4 Operation
Lifting
6210_810-002
2
3
Triplex lift mast (variant)
During lifting, the inner lift cylinder moves up
to free lift (3), and then the outer lift cylinders
raise the inner lift mast up to the max. height
(2).
DANGER
Risk of accident due to collision of the lift mast or
load with low ceilings or entrances.
– Note that the inner lift mast or load may be higher
than the fork carriage.
– Note the heights of ceilings and entrances.
Malfunctions during lifting mode
Incorrect extension sequence
DANGER
Risk of accidents!
In the case of Hi-Lo lift masts (variant) and triplex lift
masts (variant), an incorrect extension sequence
may occur, i.e. the inner lift mast may extend
before the free lift is complete. As a result, the
overall height is exceeded and damage may occur
in passageways or from low ceilings.
An incorrect extension sequence may, for
instance, result from:
• The hydraulic oil temperature being too low.
• Blocking of the fork carriage in the inner lift
mast.
• Blocking of the free lift cylinder.
• Blocking of the chain roller on the free lift
cylinder.
– If the hydraulic oil temperature is too low,
slowly actuate the lift mast functions several
times in order to raise the oil temperature.
In the event that the fork carriage is blocked
in the inner lift mast, or the free lift cylinder
or chain roller are blocked, the cause of the
blockage must be eliminated before resuming
work.
– Notify your service centre
150
174749 EN - 03/2017
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