Charging by liquid/Best practice

[timberlinemd]

This forum has a wealth of knowledge, and I haven't even been allowed into the 'pro' section yet.

After an evacuation and charging by weight, is it OK to charge 85%-90% by liquid through the suction and liquid lines at the same time. Unit is not running. Wait till refrigerant settles down, then start unit and finish with vapor?

Somewhere here I read that it was hard on the compressor?

[Harmelo]

Charge liquid on the liquid line, if it stops taking walk it in through the suction line just dont exceed 10psi while doing so...

[Harmelo]

And dont forget to have your amp meter on that compressor while you walk liquid through the suction the compessor works harder just make sure it doesnt work to hard

[timberlinemd]

And dont forget to have your amp meter on that compressor while you walk liquid through the suction the compessor works harder just make sure it doesnt work to hard

Sound like this is done with a running compressor.
I would like to know if it is OK to charge thru the suction and liquid line at the same time when the compressor is NOT running.

[Mike19]

Sound like this is done with a running compressor.
I would like to know if it is OK to charge thru the suction and liquid line at the same time when the compressor is NOT running.

Generally I like to charge with liquid through the high side only when the compressor is off. The refrigerant will flash through the expansion device and fill the low side.

[ryan1088]

Generally I like to charge with liquid through the high side only when the compressor is off. The refrigerant will flash through the expansion device and fill the low side.

^^^^^

[timberlinemd]

Generally I like to charge with liquid through the high side only when the compressor is off. The refrigerant will flash through the expansion device and fill the low side.

Thanks!

[5thRoot]

If you throw liquid in the low side with the compressor off, there is a possibility the compressor will start with a crank case full of liquid, and that can be a scary situation.

[Harmelo]

Whoops... Read right over "the unit is not running" silly me.. Mike19 gave the best way as far as I know