JLG 500RTS Operator Manual - Manual (Page 33)

SECTION 4 - MACHINE OPERATION
3120828 – JLG Lift – 4-1
SECTION 4. MACHINE OPERATION
4.1 DESCRIPTION
This machine is a self-propelled elevating ‘sizzor’ aerial
work platform. The Sizzor Lift’s intended purpose is to
position personnel with their tools and supplies at posi-
tions above ground level. The machine can be used to
reach work areas located above machinery or equipment.
The JLG Sizzor Lift 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 as well as raise and lower the platform. The
machine has a Ground Control Station which will override
the Platform Control Station. Ground Controls operate Lift
Up, Lift Down, and Platform Traversing, (If Equipped). The
controls are to be used only for daily check or in an emer-
gency to lower the platform to the ground should the
operator in the platform be unable to do so.
Instructions and hazard warnings are posted adjacent to
both operator control stations and at other places on the
machine. It is extremely important that operators know
what instructions and warnings 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 Maintenance 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. Owner/user/operator must be familiar with
Sections 6, 7, 8, 9, and 10 of ANSI A92.6-1990. These sec-
tions contain the responsibilities of the owner, users, oper-
ators, lessors and lessees concerning safety, training,
inspection, maintenance, application and operation. It is
absolutely necessary that the JLG Lift be regularly main-
tained in accordance with this section, and that any evi-
dence 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 machine has a manual descent system which will
allow the platform to lowered without power from the
engine/motor powered pump.
The JLG Sizzor Lift is powered using hydraulic motors and
cylinders for the various machine motions. The hydraulic
components are controlled by electrically activated
hydraulic valves using switches and the joystick controller.
The machine is equipped with an Enable Switch which
must be pressed before activating the DRIVE, LIFT or
STEER functions. The Enable Switch has a built-in timer
which shuts off power to these functions if they are not
activated within 3 seconds after Enable Switch is
depressed. The speeds of functions controlled by the joy-
stick controller are variable from zero to maximum speed
depending upon the position of the controller. Functions
controlled by toggle switches are either on or off. Higher
or lower speed is possible only when the applicable high
function speed control switch at the Platform Control Sta-
tion is used in conjunction with the drive function. All
switches at the platform are guarded to prevent inadvert-
ant operation by individual switch guards.
The JLG Sizzor is a two or four wheel drive machine with
drive power being supplied by a hydraulic motor for each
drive wheel. Each drive wheel is supplied with a hydrauli-
cally released, spring applied brake. The brakes are auto-
matically applied anytime the Drive controller is returned
to the neutral position.
The capacities of model 400RTS and 500RTS are found
on the capacity decals located on the machine. These
capacities are based on a load uniformly distributed in the
center of the platform. This means that the total combined
weight of personnel, tools and supplies must not exceed
the given capacity for a particular model.
The platform may be raised only when positioned on firm,
level and uniform surfaces. Leveling jacks, if provided, are
to assist in leveling the Sizzor Lift. The Sizzor Lift must be
level when operating on leveling jacks.