213201ACA SJ40 T+, SJ45 T+, SJ61 T+, SJ66 T+
32
Section 3 – Familiarization Features and devices
FAMILIARIZATION
3.4-2 Drive speed
The drive speed depends on the MEWP configuration
(lowered travel position/elevated travel position).
When the MEWP is in the elevated travel position, the
speed is slower than the speed in the lowered travel
position. Refer to Section 7.4.
3.4-3 Drive direction
The drive function operates in relation to the general
orientation of the turret counterweight on the chassis
(i.e., when the controller handle is forward, the
counterweight faces forward). Thus, the MEWP will
move in the general direction of the controller handle
movement.
3.4-4 Tilt switch
The tilt switch is in the base control console. When the
MEWP tilts more than a predetermined limit:
▪
an alarm makes a sound
▪
a light illuminates
▪
the boom movement and drive functions are
disabled (refer to Section 3.4-5).
WARNING
Tip-over hazard. When the MEWP tilts more than a
predetermined limit, the alarm makes a sound, and
the light illuminates. The platform must be lowered
and retracted immediately. Refer to Section 6.2 for
the instructions on how to recover from an inclined
position. If you do not obey, there is a risk of death
or serious injury.
3.4-5 Function restrictions when the
MEWP is tilted
Mode/Condition
Indicator
Light
Audible Alarm Restrictions
Emergency Power
(Platform)
Emergency Power
(Base)
Lowered travel position, tilted Disabled Disabled No restriction Enabled Enabled
In lowered travel position, tilted,
moving into elevated travel
position (at the limits of the lowered
travel position)
Enabled Enabled
Boom Extension,
Boom Up
Enabled Enabled
Elevated travel position, tilted Enabled Enabled Drive disabled Enabled Enabled
1952AA
NOTE
If you reset power to the controls (i.e. push and pull the emergency-stop button) when the MEWP is tilted, and
at the limits of the lowered position, the MEWP will be in the “tilted while elevated” condition.
3.4-6 Platform load sensing system
The platform load-sensing system prevents normal
MEWP movement when the platform is overloaded
and in a stationary position.
The boom position (extension and angle) and the
capacity derate switch position have an effect on the
platform capacity. Each boom position zone (high-
capacity zone or low-capacity zone) has a different
capacity. Refer to the platform capacity label(s) for the
maximum platform capacity of each zone.
WARNING
If the platform is overloaded because of contact
with an overhead obstruction, do one of the steps
that follow:
▪
Remove the obstruction from the platform.
Then after four-seconds, you can operate the
normal functions.
▪
Use the emergency-power unit to release the
platform from the obstruction (refer to
Section 3.4-7).
WARNING
Fall hazard. Do not try to free a snagged platform
with the base controls until you remove all
personnel from the platform. If you do not obey,
there is a risk of death or serious injury.
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