Greenheck Plenum Fan APH-30

Check for wear, tension, alignment, and dirt accumulation on V-belt drives

Are the sheaves free from grooves or wear?

Are all belts being replaced on multiple groove drives?

Loosen belt tension before removing belts

Ensure slack in each belt is on the same side of the drive after replacement

Measure belt deflection halfway between sheave centers (in inches)

Run each fan to operating temperature

Bump each fan if not run to operating temperature

Check fan RPM when adjusting operating frequency

Consult manufacturer before changing fan operating conditions

Ensure the fan is turned off and locked out before starting lubrication.

Is the shaft rotating during lubrication?

Add lubricant until clean grease is seen purging from the bearing.

Enter the number of grease shots used for lubrication.

Disconnect the electrical supply to the fan

Remove any dirt accumulation on the wheel or in the housing

Inspect fan impeller and housing for fatigue, corrosion, or wear