Conair MPW, MPA Quarterly every 3 months, Inspect power cords, wires and electrical connections

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●Quarterly (every 3 months)

❒Inspect power cords, wires and electrical connections.

Check for loose or frayed wires, burned contacts, and signs of overheated wires. Check exterior power cords to the main power source and from the electrical box to the pump and heating elements. Check the ground wire and thermocouple connections. Replace any wire that appears damaged or has worn or cracked insulation.

●Annually (every 12 months)

❒Test and calibrate the unit’s control systems. The chiller’s Test Mode checks the operation

of displays, control buttons, inputs and outputs. You can also calibrate the supply and return thermocouples.

See PERFORMING SYSTEM TESTS in this section.

❒Clean all surfaces that come in contact with water. Minerals and other water contaminants cause heat- transfer surface fouling and decrease performance, especially in the water-cooled chiller’s condenser. Clean all water-cooled condenser surfaces. The refrigerant side does not foul because the refrigerant acts as a solvent and operates in a closed filter cycle. See CLEANING

EVAPORATORS AND CONDENSERS in this section.

WARNING: Improper servicing may result in equipment damage or per- sonal injury.

This equipment should be installed, adjusted, and serviced by qualified technical personnel who are familiar with the construction, opera- tion and potential hazards of this type of equip- ment.

All wiring, disconnects and fuses should be installed by qualified electrical technicians in accordance with electrical codes in your region.

Only certified refrigerant technicians should recharge the refrigerant used in this system.

Always disconnect and lock out the incoming main power source before opening the electri- cal enclosure or performing non-standard oper- ating procedures, such as troubleshooting or maintenance. Only qualified personnel should perform procedures that require access to the electrical enclosure while power is on.

PREVENTATIVE

MAINTENANCE

SCHEDULE

UGH004/0999

microKool Portable Chillers

MAINTENANCE 5-3

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Contents Page Date Manual Number UGH004/0999 Serial numbers Model numbers Introduction Table of ContentsTroubleshooting 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 FeaturesPsi Pressure Specifications MPW Water CooledMPA-5 Specifications MPA AIR CooledFreeze Protection Requirements Freezing Points of Aqueous Ethylene Glycol SolutionsInstallation 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 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 buttonsPress 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 PointPress the RUN button to save the control point Set dip switch 5 toInsert the two power leads from the device Installing Auto Start FeatureSet 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 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 EvaporatorsRefilling the Tank Locate the fill port at Back of the chillerTo 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 menuOutput 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 SensorsPress the up key to begin calibrating Exit Calibration ModeWait until the control displays don or bad Press SelectLogging 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. 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 motherResetting 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 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