Chonkski
Member
I'll try to post some pictures and info regarding the shims over the next few days.
If your unit is still holding 100psi after that amount of time it's perfectly kewl.
I don't like using the over pressure trip as a test since it stresses the seals more than you need to.
Suggestions:
First, carefully remove the original pressure gauges.
Place these on a large concrete surface. Take a large, (at least 5 pound) hammer and beat the gauges into a fine powder.
Scream a lot. Throw powder away.
Replace gauges with decent units.
A simpler test as follows:
Connect an air compressor to the inlet port, open inlet valve, close the outlet valve and pressurize the unit to 100 psi.
I prefer to use a separate valve on the line from the compressor to the Appion and leave the Appion inlet valve open.
Close the air comp-Appion valve and wait.
If the Appion inlet and outlet gauge drop quickly (a few minutes) you have either a piston seal leak or a leak downstream of the cylinder exhaust valves. (rare, but the condenser could have a leak)
If the exhaust pressure holds and the inlet gauge drops, you have a leak somewhere before the inlet valve, either a loose fitting or the inlet valve on the front panel is leaking.
Windex makes a great leak detection fluid in a pinch.
If the pressure drops quickly, leave the valve from the air compressor to the appion open and listen. (make sure the room is quiet)
Wiggle the valve knobs on the front. Sometimes these fuckers leak.
If you hear a muted hiss from inside the appion, open it up and re-connect the air compressor. Spray some windex on the fittings and watch carefully. You'll usually find the leak.
These things were not designed to be leak proof, a small amount of leakage past the piston seals will happen.
RB
I have been testing my promax this way since I have read this. And brand new out of the box it never held pressure on the inlet side but it would hold(slowly go down) on the outlet side.
If I close the inlet side, the outlet side will hold for hours. It has been like this from the start. Is the promax different in some way?