Conair MPA manual Testing the Installation, Turn on the condenser water supply MPW

Page 22

TESTING THE INSTALLATION

NOTE: Make sure the chiller tank is full of process fluid before you begin operating.

 

 

 

 

 

WARNING: Only qualified personnel

 

 

 

 

 

should perform this procedure.

 

 

 

 

 

 

 

Parts of this test require opening the unit while it is

 

 

 

 

 

energized. Only qualified personnel who have been

 

 

 

 

 

trained in the use of electrical testing devices and

 

 

 

 

 

in avoiding the safety hazards involved in safely

 

 

 

 

 

troubleshooting this type of equipment should per-

 

 

 

 

 

form this test procedure.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Turn on the condenser water supply (MPW

 

1

 

 

 

 

units) and check for leaks. If any leaks appear, stop

 

 

 

 

the test and fix the problem before continuing. The water

 

 

 

 

pressure must be at least must be at least 25 PSI at the

 

 

 

 

condenser inlet.

 

 

 

 

 

 

Apply power to the unit.

 

 

 

2

 

 

 

 

 

 

 

◆ Indicator lights on the control panel blink green, then

 

 

 

 

 

red, to test operation of the LEDs.

 

 

 

 

 

 

◆ Setpoint and actual windows will display

 

 

for

 

 

 

 

 

three seconds, followed by the software version. The

 

 

 

 

 

windows then display the factory default setpoint of

 

 

 

 

 

50° F (10° C) and the actual temperature.

 

 

 

 

 

 

 

 

 

 

 

3

 

 

Check the rotation of the pump. Remove the

 

 

 

 

access panel and verify that the pump rotation matches the

 

 

 

 

direction indicated on the rotation stamp on the pump.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: If the rotation is incorrect, stop the test and

 

 

 

 

 

 

disconnect power to the unit. Open the electrical

 

 

 

 

 

 

enclosure and switch any two of the three power

 

 

 

 

 

 

source wires on the terminal block. Return to Step 2

 

 

 

 

 

and check rotation again.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

Replace the access panel.

 

 

 

 

 

 

Press the RUN key to start the unit.

 

 

 

5

 

 

 

 

If everything is working correctly: ◆ The RUN/STOP light turns green.

◆ The pump begins operating. The compressor turns on after 3 seconds, if the actual temperature is above the setpoint.

◆ Normal operation begins. The unloader valves turn on, if the actual temperature is below setpoint. The com- pressor remains active until the actual temperature is 6° F below the setpoint.

The test is over. Proceed to initial setup if the unit operated normally; refer to the TROUBLESHOOTING section if it did not.

3-6

INSTALLATION

microKool Portable Chillers

UGH004/0999

 

 

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Contents Page Date Manual Number UGH004/0999 Serial numbers Model numbers Table of Contents IntroductionTroubleshooting 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 CompressorsSpecifications MPW Water Cooled Psi PressureSpecifications MPA AIR Cooled MPA-5Freezing Points of Aqueous Ethylene Glycol Solutions Freeze Protection RequirementsInstallation 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 sealantConnecting Main Power Supply Open the unit’s electrical enclosureTurn on the condenser water supply MPW Testing the InstallationApply power to the unit Units and check for leaks. If any leaks appear, stopEntering Setpoint Deviation Parameters Initial Setup Dip switch ConfigurationChanging Temperature Units Open the electrical enclosure Change Dip Switch 1 toSelect a new passcode using Disconnect and lock out main power to the unitOpen the electrical enclosure Set dip switch 3 to on Setpoint adjustment buttonsOpen 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 buttonSet dip switch 5 to Press the RUN button to save the control pointInstalling Auto Start Feature Insert the two power leads from the deviceWhen 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 addressOperation PC-1 Control Features Setpoint displayPC-2 Control Features Pumpdown On/OffTo lower the control panel Positioning Control PanelTo raise and swivel the control panel To detach the PC-2 control panelEntering a Passcode Press Setpoint to select the parameter you want to changeStarting the Chiller Enter the passcodeTo shut down the unit Press Stop Using Pumpdown FeatureStopping the Chiller Press Button to turn on PumpdownPerforming AN Auto Tune Insufficient setpoint/process deviation Page Maintenance Preventative Maintenance Schedule Inspect power cords, wires and electrical connections Quarterly every 3 monthsCleaning Evaporators Cleaning CondensersLocate the fill port at Back of the chiller Refilling the TankTo fill the reservoir Checking Refrigerant Charge If the charge is low, recharge the systemPress To shut down the chiller Set dip switches 3Performing System Tests Then open the electrical enclosureKEY/DISPLAY Test Press any key to display the first test menus Input TestConnect all inputs to the system 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 Calibrating Temperature Sensors Release the Setpoint keyWait until the control displays don or bad Exit Calibration ModePress the up key to begin calibrating Press SelectIndex 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. TheseHOW to Identify Cause of a ProblemIs the required water flow Supplied to the pumpMotor? Greater than the pump’sIs 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 unitsFreeze Stat Input is open Is there sufficient fluid Is the freezestat settingInstalled correctly? Flow through he evaporaIs 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 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 WE’RE Here to Help From outside the United States, callAppendix A-2 SPI Commands Supported by Conair Microkool SPI Command PairsSPI Status Words Status, ProcessStatus, Machine Appendix B-4 PARTS/DIAGRAMS PD-2 PD-3 PD-4 PD-5
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