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C.F.M. R EQUIREMENTS
FORTOOLS
Machine
Minimum
C.F._,_.Required
Minimum
Duct Diameter
Band Saw (12 to 16qnch)
350 C,F,M,
4qnch
BeWDbc Sander
450 C,F,M,
5qnch
DrHUPress
350 - 400 C,RM,
4qnch
Drum Sander (12 to 24qnch)
550 - 700 C,RM,
5qnch
Fbor Sweep
350 - 400 C,RM,
4 to 5qnch
Jointer (up to 8qnch)
350 - 400 C,RM,
4 to 5qnch
Jointer (over 8qnch)
450 - 550 C,RM,
5qnch
RadiaU Arm Saw
450 - 600 C,RM,
5qnch
Miter Saw
450 - 600 C,RM,
5qnch
Router TaMe
200 C,F,M,
3qnch
Scroll Saw
200 C,F,M,
3qnch
Spindb Sander
400 C,F,M,
4qnch
TaMe Saw (lOqnch)
350 C,F,M,
4qnch
Thickness Haner (10 to 15qnch)
400 C,F,M,
4qnch
Thickness Planer (16 to 20qnch)
600 - 800 C,RM,
5 to 6qnch
STATIC PRESSURE
FIEQUJF{EMENTS
FOR A DUST COLLECTION
SYSTEM
Using STEPS 1 thru 4 and the "Static Pressure
Requirement
Chart" you can determine the static pressure required
for your Dust Collector,
Step #1:
Multiply the number of feet of Hose/Pipe times the appropriate inches rating,
Exampie; 40 feet of 4-inch diameter ribbed tubing x ,11 = 4.4 Total
Step #2:
Multiply the fittings times the ratings and add them together,
Examp/e:Tw, o 90-degree Elbows (using 4qnch diameter Hose) = ,84 PLUS two 90-degree T-fittings = ,98
TotaJ = 1.82
Step #3:
Step #4:
Add 2.5 for the Machine Hook-up and "Dirty Bag" factors (1,5 for Hook-ups + 1,0 for Dirty Bag),
Total the above three calculations, This total should not exceed the maximum static
pressure for your Dust Collector,
Exaf_pie/4,4
(Total Step #1) x 1,82 (Total Step #2) + 2,5 (Total Step #3) = 8.72
For this example a Dust Collector
with a Static Pressure rating of over 8.72 or higher is required.
See Product Specifications
on page 2 for your dust collector
maximum
static pressure.
NOTE: To determine if you have met the Static Pressure Requirement when using a Dust Collection System, identify
the branch of the system with the highest static pressure requirement first, If you run your Dust Collection System with
more than one blast gate open, add the static pressure from all branches that are open to determine the total static
pressure requirements,
Static
Pressure
Requirement
Chart
Size of Hose
Hose/Pipe
Ribbed Tubing
90-degree
90-degree
45-degree
Machine
"Dirty Bag"
Rigid Pipe
(per foot)
Elbow
Elbow
Tofitting
Hook-Up
Adjustment
(per foot}
3
.10
.15
.50
.60
.25
1.50
1.0
4
.07
.11
.42
.49
.21
1.50
1.0
5
.055
.08
.49
.55
.25
1.50
1.0
16
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