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Model W1867/W1868/W1869 (For Machines Mfd. Since 11/18)
SE
TU
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DESIGNING.THE.SYSTEM
General
Duct.Material
Plastic.Duct
Figure.34.
Examples of plastic ducting
components.
The Model W1867/W1868/W1869 works quite
well as a point-of-use dust collector, or for
collecting dust from up to two machines (Model
W1867) or up to three machines (Models W1868
and W1869) simultaneously. The locking swivel
casters make it easy to move around the shop
near the machine being used.
• Avoid using more than 10' of flexible hose
on any ducting line. The ridges inside
flexible house greatly increase pressure
loss, which reduces suction performance.
• Keep ducts between the dust collector and
machines as short as possible.
• Keep ducting directional changes to a
minimum. The more curved fittings you
use, the greater the loss of suction at the
dust-producing machine.
• Gradual directional changes are more
efficient than sudden directional changes
(i.e. use 45° elbows in place of 90° elbows
whenever possible).
• The simpler the system, the more efficient
and less costly it will be.
Tips.for.Optimum.Performance
You have many choices regarding main line and
branch line duct material. For best results, use
smooth metal duct for the main line and branch
lines, then use short lengths of flexible hose to
connect each machine to the branch lines.
Plastic duct is also a popular material for home
shops. However, be aware that there is a fire or
explosion hazard if plastic duct material is not
properly grounded to prevent static electrical
build-up. (Refer to
System.Grounding
later in
this section.) Another problem with using plastic
is that it is less efficient per foot than metal.
The popularity of plastic duct is due to the fact
that it is an economical and readily available
product. It is also simple to assemble and easily
sealed against air loss. The primary disadvantage
of plastic duct for dust collection is the inherent
danger of static electrical build-up.
Always.
guard.
against.
static. electrical. build.
up. by. grounding. all. dust.
collection.lines.
Plastic. duct. generates.
static. electrical. buildup.
that. can. cause. fire. or.
shock.. Properly. ground. it.
to.reduce.this.risk.
Always.make.sure.there.are.no.open.flames.
or.pilot.lights.in.the.same.room.as.the.dust.
collector..There.is.a.risk.of.explosion.if.too.
much.fine.dust.is.dispersed.into.the.air.with.
an.open.flame.present.
Summary of Contents for W1867
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