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11-03-2008, 03:33 AM #5
Re: TXV's To Adjust or Not to Adjust - That is ....
Originally Posted by taz24
If the valves are properly selected for the installed application, then by all means check the superheat. I think you will find they are pretty darn accurate with the factory setting.
I think I may have started this by saying don't adjust the TXV's. I will stand by that comment.
In practice what I mean is don't try adjusting the valve on a service call. It either works or does not. If it has failed then change it.
Too many people adjust these to get some desired effect such as higher or lower suction pressure, trying to get rid of bubbles in a site glass, or heaven knows what else.
When you truly do have to adjust a TXV it is usually because someone else was there adjusting it before you.If all else fails, ask for help.
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