littel help here

[m7md]

heloo there i dont know if this is the right pleas to ask for help :S
anyway..
how do i know the right amount of gas for any cooling system ?
i'm haveing so much Headache evry time i use 404a so
how can i know the right amount for 404a system

[charlie patt]

if it has alegend plate that tells you the weight if it has a sight glass go by that if neither charge till suction line slightly sweating and charge as aliquid......

[tonyhavcr]

go to Refrigeration 101 and Read it will tell you both how to charge any system

[Brian_UK]

As Tony says above read here...

http://www.refrigeration-engineer.com/forums/showthread.php?t=19701

[m7md]

thank you sir :)