Greenheck HB Series (469620) - Manual (Page 3)

counterbalance adjustment instructions cont...
5. Open damper and recheck full open operation.
Readjust per step 3 if necessary. Recheck full closed
position (step 4) as any modification at one position
has a slight impact on the other.
6. Tighten all counterweight and arm fasteners securely.
component
applicable
Model
galvanized
Part number
Stainless
Part number
Axle Adapter, 3/8” to 3/4”
square OD HB-110, HB-120 370120 416343
3/4” Crankarm All 652982 687738
3/8”-16x2 Crankarm Bolt All 415882 415924
3/8”-16 Hex Nut for
Crankarm All 415457 415799
Short Counterweight Arm
(81/2 in. ) All 657344 689404
Long Counterweight Arm
(121/2 in. ) All 657343 683951
3/8”-16 set screw for
short/long arm All 415050 415763
3/8” -16 Weldnut/Hex nut
for short/long arm All 415127 415799
Counterweight plate,
21/2” x 31/2” All 653143 687636
Counterweight plate,
31/2” x 31/2” All 653142 687635
1/4”-20 Serrated Flange Nut All 415455 415575
1/4”-20 x 3/4” Bolt All 415490 415573
1/4”-20 x 11/4” bolt/
11/2” bolt All 415973 416103
Standard components
7. Test damper closure by opening damper blades and
releasing from 1/4, 1/2, 3/4 and full open position.
Damper should close from all positions without
assistance.
469620• HB Series Rev. 2, October 2012 Copyright 2012 © 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 are located on greenheck.com within the product area tabs and in
the Library under Warranties.
®
Phone: (715) 359-6171 • Fax: (715) 355-2399 • E-mail: [email protected] • Website: www.greenheck.com
Our Commitment