KAESER KOMPRESSOREN EPC-2-G Series, Сборка и руководство по эксплуатации, Страница: 38 / 96

Enclosures and covers
Enclosures and covers over moving parts and electrical connections protect against accidental con‐
tact.
4.4.1 Safety and regulating devices
The following safety and regulating devices are to be installed by the user.
Pressure relief valve
The pressure relief valve protects the air receiver against excessive pressure.
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.
Pressure switch
The pressure switch regulates the working pressure of the air network. The pressure switch toggles
the compressor between LOAD and STANDSTILL to maintain a constant working pressure.
Pressure gauge
The gauge monitors working pressure.
It should be chosen to accommodate the maximum working pressure.
Motor overload protection
The motor protection device shuts down the machine:
■ in the case of a phase drop-out overload,
■ if the ambient temperature becomes too high,
■ if the compressor block seizes,
■ if the mains voltage fluctuates outside limits.
AC motors may be operated only with correctly set motor protection switch or overload relay.
The warranty is void without motor protection.
Further information See chapter 6.5 for an example of the arrangement of the safety installations to be installed by the
user.
Safety signs
The machine has been delivered with all necessary safety signs.
After installation in a system, the user is obliged to add any necessary safety-related labels.
4.5 Accessories
To reduce the machine's noise emission, it can be retrospectively fitted with a sound enclosure.
Further information Instructions on installation of a sound enclosure can be found in chapter 6.8.
4 Design and Function
4.5 Accessories
28
Assembly and operating manual 2-stage piston compressor
EPC-2-G
No.: 9_5753_04 E