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BluCube Installation and Maintenance Manual 7222094 V1.12.0_04_2016
Noisy Compressor
Expansion valve malfunction
(abnormally cold suction Iine).
Ensure sensor is tight on suction and
superheat is correct (normally 5 to
6°C). Replace power assembly or
valve as necessary.
Lack of oil.
Repair leaks if any, add oil if required
but not too much. Investigate pipe
system and trapping. If no oil still,
drain compressor and measure in
correct quantity.
Broken or damaged compressor
valve reed (compressor knocking).
Replace compressor (possible other
symptom is that it will have high
suction pressure).
Worn or scored compressor bearing.
(excessive knocking).
Replace compressor.
Head Pressure too high/HP cut-out
operated
Condenser coil clogged or dirty.
Clean condenser.
Overcharge of refrigerant. Normally
troublesome in warm weather.
Remove excess refrigerant from
system.
Air or other non-condensable gas in
system.
Evacuate system and re-charge with
new refrigerant.
Head pressure controller faulty.
Check fan speed controller - if faulty
replace.
Fan not operating or operating
inefficiently.
Check motor - if faulty - replace.
Head pressure too low
Fan operating too fast in low ambient
conditions.
Check fan speed controller
adjustment - if faulty - replace.
BluCube™
Condensing Unit
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Summary of Contents for BluCube CUR092V16-1CO-0
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