JLG 15ELI Operator Manual - Manual (Page 28)

SECTION 3 - USER RESPONSIBILITIES & MACHINE CONTROLS
3-2 – JLG Lift – 3120778
3.3 OPERATING CHARACTERISTICS AND
LIMITATIONS
General
A thorough knowledge of the operating characteristics
and limitations of the machine is always the first require-
ment for any user, regardless of user’s experience with
similar types of equipment.
Placards
(See Figures 3-4., 3-5., 3-6., 3-7. & 3-8.)
Important points to remember during operation are pro-
vided at the control stations by DANGER, WARNING,
CAUTION, IMPORTANT and INSTRUCTION placards. This
information is placed at various locations on the machine
for the express purpose of alerting personnel of potential
hazards constituted by the operating characteristics and
load limitations of the machine. See Foreword at the start
of this manual for a definition of the seriousness of each of
the above placard types. See Decal Location Figures in
this section for decals which apply to this machine.
Capacities
Raising the platform above the stowed position is based
on the following criteria:
• The machine is positioned on a smooth, firm level sur-
face.
• The load is within manufacturer’s rated capacity.
• All machine systems are functioning properly.
• The machine floor brake on the base frame is properly
set and locked in place.
Stability
This machine, as originally manufactured by JLG and
operated within its rated capacity on a smooth, firm and
level supporting surface, provides a stable aerial platform
for all platform positions.
3.4 CONTROLS AND INDICATORS
Ground Control Station (See Figure 3-1.)
NOTE: When the machine is shut down for overnight park-
ing or battery charging, be sure the POWER ON/
OFF KEY SWITCH is positioned to OFF to prevent
draining the batteries.
1. POWER ON/OFF Key Switch
A key operated power on/off switch located on the
ground control station panel controls power to all
functions on the unit. The machine will not operate
without the key inserted and turned to the ON posi-
tion. When left unattended removing key will prevent
unauthorized machine use.
2. EMERGENCY STOP Button
An emergency stop (RED button) is mounted on
both the ground control station and the platform
control panel. When the button is depressed, all
machine functions will stop. To re-activate power to
the machine, turn emergency stop button clockwise
until button is reset.
3. MANUAL DESCENT CONTROL VALVE
Machines Built Prior to S/N - 0900019526 -
(See Figure 3-1.)
This (RED knurled) knob, located on the electric/
hydraulic pump-motor unit on the ground control
station panel provides for lowering of the platform in
the event of an emergency or power failure. Turning
the valve knob to the left (counterclockwise) opens
the valve, turning the valve back to the right (clock-
wise) closes the valve.
Machines Built Since S/N- 0900019526 -
(See Figure 3-2.)
The control knob is located in the recess under the
base frame at the rear of the machine. To open the
valve (lower the platform) pull the (RED) knob on the
Figure 3-1. Ground Control Station.
EMERGENCY
STOP BUTTON
POWER ON/OFF
KEY SWITCH
MANUAL
DESCENT
CONTROL
VALVE
(MACHINES PRIOR
TO S/N- 0900019526)
HYDRAULIC
OIL
RESERVOIR