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3.1.6.
Check the operation of the safety limit switches
Test the operation of the safety limit switches that prevent the movements of the boom and
the outriggers as follows:
1. The lift is in the transport position with the outriggers in the upper position, and the driving
device connected.
2. Lift the boom via the controls in the chassis control centre.
The boom must not operate in any position of the selector switch.
3. Lower the outriggers to the operating position of the lift
4. Using the controls in the chassis control centre, lift the boom so much that it raises from
the support
5. Drive the outriggers.
The outriggers must not operate in any position of the selector switch.
3.1.7.
Check the operating controls
Check the operating controls of the platform control centre and the chassis control centre:
• check the overall condition of the operating controls
• test all the movements. Ensure that all the movements stop when the control lever is
released.
3.1.8.
Check the operation of the emergency descent, the emergency stop and the
sound signal
Test the operation of the emergency stop, the emergency descent system and the sound
signal from both the chassis control centre and the platform control centre.
• lift the boom about 1-2 metres (using lever 8) and extend the telescope 1-2 metres (using
lever 9) keeping the emergency stop button depressed – the movement shall now stop
•
using the emergency descent, retract first completely the telescope, then lower the boom
• pull up the emergency stop button
• test the operation of the sound signal
3.1.9.
Decals, stickers and signs
Check that all the signs, warning decals and pictorials on the control centres are in place,
intact and clean.
3.1.10. Instruction manuals
Check that the user manuals accompanying the lift are legible.