WÄRTSILÄ VASA 6L32, Instruction Manual

Page: 271 / 394

Booster unit
Note! The appearance in testing will be a big bang as well as fuel
mist like in an actual engine.
Therefore assure adequate ventilation of the space where
testing is done and observe the normal safety regulations of
fuel handling.
When adjusting the opening pressures of fuel valves with the
booster unit connected, valve (3) is to be kept closed and
valve (4) opened.
It is recommended to store the fuel valves with the adjusting
screws loosened, i.e. to adjust the valves first just before putting
them in the engine(s).
4 When pumping
with the hand test pump device, the pres-
sure increases inside the chamber (2). At the certain point the
pressure/force against the control valve (5) is bigger than the
force in opposite side (spring force + pressure). This will make
the control valve (5) open. The function of the control valve is
similar to the main delivery valve in the fuel injection pump
head.
1. From hand pump
2. Chamber
3. Valve
4. Valve
5. Control valve
To the fuel valve
Drain
From the handpump
4
3
3
1
2
5
Fig 16-6
401620200209
32-200627-01 Injection System 16
WÄRTSILÄ 32 16 - 17