User manual LG WM5031

[. . . ] website http://www. lgservice. com LG LG Room Air Conditioner SERVICE MANUAL MODEL: ACQ058PL KG5200ER LW5200ER WG5200ER WG6000R KG6000R M5404R WG5200R M6004R HBLG6000R HBLG5200E ACQ052PK LW7000R WM-5031 LW050CE LWJ0515PAG LW5200R CAUTION · BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. · ONLY FOR AUTHORIZED SERVICE PERSONNEL. CONTENTS 1. PREFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1. 1 FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Solder the pinch-off tubes with service valves. After completing the above procedures, the valve must be closed and left in place on the system for any subsequent procedures. Connect the vacuum pump, as illustrated in figure 20A. 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. [. . . ] Check the compressor overload if externally mounted. (If the compressor temperature is high, remove the overload, cool, and retest. ) Check the voltage. If voltage is not within these limits, call an electrician. (If the compressor temperature is high, remove the overload, cool, and retest. ) Overload Compressor cycles on overload. Voltage Overload --24-- COMPLAINT Compressor cycles on overload CAUSE Fan motor REMEDY If not running, determine the cause. [. . . ]