User Manual

-24-
Model W1666/W1685 (For Machines Mfd. Since 2/15)
SETUP
3. Directional changes should be kept to a minimum.
The more directional change fittings you use directly
increases the overall resistance to airflow.
4. Gradual directional changes are more efficient than
sudden directional changes (i.e. use the largest
corner radius possible when changing hose or pipe
direction).
5. Each individual branch line should have a blast gate
immediately after the branch to control suction from
one machine to another.
6. The simpler the system, the more efficient and less
costly it will be.
Determine Required CFMs
Since each machine produces a different amount of
sawdust, the requirements for the minimum amount of
CFM to move that sawdust is unique to the machine (for
example, a planer produces more sawdust than a table
saw). Knowing this required CFM is important to gauging
which size of duct to use.
Refer to Figure 28 for a close estimation of the airflow
each machine requires. Keep in mind that machines that
generate the most sawdust should be placed closest to
the dust collector. If the machine has multiple dust ports,
the total CFM required is the sum of all ports.
If the machine does not have a built-in dust port, use the
table in Figure 29 to determine which size of dust port to
install.
Machine
Dust Port Size
Approximate
Required CFM
2" 98
2.5" 150
3" 220
4" 395
5" 614
6" 884
7" 1203
8" 1570
9" 1990
10" 2456
Figure 28. Approximate required airflow
for machines, based on dust port size.
Machine Average Dust Port Size
Table Saw .................................. 4"
Miter/Radial-Arm Saw .................... 2"
Jointer (6" and smaller) ................. 4"
Jointer (8"-12") ............................ 5"
Thickness Planer (13" and smaller) .... 4"
Thickness Planer (14"-20") ............... 6"
Shaper ...................................... 4"
Router (mounted to table) .............. 2"
Bandsaw .................................... 4"
Lathe ........................................ 4"
Disc Sander (12" and smaller) ........... 2"
Disc Sander (13-18") ...................... 4"
Belt Sander (6" and smaller) ............ 2"
Belt Sander (7"-9") ........................ 3"
Edge Sander (6" x 80" and smaller) .... 4"
Edge Sander (6" x 80" and larger) ...... 5"
Drum Sander (24" and smaller) ..... 2 x 4"
Drum Sander (24" and larger) ....... 4 x 4"
Widebelt Sander (18" and smaller) ..... 5"
Widebelt Sander (24"-37" single head)
..................................... 2 x 6"
Widebelt Sander (24"-51" double head)
..................................... 5 x 4"
Figure 29. Dust port size and quantity per
average machine.