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SalCange
11-19-2009, 10:12 AM
Hey guys, new to this website. Been in the field for about a year now. Every tech i've asked this question to has never come across this has never had to do this, so please help!


When pumping down a heat pump, should it be done with the reversing valve energized or not(with OD temp at 40degrees)? And would i attach the low side of my gauge to to common suction port or not?
davefr
11-19-2009, 10:17 AM
It's done in A/C mode so the system packs most of the refrigerant back into the condensor.

Posting "how to" details would violate site rules.
SalCange
11-19-2009, 11:13 AM
Is there a place on this website where techs can get info from other techs?
beenthere
11-19-2009, 11:53 AM
Is there a place on this website where techs can get info from other techs?

Yes. It requires Pro Membership though to access it.

Get your post count up to 15, and apply for Pro Membership.
Use this link (after you have 15 post) Apply for Pro Membership (http://hvac-talk.com/vbb/showthread.php?threadid=116113)

Once accepted, you have access to the pro tech forums. Where you can ask and get answers to technical questions.

Plus, you also have access to the Pro Educational Forums.

All of it is free.

Thank you, for your cooperation.
SalCange
11-19-2009, 12:01 PM
Thanks for the info!
vstech
11-19-2009, 12:22 PM
Hey guys, new to this website. Been in the field for about a year now. Every tech i've asked this question to has never come across this has never had to do this, so please help

I have a problem with this... have none of the techs you've asked ever pumped down a heatpump?

if you think about what you are trying to accomplish with a pump down, it will make sense.

if you know the refrigerant path in both modes, just look at the pipes, and see what is required.
SalCange
11-19-2009, 12:48 PM
Apparently not at 40DEGREES..
bothomas
11-19-2009, 10:17 PM
Temp doesn't matter. I would advise learning more about how the refrigerant system works. I'm not bashing you, but once you understand more about how it works you will understand heat transfer so much better and it will help you tremendously in the future when you are diagnosing systems. And you will look back and say " well of course it has to be in the cooling cycle!"