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Old 07-25-2018, 02:52 PM   #1
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Location: Reedsport, Oregon
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1991 Beaver Contessa Dash AC

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
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Old 07-26-2018, 04:15 AM   #2
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It will need to be weighed in. And adjusted according to temperature and pressure
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Old 07-28-2018, 11:03 PM   #3
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R134a charging

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.
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