Maintenance
CHECKING THE SAFETY DEVICES
Checking the MOMENT LIMITING SYSTEM
(at every use)
At the machine start-up, the moment limiting system
runs an automatic check. In the case of troubles, the
red LED
3
will come on and the buzzer will sound to
warn of the error. The machine will enter the alarm
mode and no operation will be allowed.
To check the system manually, proceed as
follows:
- Load a weight of 1000 kg.
- Raise the boom about 30 cm above the
ground.
- Extend the telescope and check if the system
enters the alarm mode once reached the distance
indicated in the load charts for the attachment
fitted to the machine.
If the system does not enter the alarm mode,
contact the TEREXLIFT Technical Service.
SAFETY PUSHBUTTON on JOYSTICKS
Both joysticks are equipped with a safety system
(deadman system).
The red pushbutton must be held pressed down until
the end of the manoeuvre operated using the joystick.
If the button is released, the manoeuvre stops.
Do this check in the two positions: with the
turntable longitudinal and rotated 90°.
C h e c k i n g t h e J O Y S T I C K S A F E T Y
PUSHBUTTON
(at every use)
To check the efficiency of the deadman pushbutton
on the two joysticks, it is enough to attempt to operate
the joystick without pressing this button.
In this condition, the joystick shall not activate any
movement. Should that not be the case, contact the
TEREXLIFT Technical Service.
Part No. 57.0009.0404 GTH-4518ER - GTH-4020ER - GTH-6025ER 101
Operator’s Manual
First Edition - Third Printing
Summary of Contents for Genie GTH-4020 ER
Page 188: ......
