Greenheck IAQ-42 (467954) - Manual (Page 8)

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Copyright © 2010 Greenheck Fan Corporation
467954 IAQ-42 IOM Rev. 7 Feb 2010
WARRANTY
Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one
year from the purchase date. Any units or parts which prove to be defective during the warranty period will be
repaired or replaced at our option. Greenheck shall not be liable for damages resulting from misapplication or
misuse of its products. Greenheck will not be responsible for any installation or removal costs. Greenheck will
not be responsible for any service work or backcharges without prior written authorization.
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.
The damper responds to changes
in position or airflow command and
the controller LED flashes at the
proper 1 time per second, but the
damper moves back and forth even
after the same control signal has
been sent to the damper for several
minutes.
The electrical impedance of the
controller sending the command
signal may be more than 2,000
ohms.
It is normal for the damper to move
back and forth after a change in
command signal or a change in
system conditions. However, after
a few minutes the damper should
settle at a given position. If it
doesn’t, check the impedance of
the controller. It should be less
than 2,000 ohms.
Trouble Shooting Guide cont....