Manitowoc 2250 - Swing Operation

Reference Only
OPERATING CONTROLS AND PROCEDURES 2250 OPERATOR MANUAL
3-36
Published 06-24-16, Control # 241-01
7. Once the boom or luffing jib is positioned at the desired
angle, turn on the drum park and engage the pawl switch
(if equipped).
Swing Operation
1. Turn off the swing brake.
2. 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.
3. Move the swing handle to the left to swing left
(Figure 3-18
) or to the right to swing right (Figure 3-19).
4. Start the swing motion with a smooth acceleration.
Continue the handle motion to swing at the desired
speed.
5. Stop swinging by releasing the swing handle to OFF.
The swing speed decreases to off, and the rotating bed
coasts to a stop. If a faster stop is desired, move the
handle slightly past OFF to the opposite swing direction.
WARNING
Falling Boom/Jib Hazard!
Avoid severe injury or equipment damage. The boom or
luffing jib could be pulled over backward. Operating with
the boom or luffing jib above the Boom Up limit is neither
intended nor approved.
WARNING
Tipping Hazard!
Avoid severe injury or equipment damage. Prevent the
crane from tipping. Adhere to the swing limitations given in
the capacity charts.
DANGER
Moving Crane Hazard!
Avoid death or serious injury. Counterweights can strike
personnel in the area of the swing path. Warn personnel
to stay clear of the swing path. Sound the horn prior to
swinging.
CAUTION
Avoid Swing Lock Damage!
Swing slightly in either direction so the swing lock
completely disengages the ring gear before applying full
swing power.
Do not engage the swing lock while swinging. Bring the
rotating bed to a complete stop first.
CAUTION
Avoid Boom and Swing Drive Damage!
Do not apply the swing holding brake or turn on the brake
while swinging. The brake brings the rotating bed to an
abrupt stop. This can damage the boom from side loading
or damage the swing drive from shock loading. Bring the
rotating bed to a smooth stop with the handle and then
apply the swing holding brake or turn on the swing brake.
FIGURE 3-18
Swing Control Handle on Left Console
OFF
A420
A489
SWING LEFT
FIGURE 3-19
Swing Control Handle on Left Console
OFF
A420
A489
SWING RIGHT