Greenheck Marine Dampers - USCG Approved (464603) - Manual (Page 4)

Damper Troubleshooting
The following is a possible cause and correction list for common concerns with the dampers.
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 in accordance with:
• The latest editions of NFPA 80, 90A, 92A, UL864, and local codes.
• Actuator manufacturer recommendations.
Symptom Possible Cause Corrective Action
Damper does not fully open
and/or fully 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 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 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 Supply power
464603• Marine IMO Rev. 4, October 2012 Copyright 2012 © Greenheck Fan Corporation
As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without notice.
Specific Greenheck product warranties are located on greenheck.com within the product area tabs and in the Library under War-
ranties.
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