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06-03-2013, 06:07 PM #1
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FYI , Biflow driers and Reversing valves.
I had an issue with a package A/C unit this week. In cooling pressures were normal , switch to heating and with in 10 seconds unit running in to vac . My thought was the expansion valve faulty but these were accurators and all moving and seals all ok. Next on the list was RV , what a mission to change (1 3/8 tubing)! the boss said i ll order one and you change it. I thought about it and asked about the bi flow filter could be blocked in one direction , No said boss.
So thought , ill just change filter first so i cut out the bi flow first and replacing and vac down the system , charge it up and run it , sure enough it was the filter check valve faulty , i could blow through one end but not the other.
Just something else to check out when diagnosing i quess.
Cheers Andy
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06-03-2013, 08:16 PM #2
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Re: FYI , Biflow driers and Reversing valves.
Very interesting! What make and model were the driers and what where they fitted too? Just had same problem...
http://www.youtube.com/watch?v=6pUZBi38rCM
Cheers JonMostly found in Oxfordshire, UK :)
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07-03-2013, 03:12 AM #3
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Re: FYI , Biflow driers and Reversing valves.
Hey Monkey, they were an emerson filter drier , not sure of exact details, 5/8 solder . The unit was a Temperzone package, New Zealand made.
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07-03-2013, 03:31 AM #4
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Re: FYI , Biflow driers and Reversing valves.
Just seen your video and the drier i replaced it with was a Sporlan ! dooh
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07-03-2013, 08:11 AM #5
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Re: FYI , Biflow driers and Reversing valves.
.. Forensic investigation at it's best. I see the core and felt pads had some discolouration. Maybe it was a good thing to have the bi-flow drier replaced at that time before further dramas developed.
Originally Posted by monkey spanners
Last edited by mikeref; 07-03-2013 at 08:13 AM. Reason: Unable to give you points..... or cheese. Sorry.
To the optimist, the glass is half full. To the pessimist, the glass is half empty.
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07-03-2013, 10:58 PM #6
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Re: FYI , Biflow driers and Reversing valves.
Interesting... Same size too, will be in contact with Sporlan to see what they have got to say about it. Originally Posted by AndyHX
Mostly found in Oxfordshire, UK :)
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07-03-2013, 11:02 PM #7
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Re: FYI , Biflow driers and Reversing valves.
Was surprised at the discolouration, system had a failed reversing valve which was change at same time as the driers. Originally Posted by mikeref
.. Forensic investigation at it's best. I see the core and felt pads had some discolouration. Maybe it was a good thing to have the bi-flow drier replaced at that time before further dramas developed. Mostly found in Oxfordshire, UK :)
