Conair MPW, MPA manual PC-2 Control Features, Pumpdown On/Off

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All normal operating functions can be controlled from the microKool PC-2 control panel, including the optional pump- down feature.

PC-2 CONTROL FEATURES

Setpoint display

The Setpoint display shows the setpoints entered for fluid temper- ature, high and low temperature deviation alarms, the SPI baud rate, and the SPI address.

Setpoint and Actual value display windows also display some alarm codes and setup instructions.

Run/Stop

Press the RUN button to start normal operation. Press STOP to stop the unit.

=Running (green)

=Stopped (red)

=Alarm (red, flashing)

Actual values display

The green window displays the temperature at the middle of the process. The control point for this temperature is selectable as the temperature at the supply outlet, return inlet or the average of the two temperatures.

The lights indicate whether the temperature is in degrees Fahrenheit or Celsius. See the INSTALLATION section for instructions on how to change the temperature units.

Setpoint Select button

Press repeatedly until a green light appears next to the parameter you want to program or view.

NOTE: Default settings for the deviation setpoints are:

High = setpoint + 10° F Low = setpoint - 10° F

A warning alarm occurs (indicator light red) whenever the actual temperature is outside this setpoint range for more than 15 minutes.

Recommended setting: ± 2-10° F.

Setpoint adjustment buttons

Press ▲ or ▼ to enter the process temperature setpoint, SPI parameters and passcodes.

Press ▲ to increase a value. Press ▼ to decrease a value.

TIP: Press and hold the button for faster scrolling speed.

Alarm

Press to acknowledge the alarm light and silence the optional audible alarm. The alarm light will flash until the cause of the alarm condition is fixed. See Troubleshooting for alarm descriptions and remedies.

Pumpdown On/Off

The Pumpdown feature prevents refrigerant migration. The compres- sor turns on and off as needed to store refrigerant in the condenser.

Display Select button

Press repeatedly until a green light appears next to the parameter you want to program or view.

Status lights

The lights indicate the oper- ating status of the listed components. Except in Test Mode and Auto Start, the lights indicate:

= Off or inactive

= On or active (green) = Alarm condition (red)

Test Mode is used for testing displays, keys and input/out- put functions. When test mode is enabled, normal operation is disabled.

= Test Mode off

= Test Mode on (red); unit disabled

Auto Start allows you to start and stop the chiller from a remote switching

or timing device, such as the processing machine control. This feature can only ben enabled by configuring a dip switch on the control mother- board.

= Disabled; Auto Start not available

= Enabled (flashing green); unit can start any time

= On and under control of the remote device

UGH004/0999

microKool Portable Chillers

OPERATION 4-3

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Contents Page Date Manual Number UGH004/0999 Serial numbers Model numbers Introduction Table of ContentsTroubleshooting Introduction Your Responsibility AS a User Purpose User GuideHOW Guide is Organized Read this SO no ONE Gets Hurt Page Description Typical Applications What is the MicrokoolCHILLER? 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 MicroKool Portable Chillers come fully assembled UnpackingBoxes Install plumbing for process and cooling lines Preparing for InstallationMake sure the installation area provides Coat the pipe threads with thread sealant Connecting Process Water Supply LinesInstall pipe to the rear of the chiller Remove the shipping pipe plug from the femaleOpen the unit’s electrical enclosure Connecting Main Power SupplyUnits and check for leaks. If any leaks appear, stop Testing the InstallationApply power to the unit Turn on the condenser water supply MPWEntering Setpoint Deviation Parameters Dip switch Configuration Initial SetupOpen the electrical enclosure Change Dip Switch 1 to Changing Temperature UnitsSetpoint adjustment buttons Disconnect and lock out main power to the unitOpen the electrical enclosure Set dip switch 3 to on Select a new passcode usingFollow Steps 1 through 5 Press the RUN button to save the passcodeOpen the electrical 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 FeatureTo disable Auto Start Set dip switch 4 to the on positionWhen Auto Start is enabled Enter the node address Apply power to the chiller Enter the passcode, if necessaryActivating SPI Communication Connect the host machine to the chillerOperation Setpoint display PC-1 Control FeaturesPumpdown On/Off PC-2 Control FeaturesTo detach the PC-2 control panel Positioning Control PanelTo raise and swivel the control panel To lower the control panelPress Setpoint to select the parameter you want to change Entering a PasscodeEnter the passcode Starting the ChillerPress Button to turn on Pumpdown Using Pumpdown FeatureStopping the Chiller To shut down the unit Press StopPerforming 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 EvaporatorsTo fill the reservoir Refilling the TankLocate the fill port at Back of the chiller If the charge is low, recharge the system Checking Refrigerant ChargeThen open the electrical enclosure Set dip switches 3Performing System Tests Press To shut down the chillerKEY/DISPLAY Test Select the Input Test menu Input TestConnect all inputs to the system Press any key to display the first test menusSelect the Output Test menu Output TestConnect all outputs to the system Save changes and exit the output menu Select the OM Enable/Disable menuDisabling or Enabling Output Monitors Release the Setpoint key Calibrating Temperature SensorsPress Select Exit Calibration ModePress the up key to begin calibrating Wait until the control displays don or badExit the Operating Hours Log Logging Operating HoursIndex through test menus to the operating log Troubleshooting Messages shown on the control panel. These Before BeginningFEW Words Verify that you have manuals for other equipCause of a Problem HOW to IdentifyGreater than the pump’s Supplied to the pumpMotor? Is the required water flowLoose? Is the thermocoupleDisconnected? Ply wire leads becomeLevel Switch fuse Has the indicated device Has one of the main supCompressor Air-cooled units Shut Down AlarmsRefrigerant pressure is either too low or too high All modelsFlow through he evapora Is the freezestat settingInstalled correctly? Freeze Stat Input is open Is there sufficient fluidCable? Is something wrong withSystem Alarms Chiller Will not Power UP Replace the fuse. The fuses are located on the mother Checking Replacing FusesIf fuses continue to fail On the front panel counterclockwise to openLocate the pump overload module attached Resetting OverloadsCheck the overload Replacing the Motherboard Remove and discard the old contactor Reverse this procedure to install the new conReplacing Compressor 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
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