WÄRTSILÄ 46F Series, Product Manual

Page: 81 / 208

Total consumption of the connected engines added with
the flush quantity of the automatic filter (1F08) and 15%
margin.
Capacity
1.6 MPa (16 bar) Design pressure
0.7 MPa (7 bar) Max. total pressure (safety valve)
100°C Design temperature
1000 cSt Viscosity for dimensioning of electric motor
Pressure control valve, booster unit (1V03)
The pressure control valve in the feeder/booster unit maintains the pressure in the de-aeration
tank by directing the surplus flow to the suction side of the feed pump.
Design data:
Equal to feed pump Capacity
1.6 MPa (16 bar) Design pressure
100°C Design temperature
0.3...0.5 MPa (3...5 bar) Set-point
Automatic filter, booster unit (1F08)
It is recommended to select an automatic filter with a manually cleaned filter in the bypass
line. The automatic filter must be installed before the heater, between the feed pump and the
de-aeration tank, and it should be equipped with a heating jacket. Overheating (temperature
exceeding 100°C) is however to be prevented, and it must be possible to switch off the heating
for operation on MDF.
Design data:
According to fuel specification Fuel viscosity
100°C Design temperature
If fuel viscosity is higher than 25 cSt/100°C Preheating
Equal to feed pump capacity Design flow
1.6 MPa (16 bar) Design pressure
Fineness:
35
μ
m (absolute); 20
μ
m ß20=10, ISO16889 - automatic filter
35
μ
m (mesh size) - by-pass filter
Maximum permitted pressure drops at 14 cSt:
20 kPa (0.2 bar) - clean filter
80 kPa (0.8 bar) - alarm
Flow meter, booster unit (1I01)
If a fuel consumption meter is required, it should be fitted between the feed pumps and the
de-aeration tank. When it is desired to monitor the fuel consumption of individual engines in
DAAB605814 6-25
6. Fuel Oil System Wärtsilä 46F Product Guide