Conair PCW-1.5 User Manual page 60

4 - 1 8 l O p e r a t i o n
P L C C o n t r o l Vi e w i n g R u n M e n u
After you have viewed all the Status screens and made any necessary changes to the
Setup screens, you are ready to run the Chiller. To run the chiller from the main
screen:
1
Press the Run arrow on the Main screen.
Temperature 50F
Setpoint 50F
Stat Setup Run Alarm
2
Press the RUN arrow.
Run Stop Manual
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In Run mode the compressor cycles off at 4° below the setpoint if the load is too low
for the hot gas to keep the compressor from shutting down. If the compressor shuts
down it will not restart until after 3 minutes and only if temperature is at least 1°F
above setpoint.
If you want to stop the compressor and continue to run the pump, choose following.
3
Pumpdown sequence
From Run Menu, choose Manual then press Next and select Pumpdown. The liquid
line solenoid valve will close while compressor remains on until refrigerant is pumped
down to 28 psig, then the compressor will cycle off.
To stop the chiller at any time, press the Function Key Stop button on the control.
The chiller control and display screen remain on, but the pump and compressor stop.
To disable pumpdown, press previous twice, then press Run.
If you try to restart immediately, the pump will turn on but the compressor will not
turn on for three minutes. The Process Pump light on the control panel will light
immediately and the compressor light will flash. After three minutes the compressor
turns on and the Compressor light on the control panel lights.
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