Figure 5-8. Refrigerant Charging (Total System)
(6) Set refrigerant tank to deliver liquid only.
(7) Place refrigerant tank on an accurate scale to measure and record weight.
Never introduce liquid refrigerant into the suction shut off valve This can cause damage to the compressor.
(8) With system shutdown, open refrigerant tank, pressure gauge, and charge valves Allow liquid refrigerant to
enter system until tank weight has decreased by 10 pounds (4.5 kg) or until system pressure has equalized,
whichever occurs first.