1991 Beaver Contessa Dash AC

[jdunes]

Hi,

I was wondering if anyone knows where to find the information on how much refrigerant the dash ac takes. I have read every manual I have and no information is given. It was retrofitted at some point to 134a. I would like to recharge the system but dont wont to overfill. It has a Cat 3116 engine.

Thanks

Jason

[stumpnc]

It will need to be weighed in. And adjusted according to temperature and pressure

[richardgood]

A basic charging kit comes with a suction line pressure gauge. If you read the instructions, you can charge it till your suction line pressure is in the desired range. If you have a receiver with a sight glass, you can charge it till all bubbles in the sightglass disappear. Weighing in to a production car where the weight of refrigerant required is a known quantity will work. You may not find a charge weight for your old motorhome though, so suction pressure may be your best bet.