Still R70-40T, Operating Instructions Manual

Page: 106 / 288

5
Operation
Lifting
7071_003-059
3
2
Triplex mast (special equipment)
When the "lift-lower" operating lever is moved
backwards, the inner cylinder moves up to
(3)free lift, and then the outer cylinders directly
raise the inner mast up to the max. (2)height.
NOTE
When raising above the free lift, the fork carri-
age always remains at the upper edge of the
extending mast tip.
DANGER
Risk of accident!
With low ceilings, be aware that the carried load can
project over the fork carriage. The fork carriage can
be higher than the load.
Malfunction during a lifting operation
Incorrect extension sequence
DANGER
Risk of accident!
In the case of triple masts (special equipment), an
incorrect extension sequence can occur, i.e. the in-
ner mast extends before the free lift is complete. As
a result, the overall height is exceeded and damage
may occur with passageways or 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
mast.
• Blocking of the free lift cylinder.
• Blocking of the chain roller for the free lift
cylinder.
– If the hydraulic oil temperature is too low,
slowly actuate the mast functions several
times in order to raise the oil temperature.
In the event that the fork carriage in the inner
mast, the free lift cylinder or the chain roller for
the free lift cylinder is blocked, the cause of the
blocking must be eliminated before you can
continue with work.
96 171673 [EN]