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20-05-2010, 10:28 AM #1
refrigerant dryer trips on oil pressure
Dear Sir ,
Our refrigerant dryer trips on low oil pressure after one hour from starting the system. After tripping oil level shows very low and then after some times level comes up. Pls.suggest resolve this problem.
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20-05-2010, 11:17 AM #2
Re: refrigerant dryer trips on oil pressure
Oil pump, traps, refrigerant charge are good starting points.
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20-05-2010, 12:39 PM #3
Re: refrigerant dryer trips on oil pressure
Here's a link to a previous post that should help you out.
http://www.refrigeration-engineer.co...ad.php?t=23829Thousands of HVACR manufacturers links! Visit: www.hvacrinfo.com
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22-05-2010, 05:08 AM #4
Re: refrigerant dryer trips on oil pressure
Hi,
One of the problems could be liquid flood back to the compressor even small amount.
When liquid refrigerant is present in the crankcase, it evaporates and creates a lot of vapour. This vapour blocks the oil pump inlet and oil is not circulated. When oil pressure switch delay is passed then it trips the compressor.
Check the superheat and see if you have liquid flood back.
CheersEven Einstein Asked Questions
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