Liebert Challenger 3000

Component Operation and Maintenance6.4.6 Air Cooled CondenserRestricted airflow through the condenser coil will reduce the operating efficiency of the unit and canresult in high compressor head pressure and loss of cooling.Clean the condenser coil of all debris that will inhibit air flow. This can be done with compressed airor commercial coil cleaner. Check for bent or damaged coil fins and repair as necessary. In winter, donot permit snow to accumulate around the sides or underneath the condenser.Check all refrigerant lines and capillaries for vibration isolation. Support as necessary. Visuallyinspect all refrigerant lines for signs of oil leaks.Checking Refrigerant Charge (Lee–Temp/Flood Back Head Pressure Control)The system refrigerant level must be checked periodically. To do so:1. Adjust temperature setpoint in the unit so that the compressor will run continuously.2. The refrigerant level is visible through two sight glasses on the receiver and will vary withambient temperature.a. 40°F (4.4°C) and lower — Midway on the bottom sight glass.b. 40 to 60°F (4.4 to 15.6°C) — Bottom sight glass should be clear with liquid.c. 60°F (15.6°C) and above — Midway on the top sight glass.3. Return temperature setpoint to desired number.Figure 9Outdoor fan/condenser configurationFAN SPEED CONDENSERElectric servicesupplied by others* BSecure each leg to condenserframe at all points shown usinghardware provided.Liquid lineHot gas lineLEE-TEMP CONDENSERLee-Temp heater padconnection box* BHot gas lineLiquid lineElectricservicesupplied byothers*B - Inverted traps are to be field-supplied and installed (typ). When installing traps, provideclearance for swing end of access door. Traps are to extend above base of coil by aminimum of 7-1/2" (190 mm).48