Original message
| facman
 |  "York YCWS 80 Chiller"
, posted Wed 30 Nov 21:53  
Hi all, I have a York Chiller that is suffering from an un-loading problem associated with the slide control valve. I have had York change the Capacity Control Valve Solenoid, this did not fix the problem. York have advised that the compressor needs to go to Singapore for repair, this I find hard to believe!! Does anyone out there know what is preventing the slide control valve allowing the compressor to reduce its load?
Everything is fixable
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Replies:
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| harpo
| "Re(1):York YCWS 80 Chiller" , posted Fri 2 Dec 19:18
that design works on the solinoid allowing pressure into the load chamber and make the compressor load up.seems for some reason it is being held and i know that all the bleed off of that chamber is an "fixed"orifice that has nothing to do with the solinoid movement...factory guy said back when they first came out you have to see 40 steps of loading before the slide start to move(load)due to this "fixed" bleed off.could be a piece in the bleed off...how was the filter inside that compressor
It ain't going to get any lighter looking at it!
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| | facman
| "Re(2):York YCWS 80 Chiller" , posted Fri 2 Dec 20:19:
The filter on this unit is new. When the unit starts it goes through its star/delta phase for the drive motor, it then goes directly to full load, this is indicated on the panel display I have also confirmed the current draw on the supply cabling. The panel is indicating slide valve steps of 20 - 25 which corresponds to the leaving chilled water temp of 7deg/C. I have had the compressor apart and checked all oil/gas galleries and passages and founf no blockages or obstructions. I am coming to the conclusion that factory may leave out a restriction orifice or not completly drilled a passage way. Cheers Brad (Facman)
P.S. If anyone knows the dimensions and the location of the restrictor orifice within the oil passages, I would greatly appreciative of any knowledge you could pass on.
Everything is fixable
[this message was edited by facman on Sun 4 Dec 22:24] |
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