Great Plains Raven 440 User Manual
Page 54
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Chapter 7
50
SCS 440 Serial Interface Installation & Service Manual
Motorized control valve rotates more than
1/4 turn.
Replace the motorized control valve.
There is water inside the cover of the
motorized control valve.
1.
Replace the isolation flange assembly and coupler shaft.
2.
Replace the entire motorized control valve if the PC board or
motor is corroded and will not run.
Boom solenoids will not function.
1.
Check the cable for wires with breaks or shorts.
2.
Verify that the cable connections are clean.
3.
Verify that the boom switch and Master switch function
properly.
4.
Replace the boom valves.
Issue
Corrective Action
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