Greenheck Plenum Fan APH-49

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 (1/64-inch per each inch of belt span)

Disconnect the electrical supply

Check tightness of wheel, housing, bolts, and set screws

Remove any dirt accumulation on the wheel or in the housing

Check isolation bases for freedom of movement and bolts for tightness

Inspect springs for breaks and fatigue

Confirm that building supply voltage matches the voltage for which the unit is wired.

Disconnect and lock-out all power switches to fan.

Check all piping and wiring penetrations made by contractors for water tightness.

Check all fasteners, set screws and locking collars on the fan, bearings, drive, motor base and accessories for tightness.

Rotate the fan wheel by hand and assure no parts are rubbing. Remove any dirt or debris that may have accumulated during installation.

Check for bearing alignment and lubrication.

Check the V-belt drive for proper alignment and tension.

Check all guarding (if supplied) for being securely attached and not interfering with rotating parts.

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

Gather necessary tools and materials

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

Is the bearing visible to observe purged grease?