OPERATING CONTROLS AND PROCEDURES 2250 OPERATOR MANUAL
3-38
Published 06-24-16, Control # 241-01
7. Move the drum handle to the rear to raise the load
(Figure 3-20
) or to the front to lower the load
(Figure 3-21
).
8. As the load nears the desired position, slowly move the
drum handle toward OFF to slow down the load. Then
release the handle to OFF to stop the load and hold it in
position (the drum brake will apply).
NOTE: For the MAX-ER 2000, drum 2 (boom hoist) cannot
be operated in Free Fall.
Liftcrane Operation—Free Fall
1. Fully apply the drum working brake for the drum to be
operated in Free Fall.
2. Turn off the drum park switch to release the drum brake,
and disengage the drum pawl (if equipped) for each load
drum.
3. Select and confirm FFALL ON for the drum to be
operated.
NOTE: The load drum will not switch to Free Fall until the
drum park is off and the selection and confirmation
steps have been performed. See E—Special
Controls and Indicators on page 3-20.
The load will not lower until the corresponding
drum pawl is disengaged. It may be necessary to
hoist the load slightly before the pawl will
disengage.
4. Increase engine speed to the desired rpm with the hand
throttle. Press the foot throttle to momentarily increase
engine speed when more power is required.
5. Move the drum handle to the rear and release the drum
brake with the brake pedal to raise the load
(Figure 3-20
).
6. As the load nears the desired position, slowly move the
drum handle toward OFF to slow down the load. Then
fully apply the drum brake with the brake pedal to stop
the load and release the drum handle to OFF.
7. The load can be lowered in one of two ways—with the
drum working brake or with hydraulic power.
a. To lower the load with the drum brake, leave the
drum handle in OFF and release the drum brake
with the pedal to lower the load at the desired
speed.
As the load nears the desired position, slowly apply
the drum brake to slow down the load. Then, fully
apply the brake to stop the load and hold it in
position.
b. To lower the load with hydraulic power, move the
drum handle to the front and release the drum brake
with the pedal. The lowering speed is controlled by
handle movement.
As the load nears the desired position, slowly move
the drum handle toward OFF to slow down the load.
DANGER
Falling Boom Hazard!
Avoid death or severe injury. The boom will fall
uncontrolled for the MAX-ER 2000, if drum 2 (boom hoist)
is switched to Free Fall.
FIGURE 3-21
Load Drum Handles
on Right Console
A420
A489
LOWERING LOAD
OFF OFF
CAUTION
Avoid Machinery Damage!
Do not turn on the park brake while lowering a load.
Damage to the pawl or drum may result.
Stop the drum with the brake pedal and then turn on the
park brake.
WARNING
Falling Load Hazard!
Avoid severe injury or equipment damage. When
operating in Free Fall, the load will lower uncontrolled if
the drum working brake is not applied with the brake
pedal when the drum handle is released to OFF.
Be ready to apply the drum brake to control the lowering
speed and stop the load immediately when necessary.
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