Hitachi EX1200-7 Workshop Manual page 37

Hydraulic excavator
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Clean up Flammable Materials:
 Spilled fuel and oil, trash, grease, debris, accumulated coal
dust, and other flammable materials may cause fires.
 Prevent fires by inspecting and cleaning the machine
daily, and by removing adhered oil or accumulated
flammable materials immediately. Check and clean
high temperature parts such as the exhaust outlet and
mufflers earlier than the normal interval.
 Do not wrap high temperature parts such as a muffler or
exhaust pipe with oil absorbents.
 Do not store oily cloths as they are vulnerable to catching
fire.
 Keep flammable materials away from open flames.
 Do not ignite or crush a pressurized or sealed container.
 Wire screens may be provided on openings on the engine
compartment covers to prevent flammable materials
such as dead leaves from entering. However, flammable
materials which have passed through the wire screen
may cause fires. Check and clean the machine every
day and immediately remove accumulated flammable
materials.
Check Key Switch:
 If a fire breaks out, failure to stop the engine will escalate
the fire, hampering fire fighting.
Always check key switch function before operating the
machine every day:
1. Start the engine and run it at slow idle.
2. Turn the key switch to the OFF position to confirm that
the engine stops.
 If any abnormalities are found, be sure to repair them
before operating the machine.
Check Heat Shields:
 Damaged or missing heat shields may lead to fires.
 Damaged or missing heat shields must be repaired or
replaced before operating the machine.
 If hydraulic hoses are broken while the engine cover is
open, splattered oil on the high temperature parts such
as mufflers may cause fire. Always close the engine cover
while operating the machine.
Check Emergency Engine Stop Switch:
 If a fire breaks out, failure to release pressurized air inside
the hydraulic oil tank will escalate fire, hampering fire
fighting.
 Check the emergency engine stop switch function every
250 hours:
1) Start the engine and run it at slow Idle.
2) Press the emergency engine stop switch.
3) Confirm that engine stops and that pressurized air inside
the hydraulic oil tank is released (a hissing sound should
be heard).
 If any abnormalities are found, be sure to repair them
before operating the machine.
WKAA90-EN-00
SAFETY
SA-31

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