Service manual

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Troubleshooting
41
F8343001
15. No Rotation without Drive Fault (80 Pound Models Only)
CHM487S
No Rotation without Drive Fault (*C80 only)
Is there an active fault on the
inverter drive? Refer to
Inverter Drive Supplement.
Yes
Refer to “No Rotation with Drive Fault” flowchart.
No
Is the belt off the
pulley or is the belt
broken?
Yes
Replace belt.
No
Is the motor turning?
Yes
Check that pulleys are engaged on shafts.
No
Is the correct
voltage present
at the drive?
No
Trace wires back to source to find where voltage is lost.
Yes
Is the display
active on the
drive?
No
Re-check supply voltage at drive - possible dead drive.
NOTE: Contact Alliance Technical Support for further
assistance.
Check H13 on AP1 Output Board and J16 plug. Verify
direction/speed output LEDs are lit and check control inputs.
If problem not solved, refer to Inverter Drive Supplement.
Yes
Check for 24VAC at TR2 (control transformer) - J9-1 to J9-4.
No
Yes
Is there 24VAC
between H13-8 to
H13-1?
A
B
CHM487S