Greenheck HCD Installation Manual
Document Number 469618
®
HCD SERIES
Installation, Operation, and Maintenance Instructions
RECEIVING AND HANDLING
Upon receiving dampers, check for both obvious
and hidden damage. If damage is found, record all
necessary information on the bill of lading and file
a claim with the final carrier. Check to be sure that
all parts of the shipment, including accessories, are
accounted for.
Dampers must be kept dry and clean. Indoor
storage and protection from dirt, dust and the
weather is highly recommended. Do not store at
temperatures in excess of 100°F (37ºC).
Due to continuing research, Greenheck reserves the right to change specifications without notice.
This manual is the property of the owner, and is required for future maintenance. Please leave it with the
owner when the job is complete.
Improper installation, adjustment, alteration,
service or maintenance can cause property
damage, injury or death. Read the installation,
operating, and maintenance instructions
thoroughly before installing or servicing this
equipment.
SAFETY WARNING:
Storage of Dampers Prior to Installation
The basic intent of a proper storage of heavy duty/industrial control damper is to prevent physical damage, material
corrosion, and deterioration of organic material.
1) Visually inspect the damper for damage. Store indoors, protected from sunlight, moisture and flooding. Protect dampers
from debris and dirt accumulation. Keep all conduit entry plugs and actuator access covers in place.
2) Dampers may be stacked and stored horizontally if wood or equivalent spacers are placed between flanges to protect
finish. Do NOT store with axles vertical. Place dampers on pallets or supports to allow air circulation. Do NOT store with
damper directly on concrete or ground.
3) The damper drive should be stored in a clean dry area. Do not stack drives on top of one another. Add desiccant
to electrical compartment if storage area temperature drops below 38°F. Damage due to moisture is not covered by
actuator warranty.
Storage of Dampers Prior to Installation cont.....
4) Cycle damper with actuator once per year, a minimum of ten open/close cycles, to distribute grease in bearings and
actuator.
5) Consult manufacturer if storage time exceeds two years.
Installation Guidelines- Failure to follow instructions will void all warranties
The basic intent of a proper installation is to secure the heavy duty/industrial control damper into the opening in such a
manner as to prevent distortion and disruption of damper operation. The following items will aid in completing the damper
installation in a timely and effective manner.
1) Dampers are supplied standard without mounting holes.
Drill or punch as required. If mounting holes are supplied,
use appropriate gasketing between mating flanges.
Closed cell sponge rubber, solid rubber, maximum 60
durometer, or fiberglass drop warp tape is recommended.
If damper is replacing existing damper, clean mating
surfaces prior to installing new damper.
2) Damper blades remain within the frame depth.
3) Damper may be installed with flow from either direction.
Damper blade centerlines MUST be horizontal. Consult
Greenheck for modifications if damper is to be mounted
with blade centerlines vertical.
4) Isolate damper from high vibratory loadings.
5) If any NEMA electrical enclosure is supplied, use
appropriate electrical connections so as to maintain the
NEMA rating.
Do’s
1) Use damper lifting lugs as provided.
2) Install all mounting bolts before tightening. Tighten in
even and staggered pattern to evenly compress flange
gasketing.
3) Mating flange must be flat and in the same plane.
4) Verify that damper does not strike mating ductwork or
internal ductwork reinforcing when blade is in the open
position.
5) Provide expansion joints upstream/downstream for
angled ductwork so damper is not subjected to thermal/
wind load forces off the centerline of damper.
Dont’s
1) Do not lift damper with chain/strap with blade propped
open and with chain/strap through frame as this could
damage blade seal.
2) Do not use actuator, linkage, or axles as lifting point.
3) Do not use prybar to match frame holes to mating
ductwork as frame can be warped or pulled out-ofround by excessive force.
4) Do not tighten mounting bolts by starting at one point
and “walking” around the damper as uneven flange
compression can result.
Electrical Guidelines
Electrical and/or pneumatic connections to damper actuators should be made in accordance with wiring and piping
diagrams developed in compliance with applicable codes, ordinances and regulations.
SAFETY CAUTION !
Verify power requirements before wiring
actuator. Greenheck is not responsible
for any damage to, or failure of the unit
caused by incorrect field wiring.
Electrical input may be needed for
this equipment. This work should be
performed by a qualified electrician.
SAFETY DANGER !
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
Moving Parts Make sure that parts such as linkage, bearings, blades, etc. that are intended to move freely,
Bearings. Synthetic, oil impregnated, carbon sleeve, and ball bearings (without grease fittings)
should be cleaned to prevent hindrance to airflow.
can do so. Lubricating these components can prevent possible rusting and unnecessary friction
increase. Use only a molybdenum spray oil or similar graphite based oil on sleeve bearings as
regular lubricating oil will attract dirt.
do not require lubrication. Ball bearings with grease fittings should be lubricated as follows:
Maximum Duct Temperature Lubricant Minimum Frequency
250° F 121° C
600° F 316° C
NLG1 Grade 2 lithium
12-hydrostearate grease
Hi temperature synthetic,
Mobillith SHC100 or equal
twice a year
four times a year
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