Grizzly G0777, Owner'S Manual

Page: 30 / 60

-28-
Model G0777/G0777HEP (Mfd. Since 04/19)
SECTION 4: DESIGNING THE
SYSTEM
Duct Material
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
buildup (refer to
System Grounding at the end of
this section). Another problem with using plastic
duct 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.
Figure 37. Examples of plastic ducting
components (see Accessories on Page 40).
Plastic Duct
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 buildup.
General
Always guard against
static electrical build up
by grounding all dust
collection lines.
The Model G0777/G0777HEP 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 G0777/G0777HEP 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.