Mode of Operation of the Generator
Page 10 Panda PMS AGT-DC 4000 - Chapter A: Mode of Operation of the Generator
A.4.1 Control of the vent valve
If the valve is blocked, the cooling water pipe cannot be ventilated after the stop of the generator,
the water column is not interrupted and the water can penetrate into the combustion chamber of
the engine.
This lead to destruction of the engine!
A.5 Operation of the generator with installation over the water-
line
Generator over the waterline:
If the generator is installed over the waterline, a stronger impeller wear is possible, the pump can
run after the start some seconds dry.
It is very important that the impeller is exchanged every few months. When starting the generator
attention should be always paid and heard to it, when raw water withdraws from the exhaust
neck. If this takes longer than 5 seconds the impeller must exchanged, he sucks in air before raw
water reaches the impeller (see picture below) and the impeller then wears strongly. In this case
the impeller loses his effect and raw water can penetrate into the engine as well as substantially
destroy it. If the impeller is not exchanged early enough, the entire pump must be replaced.
Otherwise the impeller wings breaks in pieces and it stresses some time to remove these again.
Replacement impeller should always be on board.
With the installation of the generator it must be paid attention that the impeller pump is well
accessible, since the impeller is a wearing part. If this place at the location can be reached not
well, an external pump with electric drive can be used instead of the pump built firmly in the sound
cover, which should be installed in a well accessible place.
1)
Hull inlet
2)
Reducer
3)
Water cock
4)
Raw water filter
5)
Raw water pump
6)
Heat exchanger
7)
Fresh water pump
8)
Exhaust manifold, water-cooled
9)
Diode block, water-cooled
10) Cooling water tank
