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R135a hi/lo side pressures? '99 Max GLE
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G@somewhere.home Jim G
May 29, 2006, 7:42:56 PM5/29/06
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What are the high and low side refrigerant pressures for my Max? My son has
a manifold. I know the quantity should be about 1.41 lbs.
a manifold. I know the quantity should be about 1.41 lbs.
Jim G
error404
May 29, 2006, 9:59:27 PM5/29/06
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Ya gotta weigh the stuff as you can't determine proper pressures merely
from gagues like the R12 days. With the smaller amounts of refrigerant
the over/under charge by percentage is critical. The variable
compressor compensates to provide spec pressure regardless of amount,
to a point. Best to evacuate and charge with measured weighted amount.
from gagues like the R12 days. With the smaller amounts of refrigerant
the over/under charge by percentage is critical. The variable
compressor compensates to provide spec pressure regardless of amount,
to a point. Best to evacuate and charge with measured weighted amount.
A good shop has a machine that will pull the old stuff out, weigh it,
filter it, and then replace / replenish it for maybe 40 bucks. All
automatic and unattended. Might take 30 minutes.
Or you could buy a can and a hose & just guess. While you're there,
price a new compressor in case your guess is off the mark.
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