gsholz
Senior Member
- Joined
- Nov 2, 2016
- Messages
- 484
- Location
- Northwest
- Vessel Make
- Sold-GB 52 Europa, Queenship 59, Tolly 45
I'm new to cold plate refrigeration and would appreciate feedback. We have the Grunert Passagemaker holding plate system with two refrigerators and one freezer. The system is AC-powered and has both air and water cooled condensers operating when the unit is on. The compressor is hermetically sealed.
The system is operating but it is not pulling down the cold plates as I think it should. I understand running it for a couple of hours in the morning and evening should keep the cold plates frozen. I have run it for days without the system cycling off. When I look at the evaporators/cold plates, only the first third or so is frosted after running several hours. I understand the cold plates should be completely frosted.
I suspect the refrigerant charge needs to be topped off or the expansion valves need to be adjusted (opened further). Since none of the cold plates really freeze, I suspect the culprit is low refrigerant charge. Anything else I should be looking at?
The system is operating but it is not pulling down the cold plates as I think it should. I understand running it for a couple of hours in the morning and evening should keep the cold plates frozen. I have run it for days without the system cycling off. When I look at the evaporators/cold plates, only the first third or so is frosted after running several hours. I understand the cold plates should be completely frosted.
I suspect the refrigerant charge needs to be topped off or the expansion valves need to be adjusted (opened further). Since none of the cold plates really freeze, I suspect the culprit is low refrigerant charge. Anything else I should be looking at?