Community Forums

hrw · 07-17-2016, 06:19 PM

Curious about air conditioning. 6 psi. The otr ac is a bit light. Charging the system. Must be an easy process?

CharlesinGA · 07-17-2016, 09:34 PM

You lost me and I've done a fair amount of automotive AC work in my time. Can you explain better what you have and what you want to do?

Charles

mike brez · 07-18-2016, 04:52 AM

I think he is asking how to charge his over the road a/c

smlranger · 07-18-2016, 05:16 AM

If you are asking what refrigerant charge is recommended for your automotive AC, my Allure has a sticker on the hydraulic fluid reservoir in the engine compartment with that info. Mine says 6.0 lbs.

hrw · 07-18-2016, 05:45 AM

Well, what was asking and did certainly not explain myself was, the refrigerant recommended is the 134. Now when the gauge is on the blue valve without the compressor running the pressure is about 65lbs. Is this normal? Then with compressor running and a/c cranked to max the pressure is about 4lbs. I'm guessing I should add a bit of refrigerant?

TQ60 · 07-18-2016, 07:49 AM

That all depends on ambient temperature.

There are charts based on type that show based on ambient temp what the static send running pressures should be.

You are connected to low side so it will drop when running.

To be best served you need booth high and low side pressures along with ambient temperature.

Also confirm your water flow valve is fully shutting off.