User manual LG DVR1000

[. . . ] 2 1. 2 SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. 3 SAFETY PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. 4 INSULATION RESISTANCE TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 1. 5 LOCATIONS OF CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Discharge the refrigerant by using a refrigerant recovery system. Remove 2 screws which fasten the condenser. After discharging the refrigerant completely, unbraze the interconnecting tube at the condenser connections. Re-install by referring to the procedures above. Figure19 2. 4. 2 EVAPORATOR 1. Discharge the refrigerant by using a refrigerant recovery system. After discharging the refrigerant completely, unbraze the interconnecting tube at the evaporator connections. Re-install by referring to the procedures above. --10-- 2. 4. 3 CAPILLARY TUBE 1. Discharge the refrigerant by using a refrigerant recovery system. After discharging the refrigerant completely, unbraze the interconnecting tube of the capillary tube. Re-install by referring to the procedures above. NOTES Replacement of the refrigeration cycle. 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. When the unit is operating correctly, use the pinch-off tool with the unit still running and the clamp on the pinch-off tube. Using a tube cutter, cut the pinch-off tube about 2 inches from the pinch-off tool. Use sil-fos solder and solder the pinch-off tube closed. Turn off the unit, allow setting for a while and then test the leakage of the pinch-off connection. --11-- Equipment needed: Vacuum pump, charging cylinder, manifold gauge, brazing equipment, pinch-off tool capable of making a vapor proof seal, leak detector, tubing cutter, hand tools to remove components and service valve. COMPOUND GAUGE MANIFOLD GAUGE B A CONDENSER (HIGH PRESSURE SIDE) SEE INSETS BELOW COMPRESSOR EVAPORATOR (LOW PRESSURE SIDE) CAPILLARY TUBE LO HI CHARGING CYLINDER A B EXTERNAL VACUUM PUMP B A C Figure 20A-Pulling Vacuum Figure 20B-Charging --12-- 3. INSTALLATION This air conditioner is designed with a button-down chassis so it can be easily installed in a window. 3. 1 SELECT THE BEST LOCATION 1. [. . . ] Replace the thermistor if the circuit is open. Blower 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. [. . . ]