Conair MPA, MPW manual Starting the Chiller, Enter the passcode

Page 38

STARTING THE CHILLER

IMPORTANT: If you are operating the chiller for the first time since installation, you should perform an Auto Tune after two hours of nor- mal operation. You should perform the Auto Tune peri- odically to ensure that the control correctly calculates how much heat and cooling should be applied to main- tain the process setpoint.

See PERFORMING AN AUTO TUNE.

Before starting the chiller, verify that the system has been installed correctly for your application. See the INSTALLATION section. If Passcode Protection has been enabled, you must enter the correct passcode before you can change or enter any of the operating parameters, including the setpoint.

1 Turn on main power to the chiller at least 12 hours before you want to begin processing.

This allows time for crankcase heater to evaporate liquid refrigerant migrating in the compressor. When power is turned on:

◆The compressor crankcase heater turns on.

◆Indicator lights blink green, then red.

◆Setpoint and actual windows will display for three seconds, followed by the software version. The windows then display the previously entered setpoint and the actual temperature.

2 Make sure the chiller tank is full of fluid.

3 Turn on the water supply to the chiller (MPW).

The supply must be at least 25 psi. Check for leaks in the condenser water and process fluid lines before continuing.

4 Enter the passcode,

if necessary. Hold the Setpoint Select button for 5 seconds. When the control displays 1 PaS, use the setpoint adjustment buttons to enter the passcode. Press the Setpoint Select button again.

5 Enter the temperature set- point. Press the Setpoint Select button until the green light appears next to Temperature. Press ▲ to increase or ▼ to decrease the temperature setting.

6 Press Run to start normal operation.

◆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 compres- sor remains active until the actual temperature is 6° F below the setpoint.

If the Alarm light turns on, press to silence the option- al audible alarm. Then see the TROUBLESHOOTING section.

4-6

OPERATION

microKool Portable Chillers

UGH004/0999

Image 38

Contents Page Date Manual Number UGH004/0999 Serial numbers Model numbers Table of Contents IntroductionTroubleshooting 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 Features High Efficiency CompressorsSpecifications MPW Water Cooled Psi PressureSpecifications MPA AIR Cooled MPA-5Freezing Points of Aqueous Ethylene Glycol Solutions Freeze Protection RequirementsInstallation MicroKool Portable Chillers come fully assembled UnpackingBoxes Install plumbing for process and cooling lines Preparing for InstallationMake sure the installation area provides 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 buttonsFollow Steps 1 through 5 Press the RUN button to save the passcodeOpen the electrical 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 deviceTo disable Auto Start Set dip switch 4 to the on positionWhen Auto Start is enabled 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 CondensersTo fill the reservoir Refilling the TankLocate the fill port at Back of the chiller 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 menuSelect 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 Calibrating Temperature Sensors Release the Setpoint keyWait until the control displays don or bad Exit Calibration ModePress the up key to begin calibrating Press SelectExit the Operating Hours Log Logging Operating HoursIndex through test menus to the operating 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 motherLocate 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 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