481318 • FSD DFD FSD3-xxxV, Rev. 9, January 2022 Copyright 2022 © Greenheck Fan Corporation12
As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications
without notice.
Product warranties can be found online at Greenheck.com, either on the specific product page or in the literature
section of the website at Greenheck.com/Resources/Library/Literature.
®
Phone: 715.359.6171 • Fax: 715.355.2399 • Parts: 800.355.5354 • E-mail: gfcinfo@greenheck.com • Website: www.greenheck.com
Our Commitment
Damper Maintenance
Dampers do not typically require maintenance as long as they are kept dry and clean. If cleaning is necessary, use
mild detergents or solvents. If lubrication is desired for components such as axle bearings, jackshaft bearings and
jamb seals, do not use oil-based lubricants or any other lubricants that attract contaminants such as dust.
Dampers and their actuator(s) must be maintained, cycled, and tested a minimum in accordance with:
• The latest editions of NFPA 80, 90A, 92, 101, 105, UL 864, AMCA 503-03 and local codes.
• Actuator manufacturer recommendations.
Damper Troubleshooting
The following is a possible cause and correction list for common concerns with the dampers.
Symptom Possible Cause Corrective Action
Damper does not fully
open and/or close
Frame is 'racked' causing blades to bind
on jamb seals
Adjust frame such that it is square and plumb
Actuator linkage loose Close damper, disconnect power, adjust and tighten
linkage
Defective motor Replace
Screws in damper linkage Damper installed too far into wall. Move out to line as
designated on damper label
Contaminants on damper Clean with a non-oil based solvent (see Damper
Maintenance)
RRL or TOR sensor
tripped
Heat Push reset button located on backside of RRL or TOR
Damper does not
operate
No power supplied to the actuator Add power supply
Damper Commissioning and Periodic Testing
The International Fire Code (IFC) requires fire dampers to be maintained in accordance with NFPA standard 80 and
smoke dampers to be maintained in accordance with NFPA standard 105. NFPA 80 and 105 define the frequency
and method for periodically testing life safety dampers.
NFPA 80 & 105 do not require heat to be applied to a damper’s fusible link or thermostat during periodic testing.
Electric or pneumatic actuated dampers are required to be tested by temporarily removing electrical or pneumatic
power from the actuator to ensure the damper fully closes and then fully opens once power is restored. Mechanical
and gravity operated dampers utilizing a fusible link are required to be tested by removing the fusible link and
allowing the damper to fully close and then manually reopening the damper. Re-install the fusible link.
Greenheck’s life safety dampers shall not be tested by applying heat with uncontrollable heat sources (i.e. heat guns,
torches, etc.) as this can permanently damage the thermostat or other parts of the damper.
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