscodeEnter the passcode Starting the ChillerStopping the Chiller Using Pumpdown FeatureTo shut down the unit Press Stop Press Button to turn on PumpdownPerforming AN Auto Tune Insufficient setpoint/process deviation Page Maintenance Preventative Maintenance Schedule Quarterly every 3 months Inspect power cords, wires and electrical connectionsCleaning Condensers Cleaning EvaporatorsLocate the fill port at Back of the chiller Refilling the TankTo fill the reservoir If the charge is low, recharge the system Checking Refrigerant ChargePerforming System Tests Set dip switches 3Press To shut down the chiller Then open the electrical enclosureKEY/DISPLAY Test Connect all inputs to the system Input TestPress 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 Release the Setpoint key Calibrating Temperature SensorsPress the up key to begin calibrating Exit Calibration ModeWait until the control displays don or bad Press SelectIndex through test menus to the operating log Logging Operating HoursExit the Operating Hours Log Troubleshooting FEW Words Before BeginningVerify that you have manuals for other equip Messages shown on the control panel. TheseCause of a Problem HOW to IdentifyMotor? Supplied to the pumpIs the required water flow Greater than the pump’sLoose? Is the thermocoupleLevel 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 unitsInstalled correctly? Is the freezestat settingFreeze Stat Input is open Is there sufficient fluid Flow through he evaporaCable? Is something wrong withSystem 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 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 From outside the United States, call WE’RE Here to HelpAppendix A-2 SPI Command Pairs SPI Commands Supported by Conair MicrokoolStatus, Process SPI Status WordsStatus, Machine Appendix B-4 PARTS/DIAGRAMS PD-2 PD-3 PD-4 PD-5