Aggregate Feed - TM-5-3895-374-24-2

TM-5-3895-374-24-2 M081 Asphalt Mixing Plant Manual
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TM 5-3895-374-24-2 Problem Cause Solution/Reference Master/Ratio controller failed Check voltage at terminal + and - Should be 24 Vdc If not check fuse in computer panel Output pins #1 and #12 must be 10.0 Vdc If not replace master ratio module See electrical drawing AA00318 Speed potentiometer failed Check voltages at potentiometers by reference to drawings Master set at maximum Terminals 3, 5, 7 and 9 should be 10. Vdc Terminals 4, 6, 8 and 10 should vary with position of potentiometers See electrical drawings AA00318 and AA00319 Variable speed drive control not stable Loose connection in control wiring Manual potentiometer failed Variable speed drive failure page 4 - 21

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