Manitowoc 2250 Service Maintenance Manual

Reference Only
HOISTS 2250 SERVICE/MAINTENANCE MANUAL
5-6
Published 07-19-16, Control # 249-01
Storing the Electrical Cords
See Figure 5-4 for the following.
The electrical cords for the boom, fixed jib, and luffing jib are
long enough to accommodate the maximum length of each
attachment.
Store the excess cord for the boom and luffing jib on the
cable reel (1) mounted on the boom butt (3) or luffing jib butt.
Disengage the cable reel locking pin to allow the reel to be
wound. Engage the locking pin to lock the reel in position.
The power supply cord to the reel must be disconnected
before the reel can be wound.
Store the excess electrical cord for the #132 fixed jib, #140
fixed jib, or extended upper boom point by winding the cable
around the brackets on the jib butt.
Disconnecting the Block-Up Limit Control
See Figure 5-4 for the following.
A shorting plug (6) is provided on the left front corner of the
adapter frame (7) so the block-up limit system can be
disconnected for the following reasons:
• Crane setup and rigging
• Maintenance
• Operations not requiring the use of a block-up limit
control (clamshell and dragline)
To disconnect the block-up limit system, proceed as follows.
1. Disconnect electrical cable C1 (4) from the cable
reel (1).
2. Remove the closure cap from the shorting plug.
3. Connect electrical cable C2 (5) to the shorting plug.
4. Reverse the steps to reconnect the block-up limit
control.
Removing the Jib or Boom Point
For identification of junction boxes, electrical cords, and
shorting plugs, see the Block-Up Limit Control Assembly
drawing.
The junction boxes on the boom and jib points are equipped
with shorting plugs.
If the fixed jib point, upper boom point, or luffing jib point has
a block-up limit switch, the electrical cord from the limit
switch must be connected to the proper shorting plug when
the corresponding attachment is removed. Failing to perform
this step prevents the load drum from hoisting and the boom
from lowering. Also, the operating limit alert comes on.
FIGURE 5-4
A1050
The cable reel is shown on a boom butt.
Mounting on a luffing jib butt is similar.
For a fixed jib and extended upper boom
point, the extra cable is stored on a bracket
on the outside of the jib butt.
Item Description
1 Cable Reel
2 Junction Box on Boom Point
3 Boom Butt
4 Electrical Cable C1
5 Electrical Cable C2
6 Shorting Plug
7 Left Front Corner of Adapter Frame
8 Top Junction Box in Adapter Frame
1
2
3
4
5
6
7
8

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English