Cascade system -90*C

[edi_197677]

hii all,

iam new in this forum, please give me some advise cause my problem as follow :

my cascade system using two compressor Danfoss gs26clx for both stage.
Condensor 1 HP Power, Filter Drier, Double Pipe Hx, Expansion Tank 1 Hp.
High Stage Refrigerant using R1270 and Low Stage Refrigerant using R1150.
Freezer Evaporator about 260 Ltr. need temperature -90*C.
that system already running very well almost 1 week. after that the low stage LP become vaccum zone. and temperature going rise up to the room temperature.

somebody please help me to solve this problem.

thanks,
Regards,



Edi

[mianrizwan]

when the system where ok then what was the Ampir of the system. and after the fault what ampirs shows on A meter.
2nd. what is the pozition of bubbles in sight glass.
3rd. what is the gauge pressure when system is not working.

[mianrizwan]

tell me the full detal of ur cooling unit.

[jcook1982]

Most likely oil logging.. Use some kind of solvent to flush through the cap tube. To confirm the logging check the evap temperature inlet and outlet ( if its possible).