Manitowoc 2250 Service Maintenance Manual

Reference Only
TROUBLESHOOTING 2250 SERVICE/MAINTENANCE MANUAL
10-46
Published 07-19-16, Control # 249-01
Test 13—Adjusting the Control Handle
Potentiometer
An unusual reaction to a control handle movement may
indicate a misalignment of the handle potentiometer (6).
Adjusting a single axis or double axis control handle requires
aligning the handle and potentiometer in the neutral position.
Neutral is the position where 5 volts DC is present.
To check a single axis controller, perform the following
procedure.
1. Make sure the engine is off and the power is on, with all
brakes and locks engaged.
2. Make a jumper connection (2) between the normally
open terminal on the neutral (snap) switch (1) and
center terminal C (5) on the handle terminal block.
3. Connect the positive lead of a digital multimeter to
terminal C.
4. Connect the negative lead to a grounded crane
component or to ground terminal R (3).
5. Loosen the slotted setscrew (4) and allow the handle to
return to the neutral position.
6. Retighten the slotted setscrew and move the handle
until a reading of 5 volts DC is obtained.
7. Holding the handle in the 5-volt position, loosen the
slotted setscrew.
8. Allow the handle to return to the neutral position.
9. Retighten the slotted setscrew.
The double axis control handle adjustment is the same,
except the two socket setscrews (7) on the gear collar are
loosened.
P1525
P1526
Double Axis
Controller
Single Axis
Controller
1
2
3
4
56
3
5
7
FIGURE 10-14
Item Description
1 Neutral (snap) Switch
2 Jumper Connection (N/O)
3 Ground Terminal R
4 Slotted Setscrew
5 Center Terminal C
6 Potentiometer
7 Socket Setscrew (qty 2)

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English