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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
the 7
th
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
Conditions
1
Winter Start (Low Pressure Time Delay)
3
Loss of Charge
4
Did not make Winter Start. Waiting on closure of pressure
switch. LLSV open and compressor OFF. Five minute wait time.
5
Low Pressure Alarm (Code 1)
8
Off on Loss of Charge. Waiting on closure of pressure switch.
LLSV open and compressor OFF. Five minute wait time.
9
Low Pressure Alarm (Code 3)
See Flow Chart on next page.
44
Содержание Liebert iCOM
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