JLG 15SP Operator Manual - Manual (Page 35)

SECTION 4 - MACHINE OPERATION
3120774 – JLG Lift – 4-1
SECTION 4. MACHINE OPERATION
4.1 MACHINE DESCRIPTION
SP machines are manually propelled machines, with a 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 sections are propor-
tionally extended and retracted using steel chains and cables.
Hydraulic pressure is supplied to the lift cylinder by an electrically
powered hydraulic pump. The platform may be raised only when
lift is positioned on smooth, firm, level surface with the floor stop
set. The SP personnel lift’s intended purpose is to provide person-
nel access to areas above ground level.
The SP personnel lift has a primary operator control station in the
platform. From this control station the operator can raise and
lower the platform. A ground control station is also provided. This
station contains a keyed power on/off switch, an emergency stop
button and an emergency/manual decent valve which enables the
platform to be lowered to the ground in an emergency, if the oper-
ator in the platform is unable to do so, or if a power failure should
occur.
Instructions and warnings are posted adjacent to both operator
control stations and at other places on the machine. It is extremely
important that the user/operator know what instructions and warn-
ings are placed on the machine and in the manual. And that these
instructions and warning’s be reviewed periodically. The JLG per-
sonnel 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 Mainte-
nance Manual and all job-site and government rules and regula-
tions.
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.
Any evidence of lack of maintenance, malfunction, excessive wear,
damage or modification to the machine must be reported immedi-
ately to the machine owner, the job-site supervisor or safety man-
ager and the machine must be taken out of service until all
discrepancies are corrected.
The JLG SP personnel lift is not intended to be used to lift material
other than hand-picked stock or supplies. 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 is to 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 total platform capacity.