broken connecting rod!!!!!!!!!!!!1
sorry!
but that is most likely your problem!
frank
I have a 10 ton Copeland discus and a 15 ton copelamatic on a rack system. This is a R22 system. They share a common hot gas line and suction line. The discus maintains a constant oil pressure out put at the pump of 90 pounds. The copelamatic on start up has a oil pressure output of about 85 pounds but it slowly falls and eventually trips my oil pressure control. The discus is a new compressor. The previous discus was doing the same thing. It busted one of the connector rods. The oil pump is new, I have a crank case heater on the comp and there is no foaming in the sight glass. The oil level is 1/2 way up the sight glass. I have installed a new oil separator on the system and it works great. This system is at a Save A Lot store and takes care of medium temp display boxes. It seems like there is an internal oil leak in the compressor causing the oil pressure to fall off. Has anyone encountered this problem before?
broken connecting rod!!!!!!!!!!!!1
sorry!
but that is most likely your problem!
frank
true knowledge exists in knowing that you know nothing.
Check the pressure difference between crankcase and suction valve... How new is this compressor?
I would drain the oil check the screen and the pump, it doesnt take long to do it!
Thats right, although there maybe gunk floating around.
whats up with all the chillers avatars? I liked the pink donut better! chillers are the new hvac fashion!I'm a big boy working on big intimidating chillers blah blah blah if I ever get an avatar it would be a window shaker
LMAO!!!!!!!!!! ROFL!!!!!!!!!!!!!
i like this avatar because it is from a retrofit we did on a 47 year old chiller and the avatar is of the graphics on the adaptaview!
really pretty cool! old retro graphics on an old retro chiller with modern controls!
kind of abstract!
true knowledge exists in knowing that you know nothing.
true knowledge exists in knowing that you know nothing.
Frank, that reminds me.
I have to buy a bench grinder!!!!!!!
[Avatar photo from a Florida training accident. Everyone walked away.]
2 Tim 3:16-17
RSES CMS, HVAC Electrical Specialist
Member, IAEI
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“It takes courage to grow up and turn out to be who you really are.”
- E.E. Cummings
Couple things.
#1. Telling us output pressure is, largely, meaningless. You need to properly measure NET oil pressure, or pump outlet pressure minus crankcase pressure. With a Copeland, that should be 50#.
#2. This 'Copelametic' compressor... Well, a 15HP Copelametic doesn't tell me a whole lot. How about model numbers?
While you're there getting the above information, do me a favor, IF the "copelametic" compressor is a 4D model (one with two heads) pump it down and pull the oil screen.
I would think that, with a broken rod, you'd have a lot of noise and vibration which you haven't described.
I know how to check net positive oil pressure. The pump out put pressure is the one that falls. The suction remains constant. Read the post a little closer. I said that the discus has been replaced because it was the one with the busted rod. I have pulled the oil screen and it is clean and I have changed the oil also. It is a 4D model with two heads.
Yes jpsmith1cm the discus was making a loud noise and jumping off of its mounts when the rod broke. The bearing was really worn as well as the crankshaft. If i remember right I found the bearing in two pieces after removing the bottom plate for a look see.
ryan1088 if you are implying that I was upset by jp's reply, i was not. I was simply stating that I knew how to measure NPOP and trying to clarify my first post. It looked like maybe I had not given enough detail info.
Art!
For the right price i will sell you that bench grinder!
It will cost you though!
I just retrofit the controls and starter!!!
JP
are you insinuating that the cc pressure or suction pressure effects the pressure you would read off the top of the oil pump?
are you insinuating that if the compressor was running on a bench with no refrigerant that his oil pressure would be less than 85 psi?
true knowledge exists in knowing that you know nothing.