WÄRTSILÄ PAAE051728, Instruction Manual

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b) Insufficient cooling water flow through oil cooler (faulty pump, air in system, valve
closed), too high raw water temperature
19.1.4
01.3
c) Oil cooler clogged, deposits on tubes 18.5
d) Faulty thermostat valve 18.6
15.
Abnormally high cooling water outlet temperature, difference
between cooling water inlet and outlet temperatures too large
01.2
a) One of temperature sensors faulty
b) Circulating water cooler clogged, deposits on tubes
c) Insufficient flow of cooling water through engine (circulating water pump faulty), air in
system, valves closed
19.3
03.4.1
d) Thermostat valve faulty 19.4
16. Water in lubricating oil
02.2.3, 03.4.1
a) Leaky oil cooler 18.5
b) Faulty lubricating oil separator. See separator instruction book! 02.2.3
17.
Water in charge air receiver
(escapes through drain pipe in air cooler housing)
15.5
a) Leaky air coolers
b) Condensation (too low charge air cooling water temperature) 03.4.1, Fig 03-2
18. Engine looses speed at constant or increased load
a) Engine overloaded, a further increase of fuel supply is prevented by the mechanical
load limiter
22.1, Fig 22-1
pos. 11
b) See points 2c, f, g, h, i
c) See points 4c, d, 5g
19. Engine stops
a) Shortage of fuel, see points 2h, i
b) Automatic stop device has tripped 23.2.3
c) Faulty governor or governor drive 22.
d) Faulty power supply to automation system 23.
20.
Engine does not stop although stop lever is set in stop position or
remote stop signal is given
a) Injection pump control rack wrongly set (3b, c)
Block fuel supply as near the engine as possible (e.g. by fuel filter three-way cock).
Before restarting the engine, the fault must be located and corrected.
Great risk of
overspeed.
b) Faulty stop automation. Stop by means of stop lever 23.2.3
c) The engine driven by generator or propeller or by another engine connected to same
reduction gear
21.
Engine overspeeds and does not stop although
overspeed trip device trips
a) Injection pump control rack wrongly set (3b,c). Load the engine, if possible.
Block fuel supply, e.g. by means of fuel filter three-way cock.
b) An overspeeding engine is hard to stop. Therefore, check regularly the adjustment of
the control mechanism (the injection pump rack positions):
1) the stop lever being in stop position or the overspeed trip device being tripped and
the speed governor at max. fuel admission
2) the stop lever and the overspeed trip being in work position and the speed
governor in stop position.
This control should be done always when the control mechanism or the injection
pumps have been touched.
22.3
08 Operating Troubles, Emergency Operation 32-200402-01
08 - 4 WÄRTSILÄ 32