Greenheck ICD Dampers (468333) - Manual (Page 4)

4
Damper trouble shooting
The following is a cause and correction list for common concerns with the dampers.
Damper Maintenance
Greenheck's dampers are designed to be trouble free and hassle free under normal operation. Dampers are
to be installed square and straight so as to prevent binding during operation. The following annual damper
maintenance suggestions will help to insure proper damper operation and increase the life expectancy of the
damper.
foreign Matter Over the course of time, dirt and grime may collect on damper surfaces. The
damper surfaces should be cleaned to prevent hindrance to airflow.
Moving Parts Make sure that parts such as linkage, bearings, blades, etc. that are intended
to move freely, can do so. Lubricating these components can prevent possible
rusting and unnecessary friction increase. Use only a moli-spray oil or similar
graphite based oil as regular lubricating oil will attract dirt.
Bearings. Synthetic, oil impregnated, and ball bearings (without grease fittings)
do not require lubrication. Ball bearings with grease fittings require only minimal
grease.
Closure Remove foreign materials that may be interfering with blade closure or effective
sealing of the blades with each other or with the frame.
operation While operating the damper through its full cycle, check to see that the blades
open and close properly. If there is a problem, check for loose linkage, especially
at the actuator. Tighten the linkage where required.
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 designated line on damper label
Contaminants on damper Clean with a non-oil-based solvent (see
Damper Maintenance)
468333• ICD Rev. 3, 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 Warranties.
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Phone: (715) 359-6171 • Fax: (715) 355-2399 • E-mail: [email protected] • Website: www.greenheck.com
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