Arctiko SF SERIES, Руководство по обслуживанию, Страница: 13 / 48

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3f. Changing the compressor
Evacuate the refrigerant of the system. See section 3d.
All tubes are cut with a pipe cutter. Do NOT solder of.
When replacing the compressor the dryfilter must also be replaced. See section 3e.
The suction and pressure pipes of the compressor must be cleaned and cut with a pipe cut-
ter just above the soldering pipe.
Demount the compressor.
Install the new compressor, which is prepared as described before. (3c)
In order to avoid decomposition of refrigerants which may remain in the system during the
soldering operation, the system is blown with dry nitrogen, respectively, from the suction
side respectively pressure side.
Solder the tubes on to the compressor.
Pressure test the system.
3g. Pressure testing and leak detection
Pressure test the system with nitrogen. The pressure must be 10 bar during a period of 2
hours.
Check the solder points with soapy water or leak detection spray.
In case of any leaks, empty the system for nitrogen.
Repair and pressure test again.
During operation leak detection must be performed on the pressure side with the compres-
sor running. The suction side must be tested while the compressor is stopped, and the
pressures are equalized.
The nitrogen must slowly be emptied from the system.