3 phase compressor will not pump down

[R12rules]

Originally posted by bmf

Originally posted by R12rules
I have personally removed ALL my hoses valve core depressors. Maybe one or two hoses still have one.

I have no use for them.
I use those brass check valves which screw onto the ends of the hoses. That way I can recover the charge from the hi side into the lo side when I am getting off a system.

A lot of guys dont bledd off from hi to lo and lose that amount of refrigerant.


(just running my posts up)

i do this also but i still have my depressers in

I ran a test on passing gas.

First I passed gas into a system with the cores and then without the cores.

Guess what?
The cores slow the gas down going thru the charging hoses!
Well duh!

So now, I carry a pair of those $40 brass valve core removal tools and my hoses dont no mo have those valve core depressors in the ends!
In place of the built in depressors, I use those brass accessory valve core depressors with the built in check valve.
I dont lose no mo charge.
I dont burn no mo fingers.
And I dont pollute the environment thru the passing of gas.
Well .... except for when .... (I pass the gas)...

[fitter33]

Hey R-12 you working yet?

fitter33

[jemair]

If it has an oil separator the float in the separator is probably stuck open. I just replaced one with this problem only two weeks ago. At defrost pump down, compressor could only pull down to about 8 p.s.i. but as soon as I front seated compressor suction service valve there was no problem pumping down the compressor itself.

[kevin1313]

[/B][/QUOTE]
I used to be like you. No use for core depressors. But I am in HVAC now, and those damn units do not come with access service valves, just schrader ports. I hate them. But I am like you. Still no depressors, I use the brass checks. [/B][/QUOTE]

Moving up in the game ehhh????