3.7 Working life of safety functions
The safety-relevant components of the safety functions are designed for a working life of 20 years.
The working life starts with original machine commissioning, and is not extended by times during
which the machine is not in use.
The following components are affected:
■ Resistance thermometer (Pt100 sensor for measuring the compression discharge temperature)
■ EMERGENCY STOP push button
■ Main contactor
■ Door interlock switch
1. The components of the safety functions must be replaced by an authorized KAESER service
representative after a working life of 20 years.
2. Have an authorized KAESER service representative check the reliability of the safety func‐
tions.
3.8 Safety Signs
The diagram shows the locations of safety signs on the machine. The table lists the various safety
signs used and their meanings.
Fig. 4 Location of safety signs
Item Symbol Meaning
8
Danger of fatal injury from touching electrically live components!
➤ Switch off and lock out the power supply disconnecting device and check that
no voltage is present.
3
Safety and Responsibility
3.7
Working life of safety functions
9_5875 33 USE
Operator Manual Screw Compressor
SM Tri-Voltage, SIGMA CONTROL 2
19
