Manifold Hose Blowback - YJ Low Loss Fittings Don't Fit Rheem HP's - HVAC - DIY Chatroom Home Improvement Forum

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Old 05-16-2012, 03:34 PM   #1
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Manifold hose blowback - YJ Low loss fittings don't fit Rheem HP's

I wanted to check HP subcooling and other operating parameters this week. However my Yellow Jacket low loss hose couplings are too fat for Rheem RPNE HP service valves. I didn't want to take a chance and damage the valve threads or bend down the liquid line coming to the valve so used conventional hoses.

Blowback was probably a diminimus release of about 2oz of refrigerant from disconnecting my 6' high side hose. (yes, I used safety glasses and gloves!!)

I'll probably get some short ball valve hose adapters to have on hand for the next time.

When using ball valve hoses do you generally release the high side hose pressure through the manifold and into the suction line? (assuming the hoses are purged of air). If so isn't liquid refrigerant entering the compressor's suction side bad for the compressor? Or is it too small an amount to even worry about?

Or do you simply leave the hoses pressurized/closed until the next time and not worry about the slight reduction in refrigerant?



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Old 05-16-2012, 03:57 PM   #2
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Small amount of liquid at a slow rate won't harm a compressor.


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