Troubleshooting Flow Charts
30
PROBLEM: Length reading incorrect. Crane is not in “out of load chart” condition.
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Length Reading Problem
START
Check mechanical adjustment of length potentiometer in cable reel. When main boom is fully retracted,
adjust length potentiometer counter-clockwise until it stops.
Refer to length/angle adjustments procedure.
Correct?
Replace length potentiometer assembly. Remove slip ring body from shaft and
remove gear wheel from potentiometer axle. Unscrew mounting plate and
remove potentiometer assembly from mounting plate. Remove assembly wires
No
form terminal block. Connect new assembly to terminal block. Reinstall
mounting plate, gear wheel and slip rings. With boom fully retracted, reset
potentiometer by turning counter-clockwise until it stops.
Refer to Cable Reel Parts List.
Yes
Check out clutch in big gear wheel of length transducer. Extend and retract
boom to ensure that clutch is not sipping on potentiometer axle.
Correct?
No
Yes
Replace the gear wheel, clean potentiometer
axle. Reset length potentiometer.
Refer to length/angle adjustments procedure.
Check power supply to length transducer on connection board,
terminal X1:8 (ground) and X1:11 (-5V)
Refer to system wiring diagram.
Correct?
No
Yes
Replace connection board and reset pressure
channel. Refer to system wiring diagram and main
board replacement procedure.
Summary of Contents for DS 150
Page 2: ......
Page 3: ......
Page 5: ...Service Manual DS150...
Page 7: ...Service Manual DS150...
Page 10: ...Mechanical Description Of The System 3 Basic System Component Layout...
Page 13: ...Drawings 6 4 DRAWINGS SYSTEM Electrical Diagram...
Page 14: ...Drawings 7 Central Unit 024 150 060 002 Spare Parts List...
Page 20: ...Drawings 13 4 5 Cable Reel 068 208 060 013 LWG208 Spare Parts List...
Page 24: ...Procedures 17 Length Angle Adjustments...
Page 26: ...Theory 19 6 THEORY Anti Two Block Shutoff Circuit Length Measuring Channel...
Page 27: ...Theory 20 Piston Side Pressure Measuring Channel Rod Side Pressure Measuring Channel...
Page 28: ...Theory 21 Main Boom Angle Measuring Channel Second Angle Measuring Channel...
Page 53: ...Error Codes 46 America Inc service department...