Emerson Liebert iCOM Training And Service Manual page 45

iCOM
Controls Training and Service Manual
does not open, the compressor and LLSV are locked off and an alarm "Pump
Down Fail" will appear.
There is a re-pump down if the LPS opens again after the compressor has been
already stopped – a maximum of 6 re-pump-down cycles per hour are allowed: at
th
the 7 request of re-pump down the alarm "Pump Down Fail" will appear and the
compressor will be locked out.
Pump down is always performed loaded (for compressors with unloaders:
unloaders off, digital scroll: control solenoid valve disabled).
Phases
1 Winter Start (Low Pressure Time Delay)
3 Loss of Charge
Did not make Winter Start. Waiting on closure of pressure
4
switch. LLSV open and compressor OFF. Five minute wait time.
5 Low Pressure Alarm (Code 1)
Off on Loss of Charge. Waiting on closure of pressure switch.
8
LLSV open and compressor OFF. Five minute wait time.
9 Low Pressure Alarm (Code 3)
See Flow Chart on next page.
Conditions
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