Greenheck AMD-xx-TD Series Dampers (478799 IOM). - Manual (Page 12)

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.
478799 • AMS & AMD, Rev. 1, March 2014 Copyright 2014 © 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 can be located on greenheck.com within the product area tabs and listed in the
Library under Warranties.
®
Phone: (715) 359-6171 • Fax: (715) 355-2399 • E-mail: [email protected] • Website: www.greenheck.com
Our Commitment