Fischer Panda 45i pms, User Manual

Page: 72 / 212

Installation Instructions
Seite/Page 72 - Kaptitel/Chapter 6: Installation Instructions 8.10.14
Fig. 6.7.2-1: Installation Scheme Standard Exhaust System
6.8
.
Installation of the waterlock
Note!:
Pay attention to the right flow direction throught the waterlock.
Unfortunately, it can occasionally occur that, because of an disadvantageous mounting position of the waterlock, sea
water gets into the diesel engines’ combustion chamber. This disables the diesel engine by irreversible damages.
Quite frequently, this leads to discussions during which the parties involved in the yachts’ construction or the installa-
tion of the generator have to explain themselves.
One point in this situation can be clarified definitely:
If sea water gets into the inner section of the engine, this is not possible due to constructional defects of the genera-
tor or to malfunctions on the engine itself. It can only reach the combustion chamber via the exhaust hose and thus
get into the engine.
Thereby, the position of the generator and the waterlock, as well as the arrangement of the cooling water and
exhaust hoses play the decisive role.
If the waterlock is arranged in an unfavourable position, the cooling water flowing back in the exhaust hose can rise
so high, that it reaches the exhaust stack. Since at least one discharge valve is always open when the engine is shut
off, the sea water has free access to the combustion chamber. By capillary action, this sea water then flows past the
cocks and even reaches the engine oil in that way. (In fact, a surprisingly high oil level is a first indication of an
upcoming catastrophe).
If an usual high oil level can be detected and/or the oil is of a greyish colour, the engine must not be used
anymore. This is a certain sign for cooling water that got into the oil pan. If the engine is started under these
conditions, the water and the oil are mixed into an emulsion. The oil will quickly become so viscous that one
will have to call it a paste. In this phase the fine oil hoses are blocked and a few moments later the machine
gets destroyed because of insufficient lubrication. Before this happens, an immediate oil change should be
made. Since the water can only reach the engine via the combustion chamber, it can be assumed that the
compression rings will start to corrode. These effects have to be discussed with an engine expert. It will cer-