Field Setting ESIE09-08114 Test Operation3.2.2 Setting of Vacuuming ModeIn order to perform vacuuming operation at site, fully open the expansion valves of indoor andoutdoor units and turn on some solenoid valves.[Operating procedure]c In “Setting Mode 2” with units in stop mode, set “B Refrigerant Recovery / Vacuuming mode”(setting 21) to ON. The respective expansion valve of indoor and outdoor units are fullyopened. “TEST OPERATION” and “UNDER CENTRALIZED CONTROL” are displayed onthe remote control, and the indoor / outdoor unit operation is prohibited.After setting, do not cancel “Setting Mode 2” until completion of Vacuuming operation.d Use the vacuum pump to perform vacuuming operation.e When finished vacuuming, press Mode button “BS1” once and reset “Setting Mode 2”.3.2.3 Setting of Automatic Pump Down OperationWhen carrying out the automatic pump down operation, follow below operation procedure.[Operating procedure]c Turn on the main power supply.d Make sure the liquid stop valve is closed and the gas stop valve is open and that the lowpressure switch is working.e In “Setting Mode 2”, set “Automatic Pump Down” (setting 61) to ON. After setting, do notcancel “Setting Mode 2” until completion of pump down operation.4 The compressor and outdoor unit fan will start operating automatically. During operation, theLED’s are showing the progress.5 If step 6 is reached (pressure drops below 3 bar) or if operation stops, close the gas stopvalve.6 Turn off the main power supply.Remark: Make sure to re-open both stop valves before restarting the unit.(w: ON x: OFF c: BLINK)H1P H2P H3P H4P H5P H6P H7PStep 1 w c w w w w wStep 2 w c x w w w wStep 3 w c x x w w wStep 4 w c x x x w wStep 5 w c x x x x wStep 6 w c x x x x c
