SPX Corporation Centrifugal Fan HDAF-9

Ensure motor is turned off and locked out

Gather necessary tools and compatible grease

Ensure all routine maintenance is completed before taking vibration readings.

Record the current vibration readings.

Are the current vibration readings within acceptable limits?

Compare current readings with initial startup readings from Table 4. Are there any major differences?

If differences are present, describe the potential causes.

Secure blower wheel to prevent wind milling

Consultation for operating condition changes

Check all blower and foundation hardware for tightness

Tighten all set screws or taper-lock bushing bolts to specified torque values

Replace any loose set screws with knurled, cup-point set screws with a nylon locking patch

Inspect airstream components for wear or structural damage

Is there any abrasion or corrosion on the blower parts?

Is the wheel unbalanced causing excessive vibration?

Was the blower wheel cleaned properly?

Select the method for balancing the blower wheel

Turn off and lock out power to the motor before starting any work.

Ensure the area around the blower is safe and secured before starting the motor.

Inspect and replace worn or damaged components

Check blower and motor shafts for nicks or burrs and remove them if present.

Remove belt guard and open shaft access holes.

Remove protective coating from blower and motor shafts.