Greenheck DFD Series Installation, Operation And Maintenance Manual page 30

Item Qty Description
1 1 Manual Quadrant
2 1 Bolt
3 1 Flat washer
4 1 Hex nut
5 1 Wing nut
6 1 Axle pin
7 1 Axle clip
8 2 Tek screw
1 1 ⁄ in. Standoff bracket
1
2
9
1 2 in. Standoff bracket
Installation Instructions With Standoff Bracket
1. Install the damper in the duct. Place fasteners so that
they do not interfere with operation of the blades.
The end of the blade that has the lances will accept
the quadrant drive pin. Place that side of the damper
on the side of the duct where the quadrant is to be
located.
2. Cut a hole thru the duct over the lanced blade axle
bearing. The hole should be large enough for the axle
pin to slide through (approximately
3. Insert the bolt into the standoff bracket as shown
and secure using the hex nut.
4. Using the outer arc of the quadrant, attach the
quadrant to the standoff bolt and apply the flat
washer and wing nut. Slide the standoff assembly to
the end of the arc that is furthest from the quadrant
pointer and tighten the wing nut. Slide the axle pin
through the quadrant.
Our Commitment
As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications
without notice.
Product warranties can be found online at Greenheck.com, either on the specific product page or in the
literature section of the website at Greenheck.com/Resources/Library/Literature.
®
Phone: 715.359.6171 • Fax: 715.355.2399 • Parts : 800.355.5354 • E-mail: gfcinfo@greenheck.com • Website: www.greenheck.com
2 476321 • MBD-10, Rev. 4, September 2018
Part Number
475679
415034
416206
415455
415885
Quadrant
452899 Pointer
451890
415555
742523
742525
5. Align the quadrant pointer with the blade as shown
6. Rotate the quadrant and blade until the blades are at
⁄ in. diameter).
9
16
7. Repositioned the standoff bracket as shown, then,
8. Using the quadrant lever, cycle the damper while
9. Set the damper blade to the desired position and
and then insert the axle pin into the damper blade
lances. Pound the axle pin into the damper blade
until the axle clip is approximately 2¼ in. (57mm)
away from the duct.
the full closed position. (The quadrant pointer will be
approximately perpendicular to the centerline of the
duct).
attach the standoff bracket to the duct using two
self- drilling TEK screws.
checking for proper operation. Verify that the
blade is free floating within the frame. Resolve any
interference issues that prevent smooth operation.
tighten the wing nut.
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