Vetus NLPG Installationshandbuch Seite 7

1 Safety
Warning indications
Where applicable, the following warning indications are used in this
manual in connection with safety:
Indicates that great potential danger exists that can lead to serious
injury or death.
Indicates that a potential danger that can lead to injury exists.
Indicates that the usage procedures, actions etc. concerned can re-
sult in serious damage to or destruction of the engine. Some CAU-
TION indications also advise that a potential danger exists that can
lead to serious injury or death.
Emphasises important procedures, circumstances etc.
Symbols
Indicates that the relevant procedure must be carried out.
Indicates that a particular action is forbidden.
Share these safety instructions with all users.
General rules and laws concerning safety and accident prevention
must always be observed.
This product should only be installed and maintained by
qualified personnel who have read and understood the in-
structions and precautions in this manual. Failure to follow
the instructions in this manual may result in serious injury or
property damage. The manufacturer shall not be liable for any
damages resulting from improper installation or maintenance
by unqualified personnel.
Goose neck NLPG
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2 Introduction
The VETUS exhaust system components are especially suitable for
use in water-injected exhaust systems.
The maximum continuous operating temperature of the plastic com-
ponents of the exhaust systems is 70 degrees C (158 degrees F).
- Fit a temperature alarm to warn of excessively hot exhaust system
temperature.
- If the quantity of injected coolant water is reduced to in order to
lower back-pressure in the exhaust system, check that there is still
sufficient water injected when the engine is ticking-over. This will
prevent excess temperatures in the exhaust system.
- Excess temperature can also be the consequence of insufficient
mixing of coolant water with the exhaust gasses.
In general, good mixing is obtained by a virtually vertically in-
stalled exhaust injection bend.
Poor mixing can also occur with an engine on tick-over; especially
when the coolant water injection bend is installed virtually hori-
zontally.
If necessary, take action. For example; by fitting a water vortex or
a water splitter in the exhaust pipe, to improve the mixing of cool-
ant water with the exhaust gasses.
With water-injected exhaust systems, fit a hose of suitable quality.
This hose must be reinforced, resistant to exhaust gasses, high tem-
peratures (100 degrees C, 212 degrees F) and oil. Easy flexibility is
essential for installation, while the hose must not collapse when
heated.
VETUS exhaust hose fulfils all the above requirements.
Hose dia.:
NLPG40 ø 40 mm (1 9/16")
NLPG45 ø 45 mm (1 3/4")
NLPG50 ø 50 mm (2")
NLPG60 ø 60 mm (2 3/8")
NLPG75 ø 75 mm (3")
NLPG90 ø 90 mm (3
* Based on an allowed back pressure of 0.1 bar.
If water enters the engine from the waterlock into the exhaust
system (for example: under sail when the ship rolls or pitches
heavily) this will lead to irreparable damage to the engine.
Too much water in the waterlock can effect engine starting;
drain off this water first. Too much water in the waterlock can
be also caused by repeated starting attempts while the engine
refuses to start.
ENGLISH
*
Engine power to
18 kW (24,5 hp)
22 kW (30 hp)
28 kW (38 hp)
39 kW (53 hp)
63 kW (86 hp)
1 / ") 89 kW (121 hp)
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