Table of Contents
Advertisement
If the generating set cannot be mounted such that the bottom of
the generating set is placed above the waterline, an air vent must
be installed.
Extend the water hose of the by-pass 60 cm above waterline and
install an air vent. Ideally, the air vent should be mounted above
the yacht keel centre line (i.e. to minimize the influence of sway-
ing on the water intake). See figure 6, ref. 5.
Fast motorboats will lay deeper when sailing at large speed and
can cause pressure on the water inlet. This should be avoided to
prevent flooding the engine.
If the air vent is clogged the water hoses will not be
vented when the generating set has stopped and water
can be forced into the engine. This leads to immediate
engine problems and eventually severe damage!
DAMAGE CAUSED BY THE INGRESS OF WATER IN THE ENGINE IS
NOT COVERED BY GUARANTEE
1�5�3 Exhaust system
Water is injected in the exhaust system of the generating set. In
this way the cooling water that has passed the heat exchanger is
mixed with the exhaust gases. Temperature and volume of the
gases are thereby reduced considerably, so that a rubber exhaust
hose can be used and the level of noise is reduced as well.
Figure 8: Exhaust system
1
Exhaust water lock;
2
Exhaust outlet muffler;
3
Exhaust line Ø 50 mm (1½");
4
Goose neck
5
Through-hull exhaust outlet Ø 63 mm (2½");
6
Water level.
M-SQ PRO 15/18 kVA 60 Hz
1
STANDARD EXHAUST SYSTEM INSTALLATION
The generating set exhaust system must remain completely
independent and separate from the exhaust system of any other
engine on board. A water lock prevents the generating set from
being flooded by cooling water and should be installed as close
to the generating set as possible. The lock must be large enough
to hold the entire water volume held in the hose from the top
of the goose neck to the water lock. The water lock must be
installed at the lowest point of the exhaust system (ref. to fig. 8,
ref. 1). The exhaust hose must have an inner diameter of 50 mm
(1½"). The exhaust system must be installed so that the back
pressure inside the exhaust does not exceed 0.07 bar (1psi – 70
cm water column) and total length from the generator to the top
of the goose neck or water/separator does not exceed 3m (10
ft.). (Refer to paragraph 5.4.3 of the user's manual).
The exhaust hose descends from the capsule to the water lock.
Then the hose rises via the "goose neck" to the through-hull
exhaust outlet, situated minimum 50 mm above the water line
(see fig. 8, ref 5.) The "goose neck" must be vertical and situated
preferable along the ship's keel centre line. If the generating set
is mounted less than 600 mm (24") above the waterline, a "goose
neck" must be installed to prevent the engine from overflow-
ing. It is recommended to install an extra muffler close to the
through-hull fitting.
Marine Diesel Generator
9
Advertisement
Table of Contents
