2 I Safety
General safety instructions
DANGER Risk of electric shock
• Before you carry out any repair work, disconnect the compressor from the electricity network
• Turn the main switch to "O" (OFF)
• Secure the main switch against an unauthorised restart
WARNING • Refrigerating compressors are pressurised machines and therefore require particular
caution and care in handling.
• Only qualied personnel are allowed to perform any work on refrigeration compressors.
• The national safety regulations, accident prevention regulations, technical rules and specic
regulations (EN 378 and others) must be taken into account absolutely.
• Never put the safety switch out of action!
• Prior to commissioning, check whether all the components installed by the user have been
fastened expertly and connected pressure-tight with the compressor (e.g. piping, plugs, union
nuts, replaced components etc.).
• Before commissioning, evacuate the refrigerant systems carefully including the compressor and
afterwards charge refrigerant.
• Prior to starting the compressor open discharge shut-off valve and suction shut-off valve.
• Do not start the compressor in vacuum. Operate the compressor only when the system is charged.
• Risk of burns! Depending on the operating conditions, surface temperatures of over 60 °C
on the pressure side or below 0 °C on the suction side can be reached.
• The maximum permissible overpressure must not be exceeded, even for testing purposes.
• Danger of injury! Never grab rotating parts during operation!
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