Chiller coldroom compressor problems.

[chemi-cool]

hi lucas,

do you remeber, when it worked ok, what was the sudtion temp?
it can help to see if the compressor is the right size.

suction temp should about -3C.

chemi

[Lucas]

Chemi at the time it was -2.

[chemi-cool]

lucas,

cut off the cup tube and install a TEV instead.

this way you can maintain a proper superheat and have some control of the suction temp.

chemi

[Lucas]

I understand what your saying Chemi,but compresor does now need replacing, which I want to do as quickly and cheaply as possible. If at allpossible I just want to replace comp and get pout of there. I explained to owner Ididn't really want to get involved but he is desperate...reckons it cost him a fortune for previous engineer.

I had a quick look at pdf and reckon the NE 2134E R22 LBP might do. If anyone would either correct or ok this I would appreciate it....I dont wanna be back and forth for this and there is doubt in my mind as Ihave never had to tryand work out an replacement................ wish I never seen the thing!

Thanks

[chemi-cool]

hi lucas,

I'm sorry but when I read again the whole thread, I saw that the compressor you had is fine. it is not a LBP that you need but M/HBP is fine, which brings me back to your first problem. it was fine and than got hot.

if the compressor is the right cooling capacity, than the problem is else where and I suspect the cup tube.

I dont like them in a walkin freezer, cant adjust them.

I'd go for a TEV and keep the EN9213E.

chemi

[Mark]

(in this application)TEV without a reciever .

[Lucas]

Yep The NE7213E is AC which is fitted, and the NE9213E is M/HBP and is what I will put on. If it don't work it don't work, I don't like doing things I'm not 100% sure of especially when the owner has been messed around so much. What threw me is in one thre NE7 & NE9 were described as the same comps and would make no difference. With any luck the previous comp was meant to be a NE9 but somewhere along the line the NE7 was fitted without realising.

Ah well we will soon see.

Thanks all.