Periodic Louver & Damper Inspection & Maintenance

All adjustable louvers and automatic dampers should be checked and serviced on a regular schedule. Inspection intervals depend on system usage and atmospheric conditions within the system.

Basic Inspection

• All louvers and dampers should be checked for freedom of movement. Shafts, bearings, pivot points, etc. should be cleaned and lubricated with a light spray oil. Any and all excess should be removed.
  
• Blades should be checked in the closed position to insure tight closure. Adjustments should be made at linkage to correct any misalignment.
  
• Motors (electric or pneumatic) should be visually checked through their complete cycle for defects, binding or misalignment. Operator anchorage and fittings should also be checked.
  
• Blades should be checked for freedom of movement. Blades should be disconnected from their operators and manually checked. (Blades should move freely with no binding or twisting.)
  
• Pins, straps and bushings should be checked for wear, corrosion or rust. Replace or paint as required.
  
• Check louver or damper blade edge and Jamb seals (where applicable)
  
• Check all linkage, connecting bars and operator connections for proper alignment and fit.
  
• Check overall installation to insure that louver or damper was installed in a perfectly plumb and square position and proper clearance was allowed for blade, linkage and operator movement.
  
  Note: Dampers with non-metallic or carbon sleeve bearings do not require lubrication.

• Damper Maintenance

• Louver Maintenance