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Thread: 30HXC 126 - low load problems
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02-06-2010, 02:49 PM #14
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UA 100
It takes three people to do anything around here. Two do the work, one explains to the crowd of people who showed up when they seen smoke and flames.
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02-06-2010, 03:35 PM #15
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Many Thanks TGL can't understand why they haven't been fitted as standard over here. Will have to have a word with the factory i think.
Have a good weekend
Off to the pub for a couple of cold guinness
will drink your good health mate.

G.
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02-06-2010, 09:47 PM #16
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Montluel don't fit them, even so we can't use the HXC anymore because of MEPS, and we are having to use the 30XW instead.
A problem shared is a problem halved
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02-06-2010, 10:09 PM #17
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02-08-2010, 01:08 PM #18
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30 HXC update
Greetings again: So I turned the chilled water temperature on the valving that supplies the main AHU for the MCC to 56F for the weekend. Left the unit run with compressor ' B ' - CWSP on the chiller itself is 44F.
The unit looks as if it ran solely on B compressor all weekend, kept the MCC @ 60 F all weekend - when I got to it this morning, the values were as such -
EWT - 46.3 F
LWT - 42.9 F
unit capacity - 18% - ( NO HGV open )
FD - 6.2 psi
Half an hour later -
EWT - 47.0 F
LWT - 44.3 F
unit capacity - 32% - no HGV
FD - 6.2 psi
This unit is a 54% / 46% ( A / B ) configuration. The bottom oil sight glass is full on the B compressor, top is empty.
From past history, if I set the MCC temp. at the AHU to 68 F, the unit will run, short cycle, L/O on oil failure, and do the same thing to the lag compressor, then L/O the whole thing.
Any ideas?
Thanks
FreonguySuperheat and subcooling tell it all !



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