JLG E45A_AJ Operator Manual - Manual (Page 30)

SECTION 3 - USER RESPONSIBILITIES AND MACHINE CONTROL
3-2 – JLG Lift – 3120883
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 the users experience with
similar types of equipment.
Placards
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 for the express
purpose of alerting personnel of potential hazards consti-
tuted by the operating characteristics and load limitations
of the machine. See FOREWORD for definitions of the
above placards.
Capacities
Raising boom above horizontal with or without any load in
platform, is based on the following criteria:
1. Machine is positioned on a smooth, firm and level
surface.
2. Load is within manufacturers rated design capacity.
3. All machine systems are functioning properly.
4. Proper tire pressure.
5. Machine is as originally equipped from JLG.
Stability
This machine as originally manufactured by JLG Indus-
tries, Inc., when operated within its rated capacity on a
smooth, firm and level supporting surface and in accor-
dance with the instructions provided on the machine and
in this manual, provides a stable machine for all positions.
Machine stability is based on two (2) conditions which are
called FORWARD stability and BACKWARD stability. The
machine’s position of least FORWARD stability is shown in
Figure 3-1 and its position of least BACKWARD stability is
shown in Figure 3-2.
TO AVOID FORWARD OR BACKWARD UPSET, DO NOT OVER-
LOAD MACHINE, OPERATE ON OUT-OF-LEVEL SURFACE OR
OPERATE WITH THE BOOM UPRIGHT TILTING. (SEE FIGURE 4-2.
UPRIGHT POSITIONING).
3.4 CONTROLS AND INDICATORS
These machines are equipped with control panels that
use symbols and words to indicate control functions. On
some machines, the control panels may use symbols
only. Refer to Table 3-1 for these symbols and their corre-
sponding functions.
Ground Control Station
DO NOT OPERATE FROM GROUND CONTROL STATION WITH
PERSONNEL IN THE PLATFORM EXCEPT IN AN EMERGENCY.
PERFORM AS MANY PRE-OPERATIONAL CHECK AND INSPEC-
TIONS FROM GROUND CONTROLS AS POSSIBLE.
NOTE: When machine is shut down the Platform/Ground
Select switch and Emergency Stop must be posi-
tioned to OFF.
1. Power/Emergency Stop Switch.
A two-position red mushroom shaped switch fur-
nishes power to PLATFORM/GROUND SELECT
switch when pulled out (on). When pushed in (off),
power is shut off to the PLATFORM/GROUND
SELECT switch.
2. Platform/Ground Select Switch.
A three position, key operated switch supplies
power to the platform control console when posi-
tioned to PLATFORM. With the switch key held in the
GROUND position, power is shut off to platform and
only ground controls are operable. When released
from GROUND position the switch spring returns to
the (off) position.
NOTE: With PLATFORM/GROUND SELECT switch in the
center position, power is shut off to controls at both
operating stations.