Liebert Deluxe System/3 - DX

Air Cooled Models3.5.4 Charging1. Make sure unit is OFF and that jumper is removed on Fan Safety Switch.2. Connect a set of manifold gauges to the refrigerant drum and to the receiver at the rotalock valve.Purge the hoses.3. Open the rotalock valve and fill the receiver with liquid refrigerant per Table 26.4. Close the valve and disconnect gauges.5. Start the compressor and recheck the refrigerant level. If the level has dropped, recharge withvapor through the suction port.6. Replace all fuses (or close circuit breakers) except reheat and humidifier.7. Connect refrigerant charging hose to suction port of compressors and purge with Freon.8. To energize the solenoid valves, use manual override jumpers (on SM) or test outputs (on AM andAG).9. Charge with vapor until the refrigerant level is in accordance with 3.5.5 - Refrigerant Level.3.5.5 Refrigerant LevelOn each receiver at the condenser are two refrigerant-level sight glasses. Refrigerant level will varywith outside temperature.Check refrigerant level after the unit has been on for at least 15 minutes.40°F (4.5°C) and belowBottom sight glass is 3/4 full40°F to 60°C (4.5°C to 15.5°C)Bottom sight glass is full60°F (15.5°C) and aboveTop sight glass is 3/4 fullFigure 22 Lee-Temp control condenserEntering Hot Gas Line (typ)Returning Liquid Gas Line (typ)Lee-Temp Receiver TankSL-10061-6NOTEThe following materials are supplied by Liebert for each circuit (shipped loose with condenser)for field installation: insulated Lee-Temp storage tank, head pressure control valve, checkvalve, rotalock valve, two sight glasses and a pressure relief valve. All other piping to besupplied and installed by others.34