Fuel Treatment System - Putting Into Operation - MTU 8 V 4000 M40A Operating Instructions Manual

4.6 Fuel treatment system – Putting into operation
Fuel treatment system – Overview
1. Switch on fuel treatment system (→ Page 63).
2. Check the differential pressure at differential pressure gauge (8). Differential pressure in a new system:
0.1 bar to 0.3 bar.
Result: If no differential pressure is measured, the coalescer filter element is probably being bypassed.
1. Remove coalescer filter element (→ Page 147).
2. Check sealing faces on coalescer filter element and in the pressure tank.
Initial operation: HAT
1. Replace fuel filter on engine (→ Page 105).
Note: Determine the suction pressure upstream of the engine-mounted fuel delivery pump.
2. Install a pressure gauge in the fuel supply line from the shipyard-side fuel system to the engine.
3. Switch on fuel treatment system and operate it for some minutes (→ Page 63).
Result: Fuel is sucked from the tank, dirt particles and water are filtered and separated, then the fuel is delivered
via the overflow tank back to the tank. Water which has settled in the tank is separated.
4. Start engine (→ Page 62).
5. Run engine at idling speed.
6. Check suction pressure (see technical data of the engine) at the engine-mounted fuel delivery pump.
Note: If the suction pressure is within the permissible limits and engine operation is satisfactory:
7. Increase engine speed to 1000 rpm and monitor suction pressure.
8. Check suction pressure at the engine-mounted fuel delivery pump.
Result: If the values are within the limits specified by the manufacturer, the system is ready to start filter replace‐
ment simulation with the engine running as part of the Harbor Acceptance Tests.
60 | Operation | MS15021/01E 2012-02