SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL
3-6
– JLG Lift –
3120854
Platform Control Station
1.
Emergency Stop Switch
- A two-position, red,
mushroom-shaped emergency stop switch func-
tions to provide power to the platform control station
and also to turn off power to the platform function
controls in the event of an emergency. With the
power selector switch positioned to platform, power
is turned on by pulling the switch out (on), and is
turned off by pushing the switch in (off). Turning the
emergency stop switch off and then on again will
reset the smart system if a system fault has occurred
and the machine has shut down.
2.
Membrane Switch Panel
- The function switches at
the platform control station are an integral part of a
membrane switch panel, which contains switches
for drive, high drive, lift, powered deck extension (if
equipped), and posi-trac, plus a red tilt indicator
light (if equipped). The drive, lift and powered deck
extension function switches have a small green light
indicator beside them which is illuminated when that
function is active. The function switch light indicators
will flash once or twice, then go out, when the plat-
form emergency stop switch is turned on. If the light
indicators fail to flash or if they fail to stop flashing,
re-cycle the emergency stop switch. To activate the
drive, lift, and powered deck functions, press the
applicable function switch, then activate the joystick
within three seconds to operate the function. If the
joystick is not activated within three seconds, power
is turned off to the function switch and the switch
must be pressed again. The posi-trac and high drive
functions are used in conjunction with the drive func-
tion. Do not try to operate the drive, lift, and powered
deck extension functions simultaneously. If the drive,
lift, and powered deck extension functions are
selected simultaneously, no function will operate. If
this occurs, pause, then press only one of the func-
tion switches to activate the function. Refer to the fol-
lowing paragraphs for more information about the
function switches.
3.
Controller (Joystick)
- The joystick controls three
functions: speed, direction, and powered deck
extension (if equipped). The joystick is used in con-
junction with the trigger switch and controls the
drive, high drive, lift, and powered deck extension
switches to control speed and direction for the
selected function. The drive, high drive and posi-trac
functions may be operated simultaneously, but the
drive, lift, and powered deck extension functions
must be operated independently of each other. If the
drive, lift, and powered deck extension functions are
selected simultaneously, no function will operate. If
this occurs, pause, then press only one of the func-
tion switches to activate the function. To operate the
joystick, squeeze the red trigger switch, then posi-
tion the joystick to forward or reverse, as desired
5.
Steer Switch
- The thumb-operated steer switch,
located on top of the joystick, works in conjunction
with the trigger switch and activates the steer wheels
in the direction the switch is moved (left or right).
6.
Drive Switch
- The drive switch, when used in con-
junction with the joystick, provides for driving the
machine in forward or reverse. Drive is activated by
pressing the drive switch, in conjunction with the
trigger switch, and moving the joystick forward (for-
ward) or backward (reverse). Drive speed is deter-
mined by the distance the joystick is moved forward
or backward. Increased drive speed is possible
when the high drive speed switch is pressed either
simultaneously with the drive switch or while operat-
ing the drive function. The drive switch is part of the
enable circuit, which provides power to the joystick
and the drive function for 3 seconds when the drive
switch is pressed. If the joystick is not activated
within 3 seconds, the drive switch must be pressed
again before activating the joystick. When the joy-
stick is returned to the center off position, the opera-
tor has 3 seconds to re-activate the joystick or select
another function before power is removed by the
enable circuit. In addition, the posi-trac switch can
be engaged while operating the drive function to
give a more evenly distributed oil flow to each drive
motor. Do not try to operate the drive, lift, and pow-
ered deck extension functions simultaneously. If the
drive, lift, and powered deck extension functions are
selected simultaneously, no function will operate. If
this occurs, pause, then press only one of the func-
tion switches to activate the function
NOTE:
The machine is equipped with a Pothole Protection
System which lowers automatically when the plat-
form is raised. If the Pothole Protection System does
not fully lower, the DRIVE function is cut out until the
platform is completely lowered.
