■ Pressure relief valves
Pressure relief valves protect the system against unacceptable pressure rise. They are factory
set.
■ Enclosures and covers over moving parts and electrical connections:
These protect against accidental contact.
4.5.3 Battery isolating switch
The «battery isolating switch »disconnects the battery completely from the machine's electrical sys‐
tem (electronic controller protection, fire protection, battery discharge protection).
CAUTION
Danger of short circuit
Damage to the machine electrics is possible.
➤ Use the «battery isolating switch» only when the machine is at standstill.
➤ Do not use the «battery isolating switch» as a main or emergency switch.
Fig. 7 Battery isolating switch
1
«Battery isolating switch»
4
Design and Function
4.5
Safety devices
32
Service Manual Screw Compressor
M170 SIGMA CONTROL MOBIL
No.: 9_9425 01 E