Maeda CC423S-1, Руководство по эксплуатации

Страница: 38 / 278

30
2.4 CAUTIONS DURING CRANE OPERATION
INSPECTION BEFORE STARTING WORK
Check that the safety devices and crane operate properly.
• Operate each of the operation levers, pedals and switches under no load, and check that operations
take place without any abnormality.
Repair immediately if any abnormality exists.
• Check such safety devices as the moment limiter (overload prevention device), over-hoisting
prevention device and over-lowering prevention device to ensure that they function normally.
CAUTIONS WHEN HANDLING THE MACHINE MONITOR
• Use / store the machine monitor under the following ranges of ambient temperature.
Operating temperature: -30 to 60 °C Storage temperature: -30 to 80 °C
• Avoid direct sunlight so that the ambient temperature in the region of the machine monitor does not
exceed the above range.
• Avoid locations with strong acid or alkaline atmosphere as much as possible. Otherwise, unexpected
failures may occur.
• Do not allow external objects etc. to impact the machine monitor body.
Such attempt may damage the case and may result in failures and improper operations.
• Do not press the screen of the machine monitor with excessive force or press with sharp objects such
as the tip of a screwdriver. This may damage the screen and result in failure or incorrect operation.
• Do not disassemble the machine monitor. Such attempt may result in failures and improper
operations.
CAUTIONS WHEN SETTING MOMENT LIMITER
• In the moment limiter, the moment is calculated on the assumption that the machine is placed
horizontally.
If crane work is performed without the machine being placed horizontally, no forecast or warning is
issued even when the rated total load is approached.
Never fail to check the inclination of the machine by using the level.
• When using the moment limiter, check to ensure that the indicators of boom angle, boom length and
actual load are interlocked with the crane motion to give correct values. If the crane is used with no
correct indication given, correct measurement results cannot be obtained, causing serious physical
injury due to tumbling or damage of the machine.
• When using the moment limiter, be sure to check that the setting of wire falls of the moment limiter
matches the wire falls of the crane. If the number of falls of wire does not match, be sure to change
either the setting of number of falls of wire of the moment limiter or the number of falls of wire of the
crane, to make both match with each other. If used without matching the number of wire falls, correct
measurement results cannot be acquired, possibly leading to breakage of the wire rope and serious
bodily injury.
• Do not change the setting carelessly during measurement with the moment limiter. Otherwise, correct
measurement results cannot be obtained, causing serious physical injury due to tumbling or damage
of the machine.
CAUTIONS FOR SELECTING A PLACE TO INSTALL
Always place the machine on a level, stable and solid ground.
It is dangerous to install on any of the following places:
• Simple asphalt pavement
• Thin concrete pavement
• Flagstone pavement
• Areas where under the pavement surface is hollow due to water erosion and the top soil appears to be
hard but soft in the ground
• Soft ground near a road shoulder or dug hole
• Slope