Instruction Manual

09637-11.2014-DGbFEIRu

6| Commissioning

6.1 Preparations for start-up

6.4 Evacuation

First 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 apply

any voltage - even for test purposes (must only be operated with

refrigerant).

Under vacuum, the spark-over and creepage current distances of the

terminal board connection bolts shorten; this can result in winding and

terminal board damage.

INFO! In order to protect the compressor against inadmissible operating

conditions,high-pressureandlow-pressurepressostatscontrols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!

6.2 Pressure strength test

DANGER! Bursting! The compressor must only be pressurised using nitrogen

). 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.

6.3 Leaktest

DANGER! Bursting!

Do not mix any refrigerant with the nitrogen (N

) 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.