Operation6545−1/A1
Winterthur Gas & Diesel Ltd.
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2. Switch box
2.1 General
The engine builder supplies an electrical switch box (1, Fig. 2) for each auxiliary
blower.
2.2 Function
During the engine start procedure, the first auxiliary blower starts immediately. After
approximately two to three seconds, the other auxiliary blower starts.
When the turbocharger produces sufficient pressure in the scavenge air receiver, the
auxiliary blowers stop.
If the scavenge air pressure decreases below the minimum pressure necessary, the
auxiliary blowers operate as given above (for more data, see 4003−1, paragraph 4.6
Auxiliary Blowers).
6
4
5
3
7
012.802/05
2
8
1
Fig. 2: Switch Box (Example)
1 Switch box 5 Lamp test
2 Voltage indicator 6 Main switch
3 Service indicator 7 Hour counter
4 Overload indicator 8 Ampere meter
2014
3
Auxiliary Blower and Switch Box
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