Section 4 – COLD WEATHER OPERATION Mini-Crawler Crane M A E D A
4-14 3/2019 MC305C-3
Fig. 4-30
Cautions under Cold Weather
WARNING!
• Remove snow from and defreeze the slew
gear, boom and winch related parts, and
check the movements before work.
• Warm up enough.
• Attempt to operate the operation levers
and switches without enough warm-up
causes the Machine to react dull, and may
result in unexpected accidents.
• Avoid acutely accelerating the engine
during short time after starting the engine.
• Increase the oil temperature of the
hydraulic circuit by relieving the oil
pressure (let the pneumatic oil to escape to
the hydraulic oil tank by raising to above
the hydraulic circuit set pressure) by using
operation lever. Doing so improves the
Machine reactions and prevents improper
operations.
• If the battery fluid is frozen, do NOT charge
battery or start the engine using other
power source.
• Such act may cause the battery to catch
fire.
• Before charging or starting up using other
power source, defreeze the battery fluid
and check that failures such as battery
fluid leak do not exist.
• After end of the work, wipe off and apply
wraps if substances such as condensation,
snow or mud are stuck to the wire harness,
connector (1), switches, sensors or similar
part.
Fig. 4-31
Fig. 4-32
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