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Bruce L. Bergman (munged human readable) Bruce L. Bergman (munged human readable) is offline
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Default Refridgeration compressor question...

On Sun, 25 Sep 2011 09:34:20 -0400, "Stormin Mormon"
wrote:

Needs a hard start kit. Most refrigerator repair companies
have them. I fix refrig and freezers, and always have
SEVERAL on the truck.


That, and refrigeration compressors aren't supposed to be started
with head pressure on them - if you leave them off for a few minutes
the pressures will equalize naturally. That's why shop air
compressors have check valves to the tank, and an unloader line that
is vented when the pressure switch turns off - the tank retains
substantial residual pressure for hours.

You might need to rig the exact same system, get a pressure switch
with an unloader, and a check valve to the receiver.

The little round oveload on the outside of the compressor is there
specifically to pop off if you try short-cycling the compressor before
the load bleeds off. And it's on the outside so it can be replaced
when it goes bad - they do try to think ahead...

Refrigeration compressors are bad for airbrushes or painting - they
have a lot of oil carry-over that will wreck paint jobs with fish-eyes
if you don't filter it all out. The ONLY advantage to using one for
an air supply is when it has to be quiet - So you get a regular
oilless diaphragm compressor and a long hose, and put it out in the
garage where nobody cares about the noise.

And you have to install a sight glass to watch the oil level inside
the refrigeration compressor, or it'll seize up on you. You can do it
with the process tubes on the compressor can and some clear vinyl or
poly hose, but you need to know which two tubes to use, and how much &
what kind of oil it's supposed to contain...

-- Bruce --