JLG 400CRT Operator Manual - Manual (Page 33)

SECTION 4 - MACHINE OPERATION
3121803 – JLG Lift – 4-1
SECTION 4. MACHINE OPERATION
4.1 DESCRIPTION
This machine is a self-propelled aerial work platform on
top of an elevating ‘scissor’ mechanism. The Scissor Lift’s
intended purpose is to position personnel with their tools
and supplies at positions above ground level. The
machine can be used to reach work areas located above
machinery or equipment positioned at ground level.
The JLG Scissor Lift has a primary operator Control Sta-
tion in the platform. From this Control Station, the operator
can drive and steer the machine in both forward and
reverse directions, raise and lower the platform and, if
equipped, operate the powered deck extension. The
machine has a Ground Control Station which will override
the Platform Control Station. Ground Controls operate lift
up and down. Ground Controls are to be used only in an
emergency to lower the platform to the ground should the
operator in the platform be unable to do so. Vibrations
emitted by these machines are not hazardous to an oper-
ator in the work platform. The equivalent continuous A-
Weighted sound pressure level at the work platform is less
than 70 dB(A).
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 Scissor Lift is designed to provide efficient and
safe operation when maintained and operated in accor-
dance with warnings on the machine, the Operating and
Safety Manual, the 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. It is absolutely necessary that
the JLG Lift be regularly maintained in accordance with
this manual and the machine 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 supervisor or safety manager and that
the machine be taken out of service until all discrepancies
are corrected.
The JLG Scissor 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 Scissor Lift is powered using hydraulic motors
and cylinders for the various machine motions. The
hydraulic components are controlled by electrically acti-
vated 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 control lever. Functions controlled by
toggle or push-button switches are either on or off. In
some instances, a function switch can be used in conjunc-
tion with the controller to give the machine a higher func-
tion speed range.
The JLG Scissor Lift is an all wheel drive machine. The
rear wheels are supplied with a hydraulic disc brake. This
brake is automatically applied any time the Drive control-
ler is returned to the neutral position.
The platform capacity of the 330CRT is 450 kg (1000 lb.)
and the capacity of the 400CRT is 360 kg (800 lb.). The
weight in the platform should be uniformly distributed in
the center of the platform. The total combined weight of
personnel, tools and supplies must not exceed the above
figures.
The platform may be raised only when positioned on firm,
level and uniform surfaces.
4.2 GENERAL
This section provides the necessary information needed
to operate the machine. Included in this section are the
procedures for starting, stopping, traveling, steering, park-
ing, platform loading and transporting the machine. It is
important that the user read and understand the proper
procedures before operating the machine.
Table 4-1. Operating Specifications
Model 330CRT 400CRT
Maximum Occupants 2 2
Maximum Workload (Capacity):
Extension Only: 450kg
120kg 360kg
120kg
Maximum Gradeability 35% / 19° 35% / 19°
Maximum Slope (Side to Side) 3° 3°
Maximum Slope (Fore and Aft) 5° 5°
Maximum Slope (Long [Australian] ) 5° 5°
Maximum Platform Height: 10m 12.1m
Maximum Tire Load Reference
Decal on
Machine
Reference
Decal on
Machine
Maximum Drive Speed 5.6kmh 5.6kmh
Approximate GVW: 4227kg 5,5071kg