Results 1 to 14 of 14
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01-02-2006, 12:28 AM #1
Whats the prefered solenoid valve location
Is it ok to locate a solenoid valve in the refrigerated space next to the evaporator? Such as in the case of a small unit cooler for a reach-in. What are the prefrerred locations for remote installations as well as self contained situations. Ken
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01-02-2006, 12:53 AM #2
Re: Whats the prefered solenoid valve location
I would suggest the solenoid valve be located close to the expansion valve. With the valve close to the TXV, the amount of refrigerant pumped down is limited to the evaporator and the suction line.
If the solenoid valve is close to the receiver, the entire liquid line is pumped out which could take longer.
For small installations such as reach-in cabinets, I don't think the location matters.
In either event, I would suggest the use of a waterproof solenoid coil.
Whose valves are you using?
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01-02-2006, 06:53 AM #3
hi
yes ,,i beleve that the pumpdown take less time with the solinoid valve be behind evaporator,,,but a disadvantage came here ,,that it is difficult to maintain the s.v. , watching its operation ,
and with relative of this position , the sightglass that must be put after the s.v. ! how can be watched if it located neer evaporaror?
in the small walk-in the s.v. can be located neer evap.
but in the big once , the s.v. must be neer our hands
thanks
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01-02-2006, 07:45 PM #4
Re: Whats the prefered solenoid valve location
Whats a 's.v.'?
Is it sight glass?
If so the s.g. is normaly fitted to the cond unit. I dont think fitting a s.g. after a solinoid is a good idea, It will be subjected to freezing when the solinoid shuts and the cond unit pumps down.
It may crack the glass.
ChillinIF AT FIRST YOU DON`T SUCCEED.
DESTROY ALL EVIDENCE THAT YOU TRIED!
and go get a cuppa
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01-02-2006, 07:54 PM #5
Re: Whats the prefered solenoid valve location
I asume SV is Solenoid valve
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01-02-2006, 08:06 PM #6
Re: Whats the prefered solenoid valve location
I asume SV is Solenoid valve
ChillinIF AT FIRST YOU DON`T SUCCEED.
DESTROY ALL EVIDENCE THAT YOU TRIED!
and go get a cuppa
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01-02-2006, 09:42 PM #7
Re: Whats the prefered solenoid valve location
Originally Posted by US IcemanIt's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.
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02-02-2006, 12:16 AM #8
Re: Whats the prefered solenoid valve location
In either event, I would suggest the use of a waterproof solenoid coil.
Whose valves are you using?Last edited by kengineering; 02-02-2006 at 12:21 AM. Reason: Added quote to post.
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02-02-2006, 12:25 AM #9
Re: Whats the prefered solenoid valve location
My supervisor insists that the cold will cause malfunction of the valve
The valves get cold every time the system goes through a pump down cycle.
I use the Sporlan components for any small project I am involved in. During my years as a service tech I had much better results with no problems when using Sporlan products.
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02-02-2006, 01:01 AM #10
Re: Whats the prefered solenoid valve location
Thanks Iceman.
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02-02-2006, 08:03 PM #11
Re: Whats the prefered solenoid valve location
My supervisor insists that the cold will cause malfunction of the valve.
Just make sure they are water-proofed and you should have no problems.
ChillinIF AT FIRST YOU DON`T SUCCEED.
DESTROY ALL EVIDENCE THAT YOU TRIED!
and go get a cuppa
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02-02-2006, 11:50 PM #12
Re: Whats the prefered solenoid valve location
Just make sure they are water-proofed and you should have no problems.
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03-02-2006, 06:42 AM #13
Re: Whats the prefered solenoid valve location
Well, that the cable entries can widhstand a humid environment and you install the valves the correct way.
For example the Danfoss valves: the old coils had to be fixed with a top cap with a rubber O-ring in it.
If the valve is standing right, then you don't need tho fix this coil and you see it often installed this way.
But water can then enter between the valve spindle and the coil and during a longer standstill in freezing conditions, it can damage the spindle.
The coils are no made out of one piece (included the extruded top cap) and they click on the valve now so that it is always sealed.
I heard Danfoss modified this coil due to the freezing problems.It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.
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04-02-2006, 12:58 PM #14
Re: Whats the prefered solenoid valve location
Originally Posted by Marc O'Brien
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