8.7 Option lb
Shut down the machine if any dangerous situation arises
If there is a danger of the engine drawing in flammable gas the air intake shut-off valve can be
manually closed to bring it to an immediate stop.
A handle is provided to close the air intake valve. A wire pulls the valve closed preventing air enter‐
ing the engine and causing it to stop.
Precondition Flammable gas is detected in the surrounding air.
Fig. 35 Handle for manually closing the engine air intake valve
1 Handle
2 Pull wire
Closing the engine air intake valve manually
➤
Pull the handle out as far as it will go and hold until the engine comes to a complete stop.
The engine stops and the
group alarm indicator
lights on the instrument panel.
Restarting the machine:
Before the machine can be restarted, the «starter switch» on the instrument panel must be turned
to the off position (restart inhibitor).
The engine air intake valve is self-opening but this can take a few minutes. The pull wire can‐
not be pushed in.
Check whether the handle has returned to position and the engine air intake valve is open again.
Otherwise, the engine cannot be restarted.
Precondition No flammable gas is detected in the surrounding air.
1. Switch on the «starter switch».
The
group alarm indicator
is extinguished.
2. Check the position of the air intake valve handle.
The pull wire is completely drawn in: The machine can now be started.
If the pull wire has not returned the handle to its withdrawn position, wait until this is completed.
8 Operation
8.7 Shut down the machine if any dangerous situation arises
No.: 9_6974 20 E
Service manual Portable compressor
M122
71
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