1 SAFETY
Mitsubishi Diesel Engine S12R OPERATION & MAINTENANCE MANUAL
32
Pub. No. 291Y1-40720 Revision: 5
Precautions for Covers
Precautions for Fire Sources
Precautions Regarding the
Environment
Precautions for Protective Gears
Do not attempt to open the side cover
of the crankcase before the engine
surface cools down to room
temperature.
* Opening the cover when the engine is hot
allows fresh air to flow into the crankcase, which
may cause oil mist to ignite and explode.
Do not remove the heat shields
(laggings) from the intake and
exhaust systems.
* If you touch it, you may get burned by heat.
* If any of these heat shields (laggings) have
been removed to perform inspection and
maintenance, be sure to install them after the
work is completed.
When the engine is coupled to driven
equipment, be sure to provide
protective covers over the driving
parts such as the connecting belts
and couplings that are exposed.
* Otherwise, belts and devices may fly apart and
result in a serious personal injury.
Before starting the engine, make sure
the protective covers of the engine
are correctly installed.
* If you get caught in rotating parts, you may get
seriously injured.
Do not use flames near the engine.
* It may cause a fire.
When working with flammable
substances such as fuel, engine oil,
coolant (LLC), grease, rust preventive
oil, anti-corrosive agent, etc., use
explosion-proof lighting equipment
without fire.
* Otherwise, they may catch fire, which causes
an explosion.
Do not operate the engine in a poorly
ventilated place.
* Otherwise, it may cause carbon monoxide
intoxication and lead to death at the worst.
Clean the engine and the surrounding
area to remove dust, dirt and other
foreign substances.
* Otherwise, entangled foreign objects in the
engine may cause a fire or failure.
When draining oil or replacing oil
filters, be sure to wear working
gloves.
* Hot engine oil and parts could cause burns.
When working by using compressed
air, wear protective glasses.
* Not wearing or wearing protective gears
incorrectly may result in serious injury.
Wear suitable personal protective
equipment according to the
workplace or the kind of work.
• When operating, inspecting or
maintaining the engine, wear a hard
hat, a face shield, safety shoes, a
dust mask, gloves, ear plugs and
other personal protective
equipment as needed.
* Not wearing or wearing protective gears
incorrectly may result in serious injury.
Always wear ear plugs when entering
the machine room (engine room).
* Otherwise, noise may cause a hearing loss.
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