Greenheck AMD Series Dampers (474014) - Manual (Page 10)

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.
Optimal Placement for AMS & AMD Damper Series
Air Handling Units . . .
2D
Fan Discharge 1
MIN
3D
Fan Discharge 2
Circular Duct: D = Duct Diameter 4 x Width x Height

Rectangular Duct: D=
474014 • AMS & AMD, Rev. 8, May 2015 Copyright 2015 © Greenheck Fan Corporation
As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications without
notice.
Specific Greenheck product warrantees can be located on greenheck.com within the product area tabs and listed in the
Library under Warrantees.
®
Phone: (715) 359-6171 • Fax: (715) 355-2399 • E-mail: [email protected] • Website: www.greenheck.com
Our Commitment