GEA HG34P Series Assembly Instructions Manual

Also see for HG34P Series: Maintenance manual Assembly instructions

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GEA HG34P Series Assembly Instructions Manual Manual pdf 18 page image

18DGBFE09618-05.2012-DGbFEI6| Commissioning6.2 Pressure strength testWARNING! The compressor must never be pressurised using oxygen or othertechnical gases!The maximum permissible overpressure of the compressor must notbe exceeded at any time during the testing process (see name platedata)!6.1 Preparations for start-upThe compressor has been factory-tested for pressure resistance. The following must be observed ifthe entire plant is subjected to an additional pressure strength test:Test the refrigeration circuit according to EN 378-2 or a corresponding safety standard.The pressure strength test is best carried out using dry nitrogen (N2).Do not mix any refrigerant with the testing medium (N2) as this could cause the ignition limit toshift into the critical range.6.3 Leak testCarry out the leak test of the refrigerating system in accordance with EN 378-2 or a correspondingsafety standard without including the compressor.Do not mix any refrigerant with the testing medium, as this could cause the ignition limit to shift intothe critical range.6.4 EvacuationFirst evacuate the system and then include the compressor in the evacuation process.Relieve the compressor pressure.Open the suction and pressure line shut-off 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 this process as often as is required.ATTENTION! Do not start the compressor if it is under vacuum. Do not applyany voltage - even for test purposes (must only be operated withrefrigerant).Under vacuum, the spark-over and creepage current distances of theterminal board connection bolts shorten; this can result in winding andterminal board damage.INFO! In order to protect the compressor against inadmissible operatingconditions, high-pressure and low-pressure pressostats controls aremandatory on the installation side.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!