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Not sure if you can bench test or isolate test an auto ac condenser


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luvconvertibles
New User

May 29, 2018, 6:21 AM

Post #1 of 4 (184 views)
Not sure if you can bench test or isolate test an auto ac condenser Sign In

New. I bought a new condenser last year. Installed it in sisters car, among other things in her ac system, recharged, still works well today.

I'm only posting a ? because I have exhausted myself looking for an answer.

Can you test a new condenser before putting it in a car? Or, can I test one on a car? Like isolate it from the rest of the ac system though, not test with ac system, just the condenser?

If there are'nt any ways to do it, how would you check a condenser the best you could? Some ways I've heard or seen on yt are to use laser temp gun at inlet and/or outlet ports, temp checks through out the front of the condenser while ac running. One way I saw was to throw it in a bathtub?

Thanks for any condenser testing info! Appreciate y'alls time!


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

May 29, 2018, 7:21 AM

Post #2 of 4 (177 views)
Re: Not sure if you can bench test or isolate test an auto ac condenser Sign In

No, there is no way to test it out of the car. It's even difficult to do in the car. It can only be judged on it's performance and even then things like fan performance, amount of accessible air flow from outside and sealing between the condenser and radiator.

The temp reading is somewhat helpful but not thoroughly accurate. One trick I use is feeling the temp of the liquid line. It should be warm to the touch but not hot. Even then the issue could still be air flow.

If you have an electric fan, turn the fan off for a minute and then back on while observing the pressure change will give you an idea how well it is working.



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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.



luvconvertibles
New User

May 29, 2018, 12:27 PM

Post #3 of 4 (158 views)
Re: Not sure if you can bench test or isolate test an auto ac condenser Sign In

Thanks for that! That's better than nothing.

Could you recommend what to look for when manually cutting off fan at condenser? Like when, how long, the low and high pressures differences, anything like that?

I put in entire new system and pressures and all numbers(at about 78 degrees ambient) seem ok, it's just an older car. That's all. Compressor new, evap new, lines, condenser, etc, etc, etc! Weighed correct amount of refrigerant. Drained oil from the new(not rebuilt) compressor & replaced w correct pag 46. That's all, just curious if I could make it colder.

Although she's not complaining at all. But mine is colder than hers, at least it feels that way to me, and mine is the factory set up still. We have same car, same year, same everything.


(This post was edited by luvconvertibles on May 29, 2018, 12:29 PM)


Hammer Time
Ultimate Carjunky / Moderator
Hammer Time profile image

May 29, 2018, 12:34 PM

Post #4 of 4 (154 views)
Re: Not sure if you can bench test or isolate test an auto ac condenser Sign In

Let the pressure climb to about 300 without the fan and then plug the fan back in. It should pull it back down by at least 75lbs if the system is working properly.



~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.







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