TM 10--3510--221--24
0025 00--3
DRUM NO ROTATION -- Continued
0025 00
20. Check for >200 VAC across CB3 or CB4 output terminals (T1 and T2), (T1 and T3), and (T2 and T3).
Is >200 VAC present?
YES Go to step 21.
NO Replace CB3 or CB4 (WP 0218 00).
21. Remove cover from drum inverter.
22. Check for >200 VAC across drum inverter input terminals (L1 and L2), (L1 and L3), and (L2 and L3).
Is >200 VAC present?
YES Go to step 23.
NO Check wire connections between CB3 or CB4 and drum inverter. Repair as necessary.
23. Use maintenance menu to rotate drum at ”TUMBLE CW”, ”TUMBLE CCW” , ”DISTRB CCW”, ”LO EXT
CCW”, and ”HI EXT CCW while checking for >200 VAC across drum inverter input terminals (L1 and L2),
(L1 and L3), and (L2 and L3).
Is >200 VAC present?
YES Go to step 24.
NO Replace drum inverter (WP 0245 00).
24. Use maintenance menu to rotate drum at ”TUMBLE CW”, ”TUMBLE CCW” , ”DISTRB CCW”, ”LO EXT
CCW”, and ”HI EXT CCW while checking for >200 VAC across drum inverter output terminals (U and V), (U
and W), and (V and W).
Is >200 VAC present at all speeds and directions?
YES Go to step 25.
NO Go to step 26.
25. Check wire connections between drum inverter and drum drive motor.
Are wire connections OK?
YES Replace drive motor (WP 0257 00)
NO Repair as necessary.
26. Use maintenance menu to rotate drum at ”TUMBLE CW”, ”TUMBLE CCW” , ”DISTRB CCW”, ”LO EXT
CCW”, and ”HI EXT CCW while verifying LEDs on SSR PCB4 turn on as follows:
DRUM SPEED
DIRECTION
SSRs (DRUM A) (DRUM B)
TUMBLE
CW
16, 18, 21
8, 10, 13
TUMBLE
CCW
17, 18, 21
9, 10, 13
DISTRBT
CCW
17, 19, 22
9, 11, 14
LO EXT
CCW
17, 20, 21
9, 12, 13
HI EXT
CCW
17--19, 21, 22
9--11, 13, 14
Do LEDs come on as stated above?
YES Go to step 27.
NO Go to TYPICAL DC OUTPUT SIGNAL FAULT (WP 0106 00) to determine why suspect LED
is not on.
27. Use maintenance menu stop drum rotation.
