Manitowoc 2250 Service And Maintenance Manual

Reference Only
Manitowoc Published 11-06-15, Control # 040-13 10-21
2250 SERVICE/MAINTENANCE MANUAL TROUBLESHOOTING
10
PROBLEM 19
No swing operation, engine does not load.
POSSIBLE CAUSES
No voltage through control handle to controller; No voltage out of controller to pump EDC;
Wiring or switch is bad; Damaged pump or motor; Swing holding brake switch actuated.
CHECKS
Diagnostic display D2 screen (bank 6) changes by 16 when enabling swing holding brake
switch on control handle.
Yes No
Diagnostic display SWING screen (bank 1) approaches 100%
handle control when handle is extended in either non-swinging
direction.
Check swing holding brake switch and
wiring to PC. (See Te st
13.)
Ok
No Voltage
Voltage
Not Ok
Yes No
Ok
Not Ok
Yes
No
Yes No
Diagnostic display SWING screen (bank 2)
approaches 100% pump control when handle is
extended in either non-swinging direction.
Repair or replace
handle or wiring.
Consult dealer/factory.
Repair or replace swing holding brake
switch and/or wiring to PC.
Check wiring connector at pump EDC.
Consult dealer/factory.
Connect or repair connector.
Manually stroke swing pump. (See Te s t
11.) Does
platform rotate?
Isolate pump. (See Test
11.) Manually
stroke pump. Is system pressurized?
Use test plug adapter.
(See Tes t
5.) Is voltage
present at pump EDC?
Replace pump EDC.
Repair or replace motor.
Repair or replace wiring to
PC or consult dealer/factory.
Repair or replace pump.
Yes
No

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English