Haier AC142ACBHA Operation Manual

Haier AC142ACBHA Operation Manual Manual pdf 20 page image

Installation procedures18If it does not stop gas leakage, dischargewhole refrigerants from the serice port.After flaring work again and vacuumize,fill up prescribed refrigerant from the gascylinder.Detach the charge hose from the service port, open3-way valve and 3-way. Turn the valve rodanticlockwise until hitting lightly.6In case of gas leakage, tightenparts of pipe connection. Ifleakage stops, then proceedsteps.No gas leakage?54Open the valve rod for the 3-way valve to and angle ofanticlockwise 90 degree.After 6 seconds later, close the 3-way valve and malethe inspection of gas leakage.3Vacuumize for over 15min. And check the level gaugewhich should read -0.1 MPa (-76 cm Hg) at lowpressure side. After the completion of vacuumizing,close the handle 'Lo' in gaugemanifold and stop theoperation of the vacuum pump.Check the condition of the scale and hold it for 1-2min.If the scale-moves back in spite of tightening, makeflaring work again, the return to the beginning of 3 .2Open the handle at low in gaugemanifold, operatevacuum pump. If the scale-moves of gause (low)reach vacuum condition in a moment, check 1 again.1Detach the service port's cap of 3-way valve, thevalve rod's cap for 3-way valve and 3-way's, connectthe service port into the projection of charge hose(low) for gaugemanifold. Then connect the projectionof charge hose (center) for gaugemanifold intovacuum pump.To use vacuum pump3 CloseCAUTION:If the refrigerant of the air conditioner leaks, it is necessary to makeall the refrigerant out, then charge the liquid refrigerant into airconditioner according to the amount marked on the name plate.78After attaching the each caps, check the gas leakagearound the caps.To prevent the gas leakage, turn the service port'scap, the valve rod'd cap for 3-way valve and 3-way'sa lottle more than the point where the torque increasessuddenly.2 OpenFor these models , the refrigerant is R407C.After connecting the piping, check the joints for gas leakage with gas leakage detector.CAUTION6Liquid pipeGas pipeGaugemanifoldVacuum pump3-way valve3-way valve9.52mm(3/8'')15.88mm(5/8'')Service port90903-way valve3-way valveAIR PURGING METHOD (TO USE VACUUM PUMP)77Valve rod capService port cap73-way valve3-way valveValve rod cap663-way valve3-way valve90 for 6 sec.4