Mitsubishi Electric UM 10t, Instruction Manual

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Safety Precautions That Must Be Observed
■
The following table explains the types of hazards and their degree of
seriousness associated with incorrect operation or handling.
! Danger
Indicates a situation of immediate danger that may result in death or
serious injury if not avoided.
! Warning
Indicates a dangerous situation that may result in death or serious injury
if not avoided.
! Caution
Indicates a dangerous situation that may result in minor or moderate
injury or in only a property loss if not avoided.
1. Safety precautions for handling in general
Danger
!
●
Control the duration of the product life. Totally overhaul the product or replace it with a new one before reaching the end
of the life.
Warning
●
Do not allow anyone to operate the crane if he or she does not fully understand the contents of the instruction manual or
the meaning of the warning signs.
●
Anyone without the required regulatory qualification must not operate the crane or arrange slings to lift a load. Do not
allow such a person to do the same.
!
●
Be sure to check the crane and associated items before starting the work. Be sure to carry out the periodical voluntary
inspections.
Caution
!
●
Keep the instruction manual until the product is no longer used. Make the instruction manual available in a place for ready
perusal at any time.
2. Installation and mounting
Danger
!
●
Be sure to provide both ends of the rails of the cross and longitudinal travel tracks with stoppers.
●
Check that the structure where the crane is to be installed has the required strength.
Warning
!
●
Make absolutely sure that only a specialized subcontractor or persons with the expert knowledge are allowed to install the
crane.
●
Install the crane only in an environment of the specified conditions. Avoid rain or water that the crane is not designed for.
●
Be sure to ground the crane. In addition to the grounding, provide the electrical circuit with a ground fault circuit breaker.
3. Operation
Danger
●
Check that the brake device operates normally before starting to use. Do not operate the crane if the brake device does not
operate normally.
●
Do not operate the crane if the crane is damaged or if it generates abnormal noise or vibration.
●
Never operate the crane if the wire rope has any of the following defects.
⋅
The wire rope is kinked, deformed or corroded.
⋅
If more strands than specified are broken or worn out.
●
Do not attempt arc welding to the suspended load.
●
Do not connect the ground cable of an arc welding machine to the wire rope.
●
Never let the electrode of an arc welding machine come in contact with the wire rope.
●
Never operate the crane if the sling device stopper on the hook is broken or damaged.
●
Do not let the crane main body or the current collector (trolley) run into the stopper or the building structure.
●
Do not operate the crane if the wire rope is not wound on the wire drum normally.
!
●
Stop operating the crane immediately if the crane operates in the different direction from the intended pushbutton
instruction.
The crane operates incorrectly or abnormally, possibly causing an injury.
If you have to press any of the pushbuttons harder than usual, the particular pushbutton switch may be broken. Stop
operating the crane. Disassemble the pushbutton switch for inspection.
●
If an earthquake occurs while operating the crane, immediately lower the load on the floor and turn off the crane power.
■
Explanation on symbols
Prohibition
(Things you must not do or attempt by
all means.)
!
Instruction
(Things you must do by all means.)
Be absolutely sure to ground
the crane.
!
!
!
!
!
!