JLG 20VP (3120727) Operator Manual - Manual (Page 35)

SECTION 4 - MACHINE OPERATION
3120727 – JLG Lift – 4-1
SECTION 4. MACHINE OPERATION
4.1 MACHINE DESCRIPTION
The JLG VP Series model line of lifts are an electric self-
propelled machine, with an aerial work platform mounted
to an elevating aluminum mast mechanism. The mast is
raised and lowered by a hydraulic cylinder extending
between mast section-1 and -2, the remaining mast sec-
tions are proportionally extended and retracted using
steel chains or cables. Hydraulic pressure is supplied to
the lift cylinder by an electrically powered hydraulic pump.
All VP Series models feature a steel base frame with swivel
caster wheels mounted on the front and fixed drive wheels
on the rear of the machine. The personnel lift’s intended
purpose is to provide personnel (with their tools and sup-
plies) access to areas above ground level.
The JLG VP lift has a primary controller in the platform.
From the platform controller the operator can drive the
unit and raise or lower the platform. Ground controls are
also provided, these controls consist of a keyed power on/
off/grnd switch, an emergency stop button, an emer-
gency/manual decent valve and a platform up/down con-
trol switch.
Instructions and warnings are posted adjacent to both
platform and ground operator control stations and at other
places on the machine. It is extremely important that the
user/operator know what instructions and warnings are
placed on the machine and in the manual. And that these
instructions and warning be reviewed periodically.
The JLG VP personnel lift is designed to provide efficient
and safe operation when maintained and operated in
accordance with instructions and warnings on the
machine, in the Operating, Safety and Maintenance Man-
ual, ANSI Responsibilities Manual and by obeying all job
site and government rules and regulations. As with any
type of machine, the operator is very important to efficient
and safe operation. It is absolutely necessary that the JLG
VP lift be regularly maintained in accordance with this
manual.
Any evidence of lack of maintenance, malfunction, exces-
sive wear, damage or modification to the machine must be
reported immediately to its owner, the job site supervisor,
or safety manager and that the machine be taken out of
service until all discrepancies are corrected.
The JLG VP personnel lift is not intended to be used to lift
material other than supplies which personnel in the plat-
form require to do their job. Supplies or tools which
extend outside the platform are prohibited except for JLG
approved receptacles. The personnel lift must not be used
as a forklift, crane, or support for overhead structure.
The total platform capacity of models 10VP, 15VP, 20VP
must be uniformly distributed in the center of the platform.
This means that the total combined weight of personnel,
tools and supplies loaded into the platform must not
exceed the platform capacity figures.
4.2 GENERAL
This section provides the necessary information needed
to operate the machine. Included in this section are proce-
dures for driving the machine, raising, lowering and load-
ing the platform, and also transporting the machine. It is
important that the user read and understand the proper
procedures before operating the machine. Although some
of the more important operating safety precautions will be
l i s t e d i n th e f o l lo w i n g p a r a g r a p h s ec t i o n s , IT I S
EXTREMELY IMPORTANT ALL SAFETY PRECAUTIONS IN
SECTION 1 - SAFETY PRECAUTIONS BE READ AND
UNDERSTOOD BEFORE OPERATING MACHINE. If a
“Daily Walk-Around Inspection”, (see Section 2-4.) has not
been performed, do so before starting set-up and opera-
tion. The operator must also be familiar with all lift controls
as described in Section 3 - User/Operator Responsibilities
and Machine Controls.