Profroid QuietCO2OL Series - Page 38

MAINTENANCE
34
Défaut
Cause probable
Action requise
11. Abnormal noise in
the compressor
Bolts loose
Tighten bolts
Fluid in the suction
line
Check and re-set the expansion
valves. Check that the liquid solenoid
valves do not remain open when
machine stops
The Discharge temperature
sensor is not stable or badly
positionned
Check sensor position
Emulsion in oil crankcase
Incorrect lubrication
12. The compressor motor
does not start
Low pressure switch cuts-out
See paragraph 3
High pressure switch cuts-out
See paragraph 6
Fuses burn out
Check the cause and change fuses
Anti-short cycle time delay relay
is in operation
Wait
Internal security switched out
Check cause of increase in motor
winding temperatures
Main circuit-breaker open
Close circuit-breaker
13. Compressor works
continuously
Control system or other
automatic device fault
See paragraphs 12 et 13
Installation insufficiently
charged
Charge installation with refrigerant
Evaporators blocked or ice present
Clean and defrost evaporators