Aerial work platform
ZED 20.3 HV
7
COD. UM0284_GB | REV. 0.0 | ED: 09/17
Chapter 5
GB
SAFETY DEVICES
5.9
Stabilisation control device
The stabilisation control device consists of two micro switches (Fig. 5.7, 1) and (Fig. 5.7, 2), found
on each stabiliser; a micro-switch (Fig. 5.7, 3) found on the side of the front stabiliser beams; and a
micro-switch (Fig. 5.7, 4) found on the vehicle’s rear springs.
Micro-switch (Fig. 5.7, 1) indicates the complete closure of the plate for moving on the street; micro-
switch (Fig. 5.7, 2) controls resting on the ground; micro-switch (Fig. 5.7, 3) controls the complete
extension of the stabiliser; and micro-switch (Fig. 5.7, 4) indicates minimum stabilisation.
4
4
3
2
2
1
1
Fig.
5.7
SAfETY DEViCE fUnCTiOnAliTY CHECK
•
When the stabilisers are properly extended, the four LEDs, 1, 2, 3 and 4 next to the stabilisation
controls (see Fig. 4.3) light up, indicating that the micro switches are working correctly (Fig.
5.7, 2) and (Fig. 5.7, 4);
•
retract all the stabilisers and check that the LED in the cab (see Fig. 4.7
4) is illuminated,
indicating that the micro switches are operating correctly (Fig. 5.7, 1).
5.10
Turret rotation control device
The turret rotation control device consists of one micro switch (Fig. 5.8, 1) and two potentiometers (Fig.
5.8, 2). The micro-switch is found within the turret, on the articulated boom lifting cylinder. It indicates
the complete closure of the platform, inhibiting the turret rotation manoeuvre. The two potentiometers
are found on the slewing ring and, acting at the same time as the micro-switch, they monitor the
movements of the mobile work platform, stopping it from colliding with the cab.
2
1
Fig.
5.8
