MAINTENANCE
US / WHISPER 15 ULTRA - Three Phase / December 2008 / Copyright © 2008 Mastervolt
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4 MAINTENANCE
4.1 ALTERNATOR
The alternator does not require any maintenance. Periodic
inspection and cleaning is recommended, depending on
environmental conditions.
However when the alternator has been idle for a long
period attention to winding condition is recommended.
The condition of windings can be assessed by
measurement of insulation resistance to earth. (See 0
Meggering).
The alternator bearing is greased for life and is therefore
not regreasable
4.2 ENGINE
4.2.1
Preliminary instructions
All regular maintenance can be carried out when the
enclosure is open. When oil and dirt has gathered in the
enclosure measures have to be taken to avoid spilling oil
and polluting the environment.
The first service on the engine should be carried out after
50 hours of its life and after a major overhaul. In the first
50 hours the engine should receive special attention:
Long periods of light or no load running in the first 50
hours may lead to cylinder glazing and high oil
consumption.
For the same reason it is of the greatest
importance to use the right oil specification
The first time starting up or after running out of fuel it could
be necessary to prime the fuel system.
4.2.2
Bleeding fuel lines
Ensure there is sufficient fuel. The system is self bleeding.
The first time starting up or after running out of fuel it could
be necessary to prime the fuel system. Push the start
button activating the electric system and activating the fuel
pump. When more time is needed to bleed, push “start”
and hold on the local control panel (so not on the remote
panel) Hold as long as necessary to bleed the system.
Retighten the bleed screw when no further air bubbles are
expelled.
Fig. 17: Bleeding fuel lines 1 = Fuel bleeding screw
4.2.3
Valve clearance
When the engine is in cold condition both valves (inlet and
outlet) should have a clearance between 0.25 mm. The
adjustment has to be done at TDC (refer to § 5.4.2).
4.2.4
Replacing fuel filter
Filter change depends on contamination of the fuel, but
should be done however, at least every 300 running hours.
Before changing the filter, clamp off the supply line.
Remove the hoses from filter and attach them on the new
filter again. The arrow on the filter housing indicates the
direction of the flow. A clogged filter results in a lack of
output of the generating set.
4.2.5
Replacing oil filter
The oil filter is in front of the service side. Replacement
has to be executed according to the schedule in this
manual. Drain the oil using the sump pump and put some
tissues under the filter.
Fig. 18