RADO
08-09-2008, 09:21 PM
I have a problem with a Carrier 38AH-055 R22 AC condensing unit that is operating as a process AC.
Evaporator has to cool an electrical switchroom with an ambient aprox 21C to be maintained.
Outside the ambient is dropping to 5C. Problem is the crankcase heater dosnt seem to be warming the oil enough to stop foaming and slugging on startup.
Not being used to low ambients has anyone come across the problem of the cranckcase heater not providing enough heat?
Carrier manual says operation is good down to -30C (with cond fan controller)
I also suspect the suction line may be acumulating liquid.
cheers
Evaporator has to cool an electrical switchroom with an ambient aprox 21C to be maintained.
Outside the ambient is dropping to 5C. Problem is the crankcase heater dosnt seem to be warming the oil enough to stop foaming and slugging on startup.
Not being used to low ambients has anyone come across the problem of the cranckcase heater not providing enough heat?
Carrier manual says operation is good down to -30C (with cond fan controller)
I also suspect the suction line may be acumulating liquid.
cheers