Installation Instructions
Panda PMS AGT-DC 4000 - Chapter D: Installation Instructions Page 43
D.3.4 Installation above waterline
The Panda is equipped with a direct drive water intake pump mounted directly on the motor.
Since the intake pump is an impeller pump there are wearing parts which will likely require repla-
cement after some time. Ensure that the genset is installed such that the intake pump can be
easily accessed. If this is not possible, an external intake pump could be installed in an easily
accessed location.
If the generator is installed above the waterline it is possible that the impeller wearout will be
stronger. After the start the pump runs dry some seconds.
The raw water hose should describe a loop as near as possible to the raw water inlet of the gene
ator (see picture below). With it the pump only sucks in air for a short time. The impeller will be
lubricated by the raw water and its life time will rise.
By the installation of a check valve in the raw water inlet line, which is under the waterline, this
problem can be limited a little.
It is very important to change the impeller every few month. When starting the generator you
should pay attention and listen when raw water comes out from the exhaust. If this lasts longer
than 5 seconds the impeller has to be changed, because he sucks to much air before raw water
reaches the impeller and the impeller wears out strongly. In this case the impeller looses its
function, which leads to an overheating of the engine.
If the impeller isn’t exchanged early enough, the impeller wings can break into pieces and clog
the cooling circuit. Therefore it is very important to change the impeller every few month.
NOTE:
Never change the impeller for many years, without exchanging the old pump. If the sealing ring is
defective within the pump, seawater runs into the sound cover of the aggregate. A repair is then
very expensive.
Replacement impeller and also a spare pump should always be on board. The old pump can be
sent back to ICEMASTER, where it is then economically overhauled completely.
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
