What is the Microkool, Chiller?, Typical Applications | Conair MPA

WHAT IS THE MICROKOOL

The microKool portable chillers are designed to provide chilled water for industrial applications requiring 24-hour-a- day performance.

CHILLER?

Operation of air-cooled and water-cooled units differ only in the medium used to remove heat from the refrigerant in the condensers.

Water-cooled models use 85° F (29° C) cooling tower water, and are equipped with high efficiency tube-in-tube condensers with water regulating valves.

Air-cooled models use 95° F (35° C) ambient air and alu- minum-fin, copper-tube condensers. Units above 1.5 Hp include automatic fan cycling controls.

Units are totally self-contained for easy, economical installa- tion. To operate, simply connect the power source, process piping and fill with water or an industrial antifreeze mixture.

The standard PC-1 microprocessor control displays setpoint and actual temperature of the process fluid, and provides SPI communication. Nine operating and fault indicator lights dis- play the status of the chiller components.

The enhanced PC-2 control offers the same features as the standard control plus autostart capabilities, which enables the chiller to start automatically with a timing device or the start- ing of the primary process machine.

TYPICAL

APPLICATIONS

These chillers are ideal for cooling to maintain process tem- peratures in an injection molding machine or extruder and wherever you need a small, moveable cooling unit.

Capacities range from 1.2 to 10.2 tons. Standard operating set- points are between 20° F (-7° C) and 65° F (19° C) LWT. Adequate freeze protection is required.

Choose water-cooled portable chillers:

●for maximum capacity and minimal maintenance.

●when maintaining ambient air temperature is important, such as an air-conditioned environment.

●when tower water or another inexpensive water source is available.

Choose air-cooled portable chillers.

●when plant water supply is inadequate or limited.

●when process heat must be extracted and used for space heating.

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DESCRIPTION

microKool Portable Chillers

UGH004/0999

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Conair MPA, MPW manual What is the Microkool, Chiller?, Typical Applications

Contents

Page Date Manual Number UGH004/0999 Serial numbers Model numbers Table of Contents Introduction Troubleshooting 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 Compressors Specifications MPW Water Cooled Psi Pressure Specifications MPA AIR Cooled MPA-5 Freezing Points of Aqueous Ethylene Glycol Solutions Freeze Protection Requirements Installation Boxes UnpackingMicroKool Portable Chillers come fully assembled Make sure the installation area provides Preparing for InstallationInstall plumbing for process and cooling lines Remove the shipping pipe plug from the female Connecting Process Water Supply LinesInstall pipe to the rear of the chiller Coat the pipe threads with thread sealant Connecting Main Power Supply Open the unit’s electrical enclosure Turn on the condenser water supply MPW Testing the InstallationApply power to the unit Units and check for leaks. If any leaks appear, stop Entering Setpoint Deviation Parameters Initial Setup Dip switch Configuration Changing Temperature Units Open the electrical enclosure Change Dip Switch 1 to Select a new passcode using Disconnect and lock out main power to the unitOpen the electrical enclosure Set dip switch 3 to on Setpoint adjustment buttons Open 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 button Set dip switch 5 to Press the RUN button to save the control point Installing Auto Start Feature Insert the two power leads from the device When Auto Start is enabled Set dip switch 4 to the on positionTo disable Auto Start Connect the host machine to the chiller Apply power to the chiller Enter the passcode, if necessaryActivating SPI Communication Enter the node address Operation PC-1 Control Features Setpoint display PC-2 Control Features Pumpdown On/Off To lower the control panel Positioning Control PanelTo raise and swivel the control panel To detach the PC-2 control panel Entering a Passcode Press Setpoint to select the parameter you want to change Starting the Chiller Enter the passcode To shut down the unit Press Stop Using Pumpdown FeatureStopping the Chiller Press Button to turn on Pumpdown Performing AN Auto Tune Insufficient setpoint/process deviation Page Maintenance Preventative Maintenance Schedule Inspect power cords, wires and electrical connections Quarterly every 3 months Cleaning Evaporators Cleaning Condensers Locate the fill port at Back of the chiller Refilling the TankTo fill the reservoir Checking Refrigerant Charge If the charge is low, recharge the system Press To shut down the chiller Set dip switches 3Performing System Tests Then open the electrical enclosure KEY/DISPLAY Test Press any key to display the first test menus Input TestConnect all inputs to the system Select the Input Test menu Connect 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 key Wait until the control displays don or bad Exit Calibration ModePress the up key to begin calibrating Press Select Index through test menus to the operating log Logging Operating HoursExit the Operating Hours Log Troubleshooting Verify that you have manuals for other equip Before BeginningFEW Words Messages shown on the control panel. These HOW to Identify Cause of a Problem Is the required water flow Supplied to the pumpMotor? Greater than the pump’s Is the thermocouple Loose? Has one of the main sup Ply wire leads becomeLevel Switch fuse Has the indicated device Disconnected? Compressor All models Shut Down AlarmsRefrigerant pressure is either too low or too high Air-cooled units Freeze Stat Input is open Is there sufficient fluid Is the freezestat settingInstalled correctly? Flow through he evapora Is something wrong with Cable? System Alarms Chiller Will not Power UP On the front panel counterclockwise to open Checking Replacing FusesIf fuses continue to fail Replace the fuse. The fuses are located on the mother Check 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, call Appendix A-2 SPI Commands Supported by Conair Microkool SPI Command Pairs SPI Status Words Status, Process Status, Machine Appendix B-4 PARTS/DIAGRAMS PD-2 PD-3 PD-4 PD-5