Wartsila 31, Product Manual

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Fig 13-4 Signal overview (Generating set)
13.2 Functions
13.2.1 Start
The engine is started by injecting compressed air directly into the cylinders.
The engine can be started locally, or remotely if applicable for the installation e.g. from the
power management system or control room. In an emergency situation it is also possible to
operate the starting air valve manually.
Starting is blocked both pneumatically and electrically when the turning gear is engaged.
The engine is equipped with a slow turning system, which rotates the engine without fuel
injection for a few turns before start. Slow turning is performed automatically at predefined
intervals, if the engine has been selected as stand-by.
13.2.1.1 Startblockings
Starting is inhibited by the following functions:
● Turning gear engaged
● Pre-lubricating pressure low
●
Blocked by operator from the local operator panel
●
Stop or shutdown active
●
External start blockings active
●
Engine running
Wärtsilä 31 Product Guide - a1 - 18 October 2016 13-5
13. Automation System Wärtsilä 31 Product Guide