1 SAFETY
Mitsubishi Diesel Engine S16R & S16R2 OPERATION & MAINTENANCE MANUAL
59
Pub. No. K29001-00320 Revision: 1
Zero Energy State
"Zero Energy State" is to maintain the condition to
inhibit unexpected energy releases or inputs during
maintenance work. In other words, Zero Energy
State is to prevent unexpected output or input of
energy when the engine is not used, even if the
potential energy is not zero.
• You must know how to set the engine
to Zero Energy State.
• When setting the generator to Zero
Energy State, refer to the
corresponding manual of the generator.
How to Set the Engine to Zero
Energy State
1 Operate the stop switch of the
generator "Starting and Stopping
Devices Installed during
Manufacturing the Generator" (→
Page 87) to turn off the engine.
2 Make sure the engine has stopped.
3 Set the battery switch to "OFF", or
disconnect the battery negative (-)
terminal to isolate from main power
source.
4 Disconnect the external equipment
(set the relay of the generator "OFF",
etc.).
For engines with the air direct admission starting or
air motor starting system, conduct the following
operation in addition.
5 Bleed air trapped in the air starter
system (starting air tank, starting air
compressor) to release the residual
pressure.
Working Procedure in
Dangerous Areas
Works in Dangerous Areas
When you need to enter a dangerous area, for
example, to solve a problem that has occurred
during operation, follow the procedure shown
below.
â– Works that require Lockout/tagout
• When you conduct a work which can
not be done for a short time, for
example, when replacing a part,
conduct lockout/tagout for ensuring
safety.
1 Operate the stop switch of the
generator "Starting and Stopping
Devices Installed during
Manufacturing the Generator" (→
Page 87) to turn off the engine.
2 Lock the starting switch of the
generator "Starting and Stopping
Devices Installed during
Manufacturing the Generator" (→
Page 87) with a key and hang a tag,
as necessary.
• A tag must be hanged, as necessary,
by considering the number of the
operators, difficulties to check the
presence of each other, or the
working times.
3 Conduct the works.
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