User Manual

Final Installation Steps
1. Inspect fasteners and setscrews, particularly fan mounting and bearing fasteners, and tighten according to the
recommended torque shown in the table Recommended Torque for Setscrews/Bolts.
2. Inspect for correct voltage with voltmeter.
3. Ensure all accessories are installed.
Recommended Torque for Setscrews/Bolts (IN/LB)
Operation
Pre-Start Checks
1. Lock out all the primary and secondary power sources.
2. Ensure fasteners and setscrews, particularly those used for mounting the fan, are tightened.
3. Inspect belt tension and pulley alignment.
4. Inspect motor wiring.
5. Ensure belt touches only the pulleys.
6. Ensure fan and any duct work are clean and free of debris.
7. Inspect wheel-to-inlet clearanc e. T he correct whe el-to-inlet clearance is critical to proper fan performance.
8. Restore power to the fan.
Start Up
Turn the fan on. In variable speed units, set the fan to its lowest speed and inspect for the following:
1. Direction of rotation.
2. Excessive vibration.
3. Unusual noise.
4. Bearing noise.
5. Improper belt alignment or tension (listen for squealing).
6. Improper motor amperage or voltage.
If a problem is discovered, immediately shut the fan off. Lock out all electrical power and check for the cause of the
trouble. See Troubleshooting.
Inspection
Inspection of the fan should be conducte d in the first 30 mi nut es, 8 hour and 24 hour intervals of satisfactor y operation. Durin g
the inspections, stop the fan and ins pect as per the Conditions Chart.
30 Minute Interval
Inspect bolts, setscrews, and motor mounting bolts. Adjust and tighten as necessary.
8 Hour Interval
Inspect belt alignment and tension. Adjust a nd tighten as necessary.
24 Hour Interval
Inspect belt tension, bolts, setscrews, and motor mounting bolts. Adjust and tighten as necessary.
6
Maintenance