Grizzly 1 1/2 HP Cyclone G0703 - Manual (Page 26)

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Model g0703/g0703p (Mfg. Since 3/12)
section 4: designing the
system
duct material general
You have many choices regarding main line and
branch line duct material. For best results, use
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 used
for dust collection without being grounded against
static electrical charge build-up. This topic will be
discussed later in this section. Another problem
with using plastic is that it is less efficient per foot
than metal.
Plastic duct generates static
electrical buildup that can
cause fire or shock. Properly
ground it to reduce this risk.
plastic duct
figure 31. Examples of plastic ducting
components.
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.
the Model g0703/g0703p is designed to col-
lect dust from one machine at a time. this can
be accomplished by either connecting it to one
machine at a time or by connecting it to multiple
machines and using blast gates to control which
branch is active.
the Model g0703/g0703p works quite well as
a point of use dust collector. the wheels make it
easy to move around the shop near the machine
being used.
tips for optimum performance
• Avoid using more than 10' of flexible hose on
any connection.
• Keep ducts between the dust collector and
machines as short as possible.
• Keep ducting directional changes to a mini-
mum. the more curved fittings you use, the
greater the loss of suction at the dust produc-
ing machine.
• gradual directional changes are more effi-
cient than sudden directional changes (i.e.
use 45° elbows in place of 90° elbows when-
ever possible).
• the simpler the system, the more efficient
and less costly it will be.