"Dr. Hardcrab" wrote in message
news
9s1f.7470$BU1.3123@trnddc06...
"Stormin Mormon" wrote
Happens when the system is opened for service.
O.K.
One of the complaints (which is unfounded) about R410A is that it operates
under a much higher pressure than R22. When the system is off, it's not
uncommon for the pressure of a 410 system to be at around 160 PSI.
Explain how air can get INTO the system when it is "opened for
service".....
If I recall, I carry a vacuum pump for that very problem!
Greg