GEA FK40 Series Assembly Instructions Manual

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Contents

GEA FK40 Series Assembly Instructions Manual Manual pdf 15 page image

1509716-06.2016-DGbFEITrCnRuDGBFEITRCNRu5| Commissioning5.1 Preparations for start-up5.4 EvacuationFirst evacuate the system and then include the compressor in the evacuation process.Relieve the compressor pressure.Open the suction and discharge line valves.Evacuate the suction and discharge pressure sides using the vacuum pump.At the end of the evacuation process, the vacuum should be < 1.5 mbar when the pump is switched off.Repeat the process as often as is required.The compressor has undergone trials in the factory and all functions have been tested. There aretherefore no special running-in instructions.Check the compressor for transport damage!INFO To protect the compressor against inadmissible operating condi-tions, high-pressure and low-pressure pressostats are mandatoryon the installation side.5.3 Leak testCarry out the leak test on the refrigerating plant in accordance with EN 378-2 or a correspondingsafety standard, while always observing the maximum permissible overpressure for the compressor.DANGER Risk of bursting!The compressor must only be pressurised using nitrogen (N2).Never pressurise with oxygen or other gases!The maximum permissible overpressure of the compressor mustnot be exceeded at any time during the testing process (see nameplate data)! Do not mix any refrigerant with the nitrogen as thiscould cause the ignition limit to shift into the critical range.5.2 Pressure strength testThe compressor has been tested in the factory for pressure integrity. If however the entire system isto be subjected to a pressure integrity test, this should be carried out in accordance with EN 378-2or a corresponding safety standard without the inclusion of the compressor.