Liebert Challenger 3000 with iCOM

Installation (Applicable to all Models)2.5.2 Humidifier Supply Water—Optional Infrared• 1/4" supply line; maximum water pressure is 150 psi (1034kPa)• Size humidifier supply line for 1 gpm (3.8 l/m), with a minimum water pressure of 20 psi (138kPa)• Do not supply de-ionized water to the humidifier2.6 Facility Fluid and Piping MaintenanceFacility water and glycol quality remain a requirement throughout the life of the piping system. Fluidand piping system maintenance schedules must be established and performed. A local fluidmaintenance program must be established that will evaluate fluid chemistry and apply necessarytreatment. A periodic leak inspection of facility and unit fluid piping is recommended. Refer to 5.4 -Glycol Piping.2.7 Electrical ConnectionsThree-phase electrical service is required for all models in either 208, 230, 460, or 575 V, 60 Hz; or200, 230, or 380/415 V, 50 Hz. Electrical service shall conform to national and local electrical codes.Refer to equipment nameplate regarding wire size and circuit protection requirements. Refer toelectrical schematic when making connections.A manual electrical disconnect switch should be installed within 5 feet (1.6 m) of the unit inaccordance with codes, or a factory-supplied disconnect switch may be factory mounted within theunit accessible from the exterior.! WARNINGRisk of electric shock. Can cause injury or death.Potentially lethal voltages exist within this equipment during operation. Observe all cautionsand warnings on unit and in this manual.The Liebert iCOM microprocessor does not isolate power from the unit, even in the “Unit Off”mode. The only way to ensure that there is NO voltage inside the unit is to install and open aremote disconnect switch. Refer to unit electrical schematic.NOTICERisk of improper scroll compressor installation. Could cause poor performance andcompressor damage.Three-phase power must be connected to the unit line voltage terminals in the propersequence so that the scroll compressor rotates in the proper direction. Rotation in the wrongdirection will result in poor performance and compressor damage. Use a phase sequence andmotor rotation sensor to ensure that the three-phase power is correctly connected and thecompressor is rotating properly.18