Use and maintenance manual Self-propelled aerial platforms Page 19
5.1.1
Drive and steering
5.1.1.1
Drive
To drive the machine it is necessary to carry out the following operations in sequence:
a)
press “dead-man” button
ZD
(or pedal
ZE
– Optional) at platform; its activation is signalled by a steady green led
O
;
when a steady green led lights up, “dead-man” button
ZD
can be released;
b)
within 2 seconds (10 seconds if pedal
ZE
is used) from the green steady led
O
lighting up, set the proportional
joystick control
A
forward for forward drive or backward for reverse drive.
WARNING!!
Drive and steering controls can take place at the same time but they are interlocked with other platform
movement controls (lifting/lowering/extraction/retraction/levelling jacks).
Drive control is active only if drive enable green warning light (R) is ON. If it is OFF, drive control is
inhibited. See paragraph “Warning lights”.
With platform completely lowered, operating the drive speed selector
F
, and/or differential locking button
L
,
different drive
speeds can be selected. Due to the rigid frame of the machine, when driving on uneven grounds, one of the two driving
wheels may be lifted thus absorbing all oil capacity and idling. In this condition the machine cannot move. To overcome this
condition, press the differential locking button
L
.
NOTE: To achieve
maximum drive speed
, set speed selector
F
to position
III
, hold down the differential locking button
L
and
press down the proportional joystick
A
.
To operate on
high ascending slopes
(e.g. while loading the machine onto a truck) set speed selector
F
to position
I
(
electric models) or III (thermic models).
To operate on
high descending slopes
(e.g. while unloading the machine from a truck) set speed selector
F
to position
I
(
all models).
With lifted platform, safety drive speed is automatically enabled, therefore neither speed selector
F
nor differential locking
button
L
are active.
IT IS FORBIDDEN to drive the unit when the platform is lifted unless the ground is flat and steady.
WARNING!! The differential locking press-button (L) is to be used by the operator to drive the unit on uneven
grounds, if one of the driving wheels is lifted and absorbs the whole traction power and to perform rapid
straightforward movements. Do not hold down this press-button while steering.
5.1.1.2
Steering
To steer, press buttons
A1
or
A2
located on the drive proportional joystick control (press the right button for right steering and
vice versa). Also the steering control is enabled by the “dead-man” button (or “dead-man” pedal - Optional) and is possible
only if:
-
the enabled control station green warning led
O
lights up steady;
-
drive enable green warning led
R
is ON.
