Manitowoc 2250 User Manual

Reference Only
Manitowoc Published 06-24-16, Control # 241-01 3-35
2250 OPERATOR MANUAL OPERATING CONTROLS AND PROCEDURES
3
Boom/Luffing Hoist Operation
1. Select and confirm the desired crane mode—Standard
to operate the boom hoist or Luffing Jib to operate the
luffing jib.
2. To operate the desired hoist, turn off the drum park to
release the drum brake and disengage the drum pawl (if
equipped).
3. Turn on the drum park to apply the drum brake and
engage the drum pawl (if equipped) for each load drum.
NOTE: The boom or luffing jib will not lower until the
corresponding pawl is disengaged. It may be
necessary to raise the boom or luffing jib slightly
before the pawl will disengage.
The boom or luffing jib will stop if the corresponding
pawl is engaged while lowering.
For the MAX-ER 2000, drum 2 (boom hoist) cannot
be operated until drum 3 (load hoist) is parked, and
vice versa.
4. Increase engine speed to the desired rpm with the hand
throttle. Press the foot throttle to momentarily increase
engine speed when power is required.
5. Move the handle to the rear to raise the boom or luffing
jib (Figure 3-16
). Move the handle to the front to lower
the boom or luffing jib (Figure 3-17
).
6. As the boom or luffing jib nears the desired angle, slowly
move the control handle toward OFF to decrease speed.
Then move the handle to OFF to stop the boom or luffing
jib and hold it in position (brake will spring apply).
NOTE: Besides being equipped with a Boom Up limit, a
physical boom stop is provided. The physical boom
stop cushions boom raising between
approximately 80° and the Boom Up limit. The
boom stop also provides a physical stop at 90°.
WARNING
Falling Boom/Jib Hazard!
Avoid severe injury or equipment damage. Failing to
comply with the instructions can result in tipping or
structural failure of the boom/luffing jib.If equipped with a
luffing jib, raise and lower the boom and luffing jib
according to the instructions in the Luffing Jib Attachment
Manual.
CAUTION
Rigging Damage!
Avoid damage to the boom or luffing jib rigging. Verify that
the boom and luffing hoist wire rope is reeved through all
sheaves and spooled properly onto the hoist drums
before raising the boom or luffing jib from the ground.
See the appropriate rigging drawings for wire rope and
reeving specifications. See Wire Rope Installation in
Section 4 for instructions on attaching wire rope to drums.
WARNING
Two-Blocking Hazard!
Avoid severe injury or equipment damage. Wire rope or
other parts could break, allowing the load to fall. Pay out
the load lines while lowering the boom or luffing jib. The
load may contact the boom or jib point sheaves if this step
is not taken.
FIGURE 3-16
Boom Hoist Handle
on Left Console
OFF
A420
RAISING
A489
BOOM
FIGURE 3-17
Boom Hoist Handle
on Left Console
OFF
A420
LOWERING
A489
BOOM

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English