Connect the center hose on the charging manifold to the refrigerant tank.
Loosely connect the low pressure charging hose to the low pressure (suction)
Open the refrigerant tank valve slightly to purge air from the charging hose.
Tighten hose connection at the low pressure (suction) service valve.
Position mode selector switch to COOL and the temperature selector switch to
Do not turn air conditioner on when system is completely discharged.
Damage to the air conditioner may result.
On cold days, it may be necessary to place refrigerant drum in
container of warm water not to exceed 120F (48.9 C).
b. CHARGING PROCEDURE-SYSTEM COMPLETELY DISCHARGED.
Open the low pressure service valve to full open position.
When adding refrigerant use extreme care to avoid adding refrigerant
to the system too fast. Slugging and damage to the compressor could
W h e n e v e r available, u s e recycled refrigerant for charging the
SLOWLY open the refrigerant tank valve one full turn.
Closely watch the low pressure manifold gauge. When the pressure stops
increasing, turn the air conditioner ON and allow the unit to operate while continuing to charge
Continuously observe the sight glass. When bubbles no longer appear in the
sight glass, the system is charged.
Close the refrigerant tank valve.
Close the low pressure (suction) service valve.