Installation
Installation
Installation
General
General
General Information
Information
Information
• The
is only a guide for installing
system components and accessories. It is not
an actual system design. Contact your Graco
distributor for assistance in designing a system to
suit your particular needs.
• Always use Genuine Graco Parts and Accessories,
available from your Graco distributor. If you supply
your own accessories, be sure they are adequately
sized and pressure-rated for your system.
• Reference numbers and letters in parentheses
refer to the reference numbers in the figures and in
the parts lists.
Grounding
Grounding
Grounding
The equipment must be grounded to reduce the
risk of static sparking. Static sparking can cause
fumes to ignite or explode. Grounding provides an
escape wire for the electric current.
Ground the suppressor and the rest of your system.
Ground the suppressor and all other spray equipment
used or located in the spray area. The following are
minimum requirements for grounding a basic spray
system. Your system may include other equipment or
objects which must also be grounded. Always check
your local electrical code for detailed grounding
instructions. Be sure your system is connected to a
true earth ground.
• Pump:
Pump:
Pump: Use a ground wire and clamp as described
in your separate pump instruction manual.
• Air
Air
Air compressors
compressors
compressors and
and
and hydraulic
hydraulic
hydraulic power
power
power supplies:
supplies:
supplies:
Follow the manufacturer’s recommendations.
• Air
Air
Air and
and
and fluid
fluid
fluid lines:
lines:
lines: Use only grounded hoses
with a maximum of 150 m (500 ft) combined
hose length to ensure grounding continuity. See
Hose Grounding Continuity, page 6
.
• Surge
Surge
Surge suppressor:
suppressor:
suppressor: Use a ground wire and clamp.
Loosen the grounding screw (19). Insert one end
of a 12 ga (1.5 mm
2
) minimum ground wire (M)
behind the grounding screw and tighten the screw
securely. Connect the clamp end of the ground
wire to a true earth ground. For a ground wire and
clamp, order Part No. 222011.
• Spray
Spray
Spray gun:
gun:
gun: Obtain grounding through a connection
to a properly grounded fluid hose and pump.
• Object
Object
Object being
being
being sprayed:
sprayed:
sprayed: Follow your local code.
• Fluid
Fluid
Fluid supply
supply
supply container:
container:
container: Follow your local code.
• All
All
All fluid
fluid
fluid pails
pails
pails used
used
used when
when
when flushing:
flushing:
flushing: Follow your
local code. Use only conductive metal pails
placed on a grounded surface. Do not place the
pail on a nonconductive surface, such as paper
or cardboard, which interrupts the grounding
continuity.
• To maintain grounding continuity when flushing or
relieving pressure, always hold a metal part of the
gun firmly to the side of a grounded metal pail,
then trigger the gun.
Figure 1 Ground the Suppressor
Hose
Hose
Hose Grounding
Grounding
Grounding Continuity
Continuity
Continuity
Proper hose grounding continuity is essential to
maintaining a grounded spray system. Check the
electrical resistance of your air and fluid hoses at
least once a week. If your hose does not have a
tag on it which specifies the maximum electrical
resistance, contact the hose supplier or manufacturer
for the maximum resistance limits. Use a resistance
meter in the appropriate range for your hose to
check the resistance. If the resistance exceeds the
recommended limits, replace the hose immediately.
Flushing
Flushing
Flushing Safety
Safety
Safety
Before flushing, be sure the entire system
and flushing pails are properly grounded. See
6
3A6103A