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
Dampers and their actuator(s) must be maintained, cycled, and tested in accordance with:
•The latest editions of NFPA 80, 90A, 92A, UL864, and local codes.
•Actuator manufacturer recommendations.
Damper Trouble Shooting
The following is a possible cause and correction list for common concerns with the dampers.
Symptom | Possible Cause | Corrective Action | |
|
|
| |
| Frame is ‘racked’ causing blades to | Adjust frame such that it is square | |
| bind on jamb seals | and plumb | |
|
|
| |
| Actuator linkage loose | Close damper, disconnect power, adjust | |
Damper does not |
| and tighten linkage | |
|
| ||
Defective motor | Replace | ||
fully open and/or | |||
fully close | Screws in damper linkage | Locate screws and remove | |
|
|
| |
| Actuator linkage hitting wall or floor | Damper installed too far into wall. Move | |
|
| out to line designated on damper label. | |
|
|
| |
| Contaminants on damper | Clean with a | |
|
| (see Damper Maintenance) | |
|
|
| |
RRL or TOR sensor | Heat | Push reset button located on backside | |
tripped |
| of RRL or TOR. | |
|
|
| |
Damper does not | No power supplied to the actuator |
| |
operate |
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| |
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Copyright © 2007 Greenheck Fan Corporation
