JLG 3369 electric, Operator'S And Safety Manual

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SECTION 4 - MACHINE OPERATION
3120880 – JLG Sizzor – 4-1
SECTION 4. MACHINE OPERATION
4.1 DESCRIPTION
This machine is a self-propelled hydraulic lift equipped
with a work platform on the top of an elevating ‘sizzor’
mechanism. The Sizzor Lift’s intended purpose is to posi-
tion personnel with their tools and supplies at positions
above ground level, and can be used to reach work areas
located above machinery or equipment positioned at
ground level.
The JLG Sizzor has a primary operator Control Station in
the platform. From this Control Station, the operator can
drive and steer the machine in both forward and reverse
directions. The machine has a Ground Control Station
which will override the Platform Control Station. Ground
Controls operate lift up and down and are to be used in an
emergency to lower the platform to the ground should the
operator in the platform be unable to do so. Ground Con-
trol is also to be used in Pre-Operation check.
Instructions and hazard alerts are posted on to both oper-
ator control stations and at other places on the machine. It
is extremely important that operators know what instruc-
tions and hazard alerts are placed on the machine, and
review these periodically so that they are fresh in their
minds.
The JLG Sizzor Lift is designed to provide efficient and
safe operation when maintained and operated in accor-
dance with warnings on the machine, the Operators &
Safety, Service and Specification Manual and all jobsite
and government rules and regulations. As with any type of
machinery, the operator is very important to efficient and
safe operation. It is absolutely necessary that the JLG Siz-
zor Lift be regularly maintained in accordance with the
seperate Service and Maintenance Manual, and that any
evidence of lack of maintenance, malfunction, excessive
wear, damage or modification to the machine be reported
immediately to the machine owner or the jobsite supervi-
sor or safety manager and that the machine be taken out
of service until all discrepancies are corrected.
The JLG Sizzor Lift is not intended to be used to lift mate-
rial other than supplies which personnel in the platform
require to do their job. Supplies or tools which extend out-
side the platform are prohibited. It must not be used as a
forklift, crane, support for overhead structure, or to push
or pull another object.
The JLG Sizzor Lift is powered using a hydraulic pump
and cylinders for various functions. The hydraulic compo-
nents are controlled by electrically activated hydraulic
valves using switches and control levers. The speeds of
functions controlled by control levers are variable from
zero to maximum speed depending upon the position of
the function speed control. Functions controlled by toggle
switches are either on or off.
The JLG Sizzor is a two wheel drive machine with drive
power being supplied by an electric motor at each drive
wheel. Each drive wheel is supplied with an electrically
released, spring applied brake. These brakes are auto-
matically applied any time the Drive switch is returned to
neutral position.
The capacity of the model 3369 electric is 455kg (1000 lb)
and the capacity of the model 3969 electric is 340kg (750
lb),uniformly distributed in the center of the platform. This
means that the total combined weight of personnel, tools
and supplies must not exceed the above figures.
4.2 GENERAL
This section provides the necessary information needed
to operate the machine. Included in this section are proce-
dures for traveling, steering, parking, platform loading and
transporting. It is important that the user read and under-
stand the proper procedures before operating the
machine.
4.3 MOTOR OPERATION
Platform/Ground Select Switch
The Platform/Ground Select switch functions to direct bat-
tery power to the desired control station. With the switch
held in the ground position battery power is supplied to
the ground control station. When the switch is in the plat-
form position, battery power is supplied to the platform
control station. When the switch is in the center (off) posi-
tion, power is cut off from all functions. The switch should
be in center (off) position when recharging the batteries or
parking the machine overnight.
Motor Activation
With the emergency stop switch pulled out (on), and the
power selector switch in the appropriate position, the
emergency stop switch in the on position (if operator is at
platform controls) depress the enable switch and activate
a function switch, the motor becomes activated and oper-
ates the desired function.
IF A MOTOR MALFUNCTION NECESSITATES UNSCHEDULED
SHUTDOWN, DETERMINE AND CORRECT CAUSE BEFORE
RESUMING ANY OPERATION.