JLG 3969electric Operator Manual - Manual (Page 24)

SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL
3-2 – JLG Sizzor– 3120880
Capacities
Raising platform above horizontal with or without any load
in platform, is based on the following criteria:
1. Machine is positioned on a smooth, firm and level
surface.
2. Load is within manufacturers rated design capacity.
3. All machine systems are functioning properly.
Stability
This machine as originally manufactured by JLG when
operated within its rated capacity on a smooth, firm and
level supporting surface provides a stable aerial platform
for all positions.
3.4 CONTROLS AND INDICATORS
Machines are equipped with control panels that use
symbols and words to indicate control functions. On some
machines, the control panels may use symbols only. Refer
to Figure 3-5., Symbols for these symbols and their
corresponding functions.
Ground Control Station
ONLY OPERATE FROM THE GROUND CONTROL STATION WITH
PERSONNEL IN THE PLATFORM IN AN EMERGENCY.
FOR PERFORMING AS MANY PRE-OPERATIONAL CHECKS AND
INSPECTIONS FROM GROUND CONTROLS AS POSSIBLE.
NOTE: When machine is shut down for overnight parking or
battery charging, the Emergency Stop switch must
be positioned to OFF to prevent draining the batter-
ies.
1. ENABLE SWITCH - On machines built before serial
number 020071522 the enable switch must be
depressed and released before activating the lift
function. A built in timer shuts off power to this func-
tion if it is not activated within 3 seconds after the
enable switch is released. In addition, this timer will
shut off power to the lift function 3 seconds after it is
deactivated, making it necessary to depress and
release the enable switch before activating lift again.
On all machines built after, and including, serial
number 020071522 the enable switch must be
depressed and held for the duration of lift. The
enable switch works in conjunction with the lift
switch only.
NOTE: On machines built before serial 202271522Holding
enable button "IN" while operating lift will cause func-
tion to lift very slow.
2. PLATFORM/GROUND SELECT SWITCH - A three
position, key operated switch supplies power to plat-
form control console when positioned to platform.
With the switch key held in the ground position,
power is shut off to platform and only ground con-
trols are operable. When released from ground posi-
tion the switch spring returns to the (off) position.
NOTE: With Platform/Ground Select in center position,
power is shut off to controls at both operating sta-
tions.
3. LIFT SWITCH - A three position, momentary contact
lift control switch provides raising and lowering of
the platform when positioned to up or down.
4. HOURMETER - The hourmeter indicates the number
of hours the machine has been operated.
5. BATTERY INDICATOR AND HOURMETER (If
Equipped) - Provides a visual indication of the con-
dition of the batteries’ charge. The hourmeter to indi-
cate the number of hours the machine has been
operated.
Platform Control Station
1. ENABLE SWITCH - On machines built before serial
number 020071522 the enable switch must be
depressed and released before activating the drive
and lift functions. A built in timer shuts off power to
these functions if they are not activated within 3 sec-
onds after the enable switch is released. In addition,
this timer will shut off power to the drive and lift func-
tions 3 seconds after they are deactivated, makin git
necessary to depress and release the enable switch
before activating drive or lift again. On all machines
built after, and including, serial number 020071522
the enable switch must be depressed and held for
the duration of lift. The enable switch works in con-
junction with the lift switch only.
2. EMERGENCY STOP - A two-position red mushroom
shaped switch furnishes power to Platform Controls
when pulled out (on). When pushed in (off), power is
shut down to the platform functions.
3. TILT ALARM WARNING HORN (If Equipped) - The tilt
alarm warning horn is activated by the tilt alarm
switch when the chassis is on a slope (over 1.5
degrees).
NOTE: TILT ALARM AND WARNING LIGHT (If Equipped) - A
red warning light on the control console that lights
when the chassis is on a slope (over 1.5 degrees)
.
Updated 3-8-00