Greenheck Fan OSSFD-XXX Series Symptom, Possible Cause, Corrective Action, Damper Maintenance

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, 92A, 92B, 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 the dampers.

Symptom	Possible Cause	Corrective Action
	Frame is 'racked' causing blades	Adjust frame such that it is square and plumb
	to bind on jamb seals
	Actuator linkage loose	Close damper, disconnect power, adjust and
Damper does not		tighten linkage
fully open and/or	Defective motor	Replace
close
	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	Heat	Push reset button located on backside of
tripped		RRL or TOR
Damper does not	No power supplied to the actuator	Add power supply
operate

Copyright © 2008 Greenheck Fan Corporation

461337 OFSD ODFD Rev 9 January 2008

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