Quincy Compressor QED 650, Instruction And Maintenance Manual

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Condition Fault Remedy
Motor overload protection of
refrigerant compressor motor
has tripped Have motor checked
For resetting: see the section
Electrical system
High-pressure switch tripped See above
- Condensate drain remains
inoperative Automatic drain system
clogged Flush the assembly by opening
manual drain valve.
Have system inspected
- Condensate trap continuously
discharges air and water Automatic drain system out of
order Have system checked. If necessary
replace automatic drain
- Evaporator pressure is too high
or too low at unload Hot-gas by-pass valve
incorrectly set or out of order Have hot-gas by-pass valve adjusted
Condenser pressure too high
or too low See above
Shortage of refrigerant Have circuit checked for leaks and
recharged
Instruction book
2920 1818 00 91