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312775G 27
Grounding
Ground the ProMix system as instructed here and in the
individual component manuals. A ground wire and
clamp, part no. 223547, is available from Graco.
NOTE: Different ground points (unequal potential) may
cause current to flow through component cables, caus-
ing incorrect signals.
EasyKey
Connect a ground wire from the EasyKey ground screw
to a true earth ground. F
IG. 18.
Booth Control
The Booth Control is grounded through the power cable
connection to the fluid station. F
IG. 18.
Gun Flush Box
Connect a ground wire from the Gun Flush Box ground
lug to a true earth ground. F
IG. 18.
Wall Mount Fluid Station
Connect a ground wire from the Wall Mount Fluid Sta-
tion ground screw to a true earth ground. F
IG. 18.
Color Change Module
Connect a ground wire from the Color Change Module
ground screw to a true earth ground. A ground wire and
clamp, part no. 223547, is available from Graco. F
IG. 18.
Flow Meters
Connect the meter cables as shown in the System
Electrical Schematic Hazardous Area on page 31.
Failure to properly connect the shield may cause incor-
rect signals.
Feed Pumps or Pressure Pots
Connect a ground wire and clamp from a true earth
ground to the pumps or pots. See pump or pressure pot
manual.
Air and Fluid Hoses
Use grounded hoses only.
Spray Gun
Follow the grounding instructions in your gun manual.
Fluid Supply Container
Follow local code.
Object Being Sprayed
Follow local code.
All Solvent Pails Used When Purging
Follow local code. Use only conductive metal pails/con-
tainers placed on a grounded surface. Do not place the
pail/container on a nonconductive surface, such as
paper or cardboard, which interrupts the grounding con-
tinuity.
Check Resistance
Have a qualified electrician check resistance between
each ProMix component and true earth ground. If resis-
tance is greater than 1 ohm, a different ground site may
be required. Do not operate the system until the problem
is corrected.
Your system must be grounded. Read Warnings,
page 7. For intrinsic safety, ground wires for the
EasyKey, Fluid Station, Booth Control, and Gun Flush
Box must all be connected to the same true earth
ground. See F
IG. 18, page 28.
To ensure proper grounding, resistance between Pro-
Mix components and true earth ground must be less
than 1 ohm. Read Warnings, page 7.