Labconco Intelli-Sense Multi-Speed Blowers 7183413 - Manuel (Page 44)

Chapter 7: Modifying Your Blower
Product Service 1-800-522-7658 40
Original instructions
Backdraft Dampers
Designed for use in buildings under negative pressure to keep outside air from
entering the laboratory through the hood ventilation system. Damper is weighted
to stay in down/resting position when the hood is not in use, and rises from the
airflow exhausting when the blower is on. It mounts vertically on blower outlet.
The damper is made of PVC Type 1, unplasticized, schedule 40 duct.
Nominal Diameter/Inches 8 10 12
Catalog Number S304508 S304510 S304512
Shipping Wt./lbs. 15 18 20
Bird Screens
Screen attaches easily with screws to auxiliary-air blower inlet to keep birds from
nesting in blower.
Nominal Diameter/Inches 10 12
Catalog Number S122500 S122501
Shipping Wt./lbs. 5 5