Manual

15
09740-09.2013-DGbFITr
D
GB
F
I
TR
5| Commissioning
5.1 Preparations for start-up
5.4 Evacuation
 Firstevacuatethesystem andthenincludethe 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.
INFO! To protect the compressor against inadmissible operating
conditions, high-pressure and low-pressure pressostats are
mandatory on the installation side.
Thecompressorhasundergonetrialsinthefactoryandallfunctionshavebeentested.Thereare
thereforenospecialrunning-ininstructions.
Check the compressor for transport damage!
5.2 Pressure strength test
DANGER! Bursting! The compressor must only be pressurised using nitrogen
(N
2
). Never pressurise with oxygen or other gases!
The maximum permissible overpressure of the compressor must not
beexceededatanytimeduringthetestingprocess(seenameplate
data)! Do not mix any refrigerant with the nitrogen as this could
cause the ignition limit to shift into the critical range.
Thecompressorhasbeenfactory-testedforpressureresistance.Thefollowingmustbeobservedif
theentireplantissubjectedtoanadditionalpressurestrengthtest:
 TesttherefrigerationcircuitaccordingtoEN378-2oracorrespondingsafetystandard.
5.3 Leak test
DANGER! Bursting!
Do not mix any refrigerant with the nitrogen (N
2
) as this could cause
the ignition limit to shift into the critical range.
CarryouttheleaktestoftherefrigeratingsysteminaccordancewithEN378-2oracorresponding
 safetystandardwithout including the compressor.