Installation Manual

Troubleshooting 8-95
8.4 Troubleshooting Conveyor
If the Conveyor is not operating correctly, refer to Table 8-28 for a summary of the symptoms, probable
causes, and fault isolation processes.
Table 8-28 Conveyor Troubleshooting Summary
Symptom Probable Cause Fault Isolation Procedure Subsection
Board Sensors Board Sensor Fault Isolation 8.4.2
Workpiece fails to stop at
station
Pneumatic System Pneumatics Fault Isolation 8.4.1
Workpiece stops at station
or Lift Tables fail to raise
Pneumatic System
Pneumatics Fault Isolation 8.4.1
Conveyor
Controller
SMEMA Fault Isolation 8.4.4
Workpiece not transferring
between Upstream or
Downstream Loader
Belt Motors Conveyor Motors Fault Isolation 8.4.5
Workpiece fails to transfer
between stations
Belt Motors,
Conveyor
Controller
Conveyor Motors Fault Isolation 8.4.5
Heaters not maintaining
Set-point
Heaters, Conveyor
Controller
Heater Fault Isolation 8.4.3
Purge Cup not activating
Pneumatic System
Pneumatics Fault Isolation 8.4.1
Problems resulting from environmental and applications abnormalities, spills, obstructions, and
workpiece irregularities that are not system related should be eliminated prior to undertaking more
advanced troubleshooting.
TIP To quickly identify problems, look for obvious signs such as burnt, discolored, missing,
damaged, or loose parts, obstructions, and foreign objects. Obvious uncharacteristic heat,
noise, odor, vibration, or movement can also be used to isolate problems quickly. If a
problem reoccurs frequently, there may be other root causes to the problem.