R134 Charge Chart Range / Eagle Carrier Comp.

[LegalEagle82]

Anyone know the right charge range for a converted r134 system in an Eagle with the carrier compressor.
I'll be working in 70-80 degree weather.   Any suggestions on what to do or not to do in the process.  I understand to vacuum the system down and see how it holds, but I need to know my fill charge.

I have a house unit and roof unit that runs off the gen set, but I still like the idea of bus air too. 
The system currently has a low charge, but not empty.

Thanks  Evan

[Nick Badame Refrig/ACC]

Hi Even,

The system should have a sight glass in the condencer compartment. While the system is running, look at the sight glass and determine the amount of bubbles passing through. Now, you can get real close to proper charge by filling with R-134A until the sight glass clears. This procedure "if overcharged" can cause
Compressor failure, faulty seals, or bodily harm. Please, Do not perform this without proper expierence!
Always fill the system in a liquid state. [ bottle upsidedown with all blended gasses]

The proper way would be to Scale in an exact charge from a 30 in. vacuume while the system is off.
Eagles usually hold 15lbs 4ozs. but I have to doubble check....

Nick Badame

[Jerry32]

I would like to do the same to my 102a3 but where can I get large bottles of 134. Would it be better to use R22 ?? Is the compressor oil compatiable with 134.?? I have guages and pump and have done cars and my motorhome. Jerry

[Nick Badame Refrig/ACC]

Hi Jerry,

Right now R134A is cheaper then R-22.  Sams Club has either 25 or 30 lb bottles. [not sure]

If your system is empty, it would be a good idea to proform a leak test. You can do this with Niotrogen, or

if you have the proper test equipment, you can use the 134A. [bubble soap also works but not in a vacuum]

Good Luck
Nick-

[LegalEagle82]

Nick,

Thanks, do you know what range on the gauges I should have. (low/high)
I sent an email to welch too, I'll post any response I get for all.

Tank of R134 was about 65-68 a month or so ago.

[DrivingMissLazy]

"I understand to vacuum the system down and see how it holds"

Nick, is this really appropriate if there is still gas in the system?

Richard

[RTS/Daytona]

Hi

#1 if you don't know what your doing with a/c - don't do it - it can be very dangerous

With that said here's some data that I have in my A/C notes

Ambient temperature is measured 2 inches in front of the condenser. 

ambient temp 070-080F  (low side 16-29psi)  (high side 115-200psi) evaporator temp 33-50F
ambient temp 080-090F  (low side 19-39psi)  (high side 140-235psi) evaporator temp 33-60F
ambient temp 090-100F  (low side 25-43psi)  (high side 165-270psi) evaporator temp 40-65F

compressor should cylcle off at 20 psi low side

Here's some additional VERY HELPFUL info -> http://www.aircondition.com/wwwboard/current/44954.html
and
http://www.ackits.net/index.cfm?fuseaction=Chart
and
http://www.carcare.org/Climate_Control/adding_refrigerant.shtml

Pete RTS/Daytona