WÄRTSILÄ VASA 6L32, Instruction Manual

Page: 159 / 394

08.2 Emergency operation
08.2.1 Operation with defective air cooler(s)
If the water tubes of an air cooler are defective, the cooling water
may enter the cylinders. If water or water mist flows out of the
drain pipe at the bottom of the cooler housing, check whether it
is raw water or condensate. If condensate, reduce cooling (see
chapter 03, Fig 03-2). If raw water, stop the engine as soon as
possible and fit a spare cooler.
If no spare cooler is available, the following can be done as an
emergency solution:
a) If there is not time enough to remove the defective cooler
and repair it, shut off water supply and return pipes.
b) Operating with a partially plugged, shut-down or removed air
cooler.
Engine output must be limited so that the normal full
load exhaust temperatures are not exceeded. The turbocharger
may surge before the admissible exhaust temperatures are
reached. In such a case, engine load must be reduced further
to avoid continuous surging.
08.2.2 Operation with defective turbocharger(s)
A defective turbocharger is to be treated in accordance with the
service instructions given in the turbocharger instruction book
(blocking of rotor, blanking of turbocharger etc.). See chapter 15,
section 15.4.
08.2.3 Operation with defective cams
If the camshaft piece with damaged cams cannot be removed and
replaced by a new one, the engine can be kept running by the
following measures:
a) Injection pump cams:
Lock the injection pump tappet in upper position by a locking
plate 800066 included in the tool set.
Attention! Concerning torsional vibrations and other vibrations, see sec.
08.2.5.
When operating with a shut-off injection pump over a long period,
the valve push rods of the inlet and outlet valves are to be
removed, and the indicator valve on the respective cylinder is to
be opened once an hour to allow any accumulated oil to escape.
With one cylinder out of operation, reduce load to prevent
exhaust temperature of the remaining cylinders from exceeding
normal full load temperatures.
32-200402-01 Operating Troubles, Emergency Operation 08
WÄRTSILÄ 32 08 - 5