HOW IT Works Water Cooled | Conair MPW, MPA instruction

Water-cooled models use tube-in-tube heat exchangers to condense the hot, compressed, refrigerant gas from the compressor to a cool liquid.

The cool liquid refrigerant passes through a filter/dryer, which protects the system from moisture or other contami- nants. An in-line sight glass gives a visual indication of proper refrigerant charge and any dangerous moisture pre- sent in the system.

The refrigerant passes through a thermal expansion valve, where it expands, cools and is precisely metered into the refrigerant heat exchanger (evaporator).

The evaporator removes the heat from the process fluid.

HOW IT WORKS: WATER COOLED

Typical water-cooled plumbing diagram

UGH004/0999

microKool Portable Chillers

DESCRIPTION

2-3

Image 11

Conair MPW, MPA manual HOW IT Works Water Cooled

Contents

Page Date Manual Number UGH004/0999 Serial numbers Model numbers Introduction Table of Contents Troubleshooting 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 Features Psi Pressure Specifications MPW Water Cooled MPA-5 Specifications MPA AIR Cooled Freeze Protection Requirements Freezing Points of Aqueous Ethylene Glycol Solutions Installation 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 female Open the unit’s electrical enclosure Connecting Main Power Supply Units and check for leaks. If any leaks appear, stop Testing the InstallationApply power to the unit Turn on the condenser water supply MPW Entering Setpoint Deviation Parameters Dip switch Configuration Initial Setup Open the electrical enclosure Change Dip Switch 1 to Changing Temperature Units Setpoint adjustment buttons Disconnect and lock out main power to the unitOpen the electrical enclosure Set dip switch 3 to on Select a new passcode using Follow 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 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 To 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 chiller Operation Setpoint display PC-1 Control Features Pumpdown On/Off PC-2 Control Features To detach the PC-2 control panel Positioning Control PanelTo raise and swivel the control panel To lower the control panel Press Setpoint to select the parameter you want to change Entering a Passcode Enter the passcode Starting the Chiller Press Button to turn on Pumpdown Using Pumpdown FeatureStopping the Chiller To shut down the unit Press Stop 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 To fill the reservoir Refilling the TankLocate the fill port at Back of the chiller If the charge is low, recharge the system Checking Refrigerant Charge Then open the electrical enclosure Set dip switches 3Performing System Tests Press To shut down the chiller KEY/DISPLAY Test Select the Input Test menu Input TestConnect all inputs to the system Press any key to display the first test menus Select 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 Sensors Press Select Exit Calibration ModePress the up key to begin calibrating Wait until the control displays don or bad Exit 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 equip Cause of a Problem HOW to Identify Greater than the pump’s Supplied to the pumpMotor? Is the required water flow Loose? Is the thermocouple Disconnected? Ply wire leads becomeLevel Switch fuse Has the indicated device Has one of the main sup Compressor Air-cooled units Shut Down AlarmsRefrigerant pressure is either too low or too high All models Flow through he evapora Is the freezestat settingInstalled correctly? Freeze Stat Input is open Is there sufficient fluid Cable? Is something wrong with System 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 open Locate 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 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