Oil Loss and Recovery Problem in Centrifugal Chiller
Oil Loss and Recovery Problem in Centrifugal Chiller
(OP)
I am experiencing Oil loss and Oil recovery Problem in a Centrifugal Chiller, Capacity 1000 TOns. Oil level in the sight glass disappear within 10 to 15 minutes of the chiller operation. Can anybody advice me on the causes, Thnaks in advance.





RE: Oil Loss and Recovery Problem in Centrifugal Chiller
RE: Oil Loss and Recovery Problem in Centrifugal Chiller
Thanks.
RE: Oil Loss and Recovery Problem in Centrifugal Chiller
What manufacturer .........
RE: Oil Loss and Recovery Problem in Centrifugal Chiller
Unlike R-134a, however, R-123 first had serious Threshold Exposure Limits (why SCBA's are needed for leaks), and is still not free from Ozone Depleting Capability. However, once the lobbyists for ASHRAE and EPA tooled up, now we have ASHRAE Std 15 requirements that force refrigerant leak detectors and emergency ventilation in both cases, and the EPA "recognized" that stop-gap refrigerants were OK. Or, that the potential for high-pressure leaks of R-134a was just as dangerous as the health effects from R-123 (no one pointed out that R-22 had been around for decades). Eventually, even "Global Warming Potential" labeling was applied to R-134a cans in the Auto Parts Store - a perverted success of the lobbying effort.
It is interesting to note that global warming potential labeling has nothing to do with the R-134a gas itself. However, the refrigerant process with R-134a is slightly less efficient - inherently - so its use in refrigeration machines burns more energy which causes the release of more CO2 at the power plant(!), hence global warming. So, the can is labeled as such because of this seriously stretched logic (not really true anymore, anyway).
Meanwhile, releasing a can of R-134a into the atmosphere has zero effect on health, zero effect on Global Warming, and zero effect on the ozone.
It's a funny political world we live in. NOT.
Anyway, to answer your question - yes, there are some Carrier R-22 centrifugals around - maybe others I'm not aware of, too.
RE: Oil Loss and Recovery Problem in Centrifugal Chiller
RE: Oil Loss and Recovery Problem in Centrifugal Chiller
RE: Oil Loss and Recovery Problem in Centrifugal Chiller
RE: Oil Loss and Recovery Problem in Centrifugal Chiller
If the oil is being lost rapidly (within a one hour span), then an inspection of the internal
components of the machine may be necessary. The following components should be
inspected for leaks, missing parts, or proper clearances:
1. Oil reclaim check valve
2. Demister vent line filter
3. High speed thrust assembly o-rings
RE: Oil Loss and Recovery Problem in Centrifugal Chiller
We have opened the machine and replaced the mechanical seal on the rear end bearing, the high speed shaft seal and the thrust bearing oil rings.
I already checked the oil reclaim check valve also, its fine.
I did not checked the Demister vent line filter, may be i will have a check for this as well...
Anything more to solve this problem from the experts is highly appreciated.
The Machine is 19FA Carrier Model.
Thanks..