KAESER Premium Compact W 200/4, Service Manual

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4.2 Operating modes and control modes
4.2.1 Operating modes
There are two operating modes:
■ LOAD:
The compressor block delivers compressed air.
The drive motor runs under full load.
■ STANDSTILL:
No air is compressed. A check valve prevents compressed air flowing back into the compres‐
sor block. The compressor block is vented.
The drive motor is stopped.
4.2.2 Control modes
■ Pressure switch:
According to the set switching points, the pressure switch toggles the machine between the op‐
erating modes LOAD and STANDSTILL.
4.3 Safety devices
The following safety devices are provided and may not be modified in any way.
Pressure relief valve
The pressure relief valve protects the machine from excessive pressure. It is factory set.
Check valve
The check valve prevents the flow of compressed air from the air receiver back to the compressor
block when the machine is stopped.
Enclosures and covers
Enclosures and covers over moving parts and electrical connections protect against accidental
contact.
4 Design and Function
4.2 Operating modes and control modes
22
Service Manual Reciprocating compressor
Premium compact W
No.: 9_9418 20E