SPX Corporation Centrifugal Fan PBS-9

Ensure all safety guards are properly attached and fully functional

Is the power to the blower turned off and locked-out if any guards are defective?

Inspect accessories for proper function within intended limits and design specifications

Refer to manufacturer's maintenance manuals for correct maintenance procedures

Have all defective guards been repaired or replaced and inspected by authorized personnel?

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 for wear or structural damage

Clean blower wheel and airstream components if necessary

Select the method for balancing the blower wheel

Ensure grinding does not affect structural integrity (if applicable)

Ensure balance weights are properly attached (if applicable)

Ensure balancing clips are properly attached (if applicable)

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

Inspect and replace worn or damaged components

Remove belt guard and open shaft access holes

Remove protective coating from blower and motor shafts

Adjust motor on slide base for belt tension adjustment

Loosen motor feet nuts on slide base

Ensure all routine maintenance is completed before taking vibration readings.

Record the current vibration readings.

Are the current vibration readings within the acceptable range?

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

If differences are present, describe the potential causes.

Identify possible causes of vibration problems