Carrier 40GRQ Owner's Manual

Also see for 38GRQ: Owner's manual Installation instruction

Contents

Leakage detection6. Tighten the screw caps of valves and refrigerant charging vent.7. Reinstall the handle.1. With leakage detector:Check if there is leakage with leakage detector.2. With soap water:If leakage detector is not available, please use soap water for leakage detection.Apply soap water at the suspected position and keep the soap water for morethan 3min. If there are air bubbles coming out of this position, there's a leakage.Vacuum pumping1. Remove the valve caps onthe liquid valve and gasvalve and the nut of refri-gerant charging vent.2. Connect the charging hoseRISLH]RPHWHUWRWKHUHIULgerant charging vent of gasvalve and then connect theother charging hose to thevacuum pump.2SHQWKHSLH]RPHWHUFRPpletely and operate for10-15min to check if theSUHVVXUHRISLH]RPHWHUUHmains in -14.5 PSI (-0.1 MPa).4. Close the vacuum pumpand maintain this status for1-2min to check if the pres-VXUHRISLH]RPHWHUUHPDLQVin -14.5 PSI (-0.1 MPa). If the pressure decreases, there may be leakage.5HPRYHWKHSLH]RPHWHURSHQWKHYDOYHFRUHRIOLTXLGYDOYHDQGJDVYDOYHcompletely with inner hexagon spanner.Use vacuum pumpliquid valvegas valverefrigerant chargingventnut of refrigerantcharging ventvacuum pumppiezometervalve capLo Hiinner hexagonspanneropenclose-34-