WÄRTSILÄ Vasa R22, Инструкция по эксплуатации, Страница: 56 / 297

4 Operation at loads below 20 %
of rated output should
be limited to maximum 100 hours continuously when operating
on heavy fuel by loading the engine above 70 % of rated load
for one hour before continuing the low load operation or shut-
ting down the engine. Continuous operation on marine diesel
fuel at loads below 10 % of rated output should be limited to
maximum 100 hours by loading the engine by more than 70 %
of rated output for one hour before continuing the low load
operation or shutting down the engine.
Idling (i.e. main engine declutched, generator set discon-
nected) should be limited as much as possible. Warming-up of
the engine for more than 3 - 5 minutes before loading, as well
as idling more than 1 minute before stopping is unnecessary
and should be avoided.
03.4 Start after a prolonged stop
(more than 8 h)
03.4.1 Manual start
1 Check
•
the lubricating oil level,
•
the circulating water level in the expansion tank,
•
the raw water supply,
•
the fuel oil level in the day tank (troublesome and time
consuming job to vent the fuel system if the feed pump has
sucked air!),
•
the starting air pressure - minimum 15 bar,
•
that the control shaft system and the injection pump racks
move freely. Otherwise risk of overspeed.
2 Observe all points in chapter 03 pos. 03.1.1. Point 3
grows more important the longer the engine has been
stopped.
3 After starting, check that the starting air distributing pipe
is not heated at any cylinder (leakage from the starting valve).
4 Vent fuel and lubricating oil filters.
03.5 Start after overhaul
1 Check that the connection between the speed governor,
overspeed trip and injection pumps is set correctly (especially
the injection pump rack position) and does not jam, and that
all connections are properly locked and the injection pump
racks move freely in the pumps.
03 Start, Stop and Operation 22-9632
03 - 8 VASA 22