Conair MPA Starting The Chiller, Make sure the chiller tank is full of fluid, Enter the passcode

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