Grizzly G0440 - Manual (Page 32)

-30-
Model g0443 (Mfg. since 11/09)
figure 45. additional factors affecting static
pressure.
figure 46. totaling static pressure numbers.
Main Line
6" Rigid Pipe (0.037) at 20' ................ 0.740
Branch Line
4" Rigid Pipe (0.075) at 10' ................ 0.750
4" Flex Pipe (0.28) at 5' ........................ 1.400
Elbows/Branches
6" 45˚ Y-Branch ................................ 0.329
4" 45˚ Elbow ........................................ 0.225
Additional Factors
Seasoned Filter ................................ 1.000
Total Static Pressure Loss ................ 4.444
additional factors Static Pressure
seasoned (well used)
dust Collection Filter
1"
entry loss at large
Machine hood
2"
4. total your list as shown in the example below
to come up with your overall static pressure
loss number for that line.
Note: Always account for a seasoned filter,
so you don't end up with a system that only
works right when the filter is clean.
Note: When calculating static pressure loss
to determine if multiple lines can be left open
at the same time, only include the main line
numbers once.
3. add the additional factors from the following-
table to your list.
5. Compare the total static pressure loss for that
line to the closest CFM given in figure 48 for
your dust collector on Page 31.
Example: a typical Data Sheet Performance
Curve is illustrated in figure 47. Find 4.4 on
the static pressure axis (the amount of total
static pressure loss calculated in
figure 46),
then refer to the closest value on the CFM
axis—approximately 1120 CFM.
the 1120 CFM for the static pressure loss of
the line connected to the router is well above
the 220 CFM requirement of that machine.
-6- G0440/G0441/G0443 Cyclone Dust Collectors
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G0440 MACHINE
DATA SHEET
Customer Service #: (570) 546-9663 • To Order Call: (800) 523-4777 • Fax #: (800) 438-5901
MODEL G0440
2 HP TWO-STAGE CYCLONE DUST COLLECTOR
©2005 BY GRIZZLY INDUSTRIAL ®
Specifications, while deemed accurate, are not guaranteed. 2/2005.
The airflow test probe is located 1.5x duct diameter upstream from the
air inlet. Test pipe length is a minimum of 10x duct diameter.
2 HP GRIZZLY DUST COLLECTOR PERFORMANCE RESULTS
Max CFM Max SP
HP Volts Inlet Impeller
1354 10.4 2 HP 220V 7" 14-1/2"
Restrictor Plate
(inch) Dia. 7" Dia.
6" Dia.
5" Dia. 4" Dia. 3" Dia.2"
Static Pressure
(Inch/H2O) 2.5 3.2 5.1 7.8 9.2 10.0
CFM 1354 1266 1070 829 586 338
Performance Curve
2500
2250
2000
1750
1500
1250
1000
750
500
250
0
0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0 13.0
1354
CFM STATIC PRESSURE (Inch/H2O)
figure 47. CFM for static pressure loss of line
connected to a dust collector & router.
Closest
CFM
(1120)
4.4 sp
loss
— if the CFM for your static pressure loss
is above the requirement of the machine
connected to the end of that branch line,
then dust collection will most likely be
successful. Congratulations! you've just
designed your own dust system. refer to
the
accessories section on Page 34 to
start buying the components necessary to
make your system a reality.
—if the CFM for your static pressure loss is
below the requirement of the machine, then
that line will not effectively collect the dust.
you must then modify some of the factors
in that line to reduce the static pressure
loss. some of the ways to do this include 1)
installing larger duct, 2) reducing amount of
flexible duct used, 3) increasing machine
dust port size, 4) moving machine closer to
dust collector to eliminate duct length, and
5) reducing 90˚ elbows or replacing them
with 45˚ elbows.