[hvac52]

service freak

lets keep it simple. make sure vacuum pumps is good
new oil and good working pump, should pull down to 25
microns.by its self using micron gauge if system
cannot pull down to below 1000 microns
you have a leak. 500 to 1`000 microns moisture in system
blandoff at 450 microns rises 25 microns in 1 hour
system is tight make sure vacuum pump is big enough to
handle job.