User manual GOLDSTAR GWHD6500R SERVICE MANUAL

[. . . ] ROOM AIR CONDITIONER SERVICE MANUAL CAUTION BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. MODEL: GWHD6500R , GWHD6500RY6 CONTENTS 1. PREFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. 1 FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. 2 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Slowly open manifold valves A and B with two full turns counterclockwise and leave the valves closed. The vacuum pump is now pulling through valves A and B up to valve C by means of manifold and the entire system. CAUTION : If high vacuum equipment is used, just crack valves A and B for a few minutes, then open slowly with the two full turns counter-clockwise. This will keep oil from foaming and being drawn into the vacuum pump. Operate the vacuum pump for 20 to 30 minutes, until 600 micron vacuum is obtained. Close valves A and B and observe vacuum gauge for a few minutes. A rise in pressure would indicate a possible leak or moisture remaining in the system. With valves A and B closed, stop the vacuum pump. 6-4. Remove the hose from the vacuum pump and place it on the charging cylinder. Discharge the line at the manifold connection. The system is now ready for final charging. Rotary compressor systems are charged from the high-side. If the total charge cannot be put in the high-side, the balance will be put in the suction line through the access valve which is installed as the system is opened. Connect the charging cylinder as shown in figure 20B. With valve C open, discharge the hose at the manifold connection. Open valve A and allow the proper charge to enter the system. If more charge is required, the high-side will not take it. With the unit running, open valve B and add the balance of the charge. Do not add the liquid refrigerant to the lowside. Watch the low-side gauge, allow pressure to rise to 30 lbs. Turn off valve B and allow the pressure to drop. Repeat steps B and C until the balance of the charge is in the system. [. . . ] Replace the thermistor if the circuit is open. Loose set screw Worn bearings Compressor will not run, fan motor runs. Voltage Wiring Thermistor Capacitor (discharge capacitor before servicing. ) Compressor Check the capacitor. Replace if not within ±10% of manufacturer's rating, replace if shorted, open, or damaged. Check the compressor for open circuit or ground. If open or grounded, replace the compressor. [. . . ]