Haier AU282XHERA Installation Manual

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Contents

Haier AU282XHERA Installation Manual Manual pdf 14 page image

12In case of gas leakage, tightenparts of pipe connection. Ifleakage stops, then proceed 6steps.9.52mm(3/8")6.35mm(1/4")9.52mm(3/8")6.35mm(1/4")9.52mm(3/8")9.52mm(3/8")6.35mm(1/4")6.35mm(1/4")To indoor unit CTo indoor unit DTo indoor unit B2 way valve3 way valve To indoor unit A3 way valve2 way valve3 way valve2 way valve3 way valve2 way valvePurging method: to use vacuum pump2 way valve3 way valve900Service port900 for 6 sec.6 .Detach the charge hose from the service port, open 2-way valve and 3-way. Turn the valve rod anticlockwiseuntil hitting lightly.Liquid stop valve2 way valve3 way valveGas stop valveGauge maifold(R410A)Vacuum pump(R410A)OpenClose2 way valve3 way valve662 way valve3 way valveValve rod capValve rod capService port cap1 .Detach the service portis cap of 3-way valve, the valverod's cap for 2-way valve and 3-way valves, connect theservice port into the projection of charge hose (low) forgaugemanifold. Then connect the projection of chargehose (center) for gaugemanifold into vacuum pump.2 .Open the handle at low in gaugemanifold, operatevacuum pump. If the scale-moves of gause (low) reachvacuum condition in a moment, check 1 again.3 .Vacuumize for over 15min. And check the level gaugewhich should read -0.1MPa (-76 cm Hg) at low pressureside. After the completion of vacuumizing, close thehandle 'Lo' in the vacuum pump. Check the condition ofthe scale and hold it for 1-2min. If the scale-moves backin spite of tightening, make flaring work again, thenreturn to the beginning of 3 .4 .Open the valve rod for the 2-way valve to and an angleof anticlockwise 90 degree. After 6 seconds, close the 2-way valve and make the inspection of gas leakge.5 .No gas leakage?If it does not stop gas leakage, dischargewhole refrigerants from the service port.After flaring work again and vacuumize,fill up prescribed refrigerant from the gascylinder.7 .To prevent the gas leakage, turn the service ports cap,the valve rodis cap for 2-way valve and 3-way's a littlemore than the point where the torque increases suddenly.CAUTION: If the refrigerant of the air conditioner leaks,it is necessary to make all the refrigerant out. Vacuumizefirst, then charge the liquid refrigerant into air conditioneraccording to the amount marked on the name plate.8 .Take the same steps from 1 to 7 for each ways toensure a completely vacuum for the whole system.