Table of Contents
Advertisement
Blade Orientation
Axle
30° Off Horizontal (Maximum)
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, UL864, AMCA 503-03 and local codes.
• Actuator manufacturer recommendations.
Damper Troubleshooting
The following is a possible cause and correction list for common concerns with dampers.
Symptom
Frame is 'racked' causing blades to
bind on jamb seals
Actuator linkage loose
Damper does not
fully open and/or
Defective motor
close
Screws in damper linkage
Contaminants on damper
RRL or TOR sensor
Heat
tripped
Damper does not
No power supplied to the actuator
operate
Our Commitment
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
8
481319 • DFDR FDR FSDR, Rev. 6, January 2022
Axle
30°
30° Off Horizontal (Maximum)
Possible Cause
30°
Axle
Corrective Action
Adjust frame such that it is square and plumb
Close damper, disconnect power, adjust and
tighten linkage
Replace
Damper installed too far into wall. Move out to
line as designated on damper label
Clean with a non-oil based solvent (see Damper
Maintenance)
Push reset button located on backside of RRL or
TOR
Add power supply
Copyright 2022 © Greenheck Fan Corporation
Normal
Advertisement
Table of Contents
