View Full Version : Cps micron gauge
06-25-2011, 07:17 PM
Using this gauge is a learning curve I take it. Today it held at 320 microns for a couple minutes. How long should you wait? There was a leak in the flare fitting of the evaporator.
I'm not too sure what you are asking... holding 320 microns. Was that the lowest reading you could achieve, or is that what it leveled out at from a lower reading? Pump isolated? The CPS seems to take a while to settle down, but it is a decent gauge. The time thing is subjective to what you feel confident with based on the system and your set-up.
Just my thoughts.
06-26-2011, 08:23 PM
Isolated the micron gauge with a ball valve. Gauge would not pull down below 320 microns but never ddoes. How can it hold at 320 microns and there be a leak that you can see after charging it up?
06-26-2011, 09:28 PM
pulling vacuums sucks (pun intended) too many variables
06-27-2011, 09:31 PM
I wait 30 mins. but it could be the meter you have. I find that paying a lot for a micron gauge makes all the difference.
06-27-2011, 09:46 PM
I had a supco v64 vac gauge, everything pulled down great and held. Then one day I pulled the gauge off the hoses to atmosphere and it hung at 375 micron for five minutes. The next day I ordered a BluVac, now I have to replace all my hoses, and rebuild my manifold as this thing responds so fast I see every little leak. ohh well I guess they were gettin up there anyways lol.
06-27-2011, 10:08 PM
I always pressure test with nitro to check for leaks. Then the micron gauge tells you when you're completely dehydrated. If it held good under pressure, rarely will they leak under a vac.
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