Profroid GSB Notice D'instructions page 39

FAULT PROBABLE CAUSE
13. Capacity too
Problem with control system or other automatic device.
great
14. Capacity
Problem with control system or other automatic device.
insufficient
15. Oil level drops in
During start-up, some of the oil is released into the unit.
the oil tank
Separator float not working or orifice blocked.
Degassing valve blocked shut.
Level controller blocked open.
Too much oil in the tank.
Oil foams Thermostatic expansion valve (fluid in suction line).
16.
heavily after Bulb loose or incorrectly positioned
Crankcase heater out of order
stoppage
t
17. Compressor trips
Pressure switch not working or connection problem.
when oil pressure
switch is pressed
Oil pressure not showing.
Compressor sight glass level too low.
Abnormal Noise Bolts loose.
18.
in Compressor Broken connecting-rod
Fluid in suction line
(*)
Bulb is loose or incorrectly positioned.
Emulsion in oil crankcase
The
19. Oil pressure switch cuts out after time delay..
Low pressure switch cuts out.
Compressor Motor
does not start High pressure switch cuts out.
Fuses burnt out
Anti-short cycle time delay relay is in operation
Thermal relay or KRIWAN
Main circuit breaker switch open.
Control system or other automatic device fault.
The
20.
Installation insufficiently charged
Compressor works
Internal safety valve not watertight or opening too soon.
continuously
Evaporators blocked or ice present
(*)If there is an abnormal noise in the compressor, switch off the compressor. Find the cause of the
noise and remedy before re-starting
ACTION REQUIRED
Replace, repair or reset
Replace, repair or reset
Notably with units using CFC type fluids, some of the oil is in
the circuit and has difficulty in returning to the tank.
Replace or clean.
Replace or clean.
Check and replace
Drain the excess oil from the unit.
Ensure the oil is able to return to the tank
Breakdown and stagger defrosting.
Check thermostatic expansion valve.
Check bulb position
Replace heater
Check switch.
Tighten connections.
Replace pressure switch if necessary.
Pump not working.
Serious mechanical problem.
Suction filter blocked.
Check that the bottle contains water (see § 15)
Check the oil supply to the level controller (see § 12)
Check the float is working (replace if necessary).
Tighten bolts
Do not re-start compressor
Check and re-set thermostatic expansion valves.
Check that the liquid solenoid valves do not remain open
when machine stops.
Check bulb position
Incorrect lubrication. See paragraphs 13 and 10.
See paragraphs 9 - 10 - 11 - 12.
See paragraph 3.
See paragraph 5.
Check the cause and change fuses
Wait
Check cause of overload
Close circuit-breaker.
See paragraphs 13 and 14.
Charge installation with refrigerant
See paragraphs 1 et 5.
Clean and defrost evaporators
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