I was vacuuming an 89 Suburban yesterday. I had a micron gauge where the low pressure switch attaches o the accumulator. Shut the pump and valves off at 380 microns. Gauge went down to 330 after things were shut off. Let the system sit for 25 minutes and it went up to 350.
Is it normal to see a decrease in microns after turning the pump off?
Micron Gauge
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Dgreen
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Re: Micron Gauge
yes, you'll be fine.