SECTION 3 – MACHINE CONTROLS, INDICATORS AND OPERATION
– JLG Lift –
3-33
When the tilt indicator warning is activated, the following
functions are affected:
- The Drive function is disabled out of stowed position.
- Mast/Jib Lift and Swinging movements switch to Creep mode
out of transport position.
- Mast Lift Up is disabled in stowed position.
- The retraction functions properly.
When the tilt indicator warning is activated, control the
machine as follows:
1.
Lower the mast.
2.
Return the platform in line with the chassis.
3.
Lower the jib.
4.
Drive the machine to a smooth, firm and level surface.
AVOID RAISING THE MAST, OPERATING THE JIB OR SWINGING WITH THE
MAST RAISED WHEN THE MACHINE IS OUT OF LEVEL. ALWAYS LOWER THE
MAST AS MUCH AS POSSIBLE BEFORE OPERATING THE JIB OR SWINGING.
Slack Chain Warning Light/Alarm
When the system detects a slack chain condition, the RED
light indicator at platform control station will illuminate and
an audible alarm will sound.
Slack chain condition is generally caused by the platform or
the jib coming to rest on an obstacle while lowering.
When the slack chain indicator warning is activated, all
machine functions, except mast and jib raising movements
are disabled.
Procedure to follow in case the slack chain indicator warning
is activated:
1.
Raise the mast or the jib (generally the reverse move
-
ment to the one that caused the alarm to be activated).
This will re-tension the chain(s) and stop the alarm.
2.
Examine surroundings to identify the cause.
3.
Perform the movement which will clear the machine
and prevent contact with the obstacle.
If the examination of the surroundings does not reveal any
possible obstacle, the alarm may have been triggered by the
telescopic mast jamming which could be due to:
- A foreign body entering the guiding system.
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