how to properly charging system

[kefah]

hi
after vacuuming system
if i want to charge it
what is the best way
as example
if i have 2 ton window type ac and r22
some people say
i must charge it with liquid in the beginning then after turning it i must charge it with vapor only
other say i must charge it with vapor when unit is off
then after turning on it i can charge with liquid and vapour
so what is the properly way to charge ac
others say

[install monkey]

http://www.refrigeration-engineer.com/forums/showthread.php?33732-R22-charging&highlight=charging+methodd

[kefah]

sorry the link you put is dazed me
ok if you dont mind
i am doing this charging by this way
when unit is off i charge unit with liquid only by weight through suction line
then after turning on unit its suction pressure is 60 or 70 psi
and i found no need to add r22 because suction line is being very cold which mean unit has required quantity of *****
what is your opinion

[install monkey]

if you can fit gauges to both sides of the system let liquid in the high side until you cannot get any more in-observe the weight charged- system will stop taking in liq,shut gauges and start system- open low side and charge vapour slowly to finalise the charge- if needed you can add liquid in the suction line to get all the charge in but do it slowly .

sorry the link you put is dazed me
ok if you dont mind
i am doing this charging by this way
when unit is off i charge unit with liquid only by weight through suction line
then after turning on unit its suction pressure is 60 or 70 psi
and i found no need to add r22 because suction line is being very cold which mean unit has required quantity of *****
what is your opinion