Table of Contents
Advertisement
8
M-SQ PRO 15/18 kVA 60 Hz
Figure 6: Internal cooling system
1
Water level;
2
Water/exhaust separator;
3
Seacock;
4
Waterlock;
5
Air vent;
6
Water strainer;
7
Seacock.
2
RAW WATER SUPPLY
For raw water supply the following installati on materials are
required: - a skin fi tti ng - a sea cock - a water strainer - hoses and
clamps. In order to keep the sucti on resistance in the line at a
minimum, the sea water intake system (i.e. sea cock, trough-hull
fi tti ng, inlet fi lter, etc.) must have an inner diameter of at least
25.4 mm diameter (1"). The sucti on hose should be kept as short
as possible. Raw water plumbing should avoid bends as much as
possible. Restricti on of raw water fl ow, caused by kinked hoses,
undersized pipes or connecti ons, will reduce the engine cooling
capability. This is the main cause for overheati ng of an engine.
Aft er running the generati ng set for the fi rst ti me, check the cool-
ant fl ow rate using a stopwatch and by holding a pail of a known
volume under the wet-exhaust outlet. The fl ow rate should be
according to the data in the user's manual
3
INSTALLATION OF THROUGH HULL FITTING
It is good practi ce for yachts to use a hull inlet fi tti ng with an
integrated strainer (water scoop). For propulsion engines in
motorboats the water scoop is oft en mounted against the sailing
directi on to induce more water intake for cooling.
This should not be done in the case of a generati ng
set! When sailing at higher speeds, water will be
forced into the inlet and your generati ng set will
overfl ow! (see fi gure 7).
Marine Diesel Generator
OK!
X
WRONG!
Figure 7: Installing water intake
On motorboats and on sailing boats the water scoop for a gen-
erati ng set should be fi tt ed with the opening faced backwards to
prevent water being forced in during sailing.
4
WATER STRAINER
Use an appropriate water strainer with connecti ons of 25.4 mm
(1"). Install the water strainer in a well accessible positi on, 5 cm
above the waterline (see fi g. 6, ref. 6).
5
SIPHON BREAKER (AIR VENT)
When the point of water injecti on is below the waterline, then
-when the engine is stopped - there is a risk that the cooling
water may enter the engine as a result of siphoning. To avoid this
happening, the generati ng set is designed to accommodate a
siphon breaker (air vent). See page 18 Syphon Breaker kit. In the
standard delivery the connecti ons are bypassed. Hose of 25.4
mm (1") inner diameter should be used.
Advertisement
Table of Contents
