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K9-306 FlexShaft
TM
Drain Cleaning Machine
999-995-214.10_REV. D
11
as cleaning the inside of the pipe, centering
the chain knocker in the pipe and spreading
lining compound. See the specific brush infor-
mation for the types of uses it is appropriate
for.
Brushes can be assembled in a variety of
configurations, with some options shown in
Figure 8.
Figure 8 – Example Brush Configurations
Collar distance can be modified to your
preference for the specific pipe/applica-
tion. As collar distance increases, the di-
ameter of the chains decreases, and vice
versa. Improperly set collar distance can
reduce the efficiency of pipe cleaning.
7. Test fit the chain knocker, knocker bushing
and collar spacer on the cable as shown
in Figure 7. Chains should be straight – do
not assemble with chains twisted. To pre-
vent excessive cable end wear, cable end
should be flush with the end of the collar.
Check length of exposed cable. To reduce
the risk of cable flip over and damage,
exposed cable cannot exceed ¼" (6 mm).
If needed, cut a knocker bushing from
sheath to limit exposed cable. Always
use a knocker bushing to reduce wear
on the sheath end.
8. With the chain knocker correctly installed
on the cable as shown in Figure 7, use
the supplied hex wrench to securely tight-
en the collar set screws. If the set screws
are not secure, the chain knocker could
slip and damage the cable or be lost
down the drain.
Installing Brushes
Brushes are available for various uses, such
Collar Distance Chart
Knocker
Figure 7 – Chain Knocker Installation/Adjustment
Sheath End
Collar Spacer
Cable
Set Scew
(3 mm HEX)
Sheath
Collar Distance
Knocker Collar
Knocker Chain
Cable End
Flush To
Collar
Carbide Cutting Tip
(If Equipped)
Knocker Bushing
Knocker Collar
Set Scew
(3 mm HEX)
Exposed Cable
.25" (6.35 mm)
Maximum
Machine
Cable Number Number of Nominal Recommended Collar
Size of Chains Links/Chain Pipe Size Distance
K9-306
3
/8"
3 11 3" (75 mm) 4" (102 mm)
3 13 4" (100 mm) 4
1
/2" (114 mm)
3 17 6" (150 mm) 5" (127 mm)
Brush Only
Brush with Securing
Ring
Centering Guide
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