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Thread: bitzer screw compressor fault
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30-04-2013, 04:41 PM #1
bitzer screw compressor fault
Dear friends
Why is the suction pressure rises with bitzer screw compressor starting.
This is a freez compressors rack for supermarket application.
When closing the tap down the compressor suction goes to vaccum.
thanks
yair
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30-04-2013, 06:40 PM #2
Re: bitzer screw compressor fault
Right rotation?
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01-05-2013, 05:05 PM #3
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01-05-2013, 07:26 PM #4
Re: bitzer screw compressor fault
May be he doesnt loading?
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02-05-2013, 09:29 AM #5
Re: bitzer screw compressor fault
Internal safety valve leaking from high to low side.
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02-05-2013, 09:58 AM #6
Re: bitzer screw compressor fault
dear friend
the safty valve is new we replace it .
we steel have the problem.
thaks,
yair
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02-05-2013, 10:11 AM #7
Re: bitzer screw compressor fault
dear friend ,
I checked and it looks normal unloading.
anyway on Starting there is a trend of moving high pressure towards the suction pressure .
thanks,
yair
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02-05-2013, 11:00 AM #8
Re: bitzer screw compressor fault
You've still got a bypass somewhere. Sometimes is installed on purpose to reduce the inrush current.