1 SAFETY
Mitsubishi Diesel Engine S12R OPERATION & MAINTENANCE MANUAL
61
Pub. No. 291Y1-40720 Revision: 5
Tagout
Tagout is to attach a tag indicating a warning so
that no one will not activate the control panel that
was put in a stopped state.
Tags must include the name of the responsible
person who supervise the work or the operator who
attached the tag.
After completing the work, the operator shall fill in
the work completion date and time and signature in
the work management table and report it to the user
company or supervisor.
The user company or supervisor must prepare a
work management table in advance. If a work that
requires tagouts arises, the user company or
supervisor must record the working classification,
person in charge, and tag number in a table, and
keep the record.
Fig. 1-6 Lockout/Tagout (Example)
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 86) 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.
ON
OFF
DANGER
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