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7.2 Performance problems
Poor
performance;
lack of suction.
1. Filters are dirty.
1. Clean filters.
2. There is a restriction in the duct line.
2. Remove dust line from collector inlet and
unblock the restriction in the duct line. A
plumbing snake may be necessary.
3. The machine is too far away from the
point of section, or there are too many
sharp bends in the ducting.
3. Relocate the machine closer to the
suction, and rework ducting without sharp
bends.
4. The lumber is wet, and the dust is not
flowing smoothly.
4. Process lumber with less than 20%
moisture content.
5. There is a leak in the ducting, or a
series of small leaks, or too many open
ports.
5. Rework the ducting to eliminate all leaks.
Close dust ports for lines not being used.
6. The ducting and ports are incorrectly
sized.
6. Reinstall correctly sized ducts and
fittings.
7. Too many open branch lines at one
time may cause a velocity drop in the
main line.
7. Close dust ports for lines not being used.
Dust blows into
the air from the
machine.
1. Duct clamps or dust collection bags
are not properly clamped and secured.
1. Re-secure ducts and dust collection
bag, making sure duct and bag clamp are
tight.
2. Sealing strips are loose or damaged.
2. Retighten all mounting and sealing
points, replace damaged sealing strips.
