problem with low ambient temp and oversized compressor

[RAN]

Hello.
Have a problem with system stopping at lp when cold outdoor temp.
First of all the compressor and condensor is oversized, system designed for 4 walk in cold storage rooms. Today only 2 rooms are in operation.
The compressor only runs for a few minutes before stopping at lp.
To get system running i have to "force" it for about 5 min so the cond pressure builds up and getting liquid back from the condensor. This is only a problem with ambient temp below -20c and last week it has been about -25c -30c outside temp. Only the condensor is located outside with a one way valve on liquid line inside near accumaltor tank. The fans are pressure controled so they dont start at all when this cold.
Would a danfoss kvr solve this problem?

Thanks

[sedgy]

hey ran ,
if its -30c ambiant why run macanical cooling when it would be a lot cheaper running a fan to outside
and have a air filter on an opening for air coming in ?
would be interested to hear your comments ? sedgy

[paul_h]

accumulator to stop flood back to compressor (don't know how much that would help as I haven't ever seen ambients below +2C), and a time delay circuit to bypass LP?

[charlie patt]

at that low a ambient man thats cold you can fit a bypass valve on a timer and anything that creates heat suction accumulator heater crankheater etc

[chemi-cool]

How many fans on the condenser and how many are running at this ambient?

Is there any pressure control for the fans?

[goshen]

HI
AS SAID BEFORE A FREECOOLING METHOD WOULD BE RECOMENDED!
but if you insist to work this way ,using a bypass would certinaly help at least at startup!!!
good luck