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Grounding
Your system must be grounded. Read Warnings,
page 6. For intrinsic safety, ground wires for the
EasyKey, Fluid Station, and Gun Flush Box must all be
connected to the same true earth ground. See F
page 28.
Ground the ProControl system as instructed here and in
the individual component manuals. A ground wire and
clamp, part no. 223547, is available from Graco.
NOTE: To prevent electrical noise interference from high
voltage equipment, do not connect the robot ground to
the same ground point used by these ProControl com-
ponents.
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
Gun Flush Box (Manual or Semi-automatic
mode only)
Connect a ground wire from the Gun Flush Box ground
lug to a true earth ground. F
Wall Mount Fluid Station
Connect a ground wire from the Wall Mount Fluid Sta-
tion ground screw to a true earth ground. F
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
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.
3A1163A
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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.
. 14,
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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
To ensure proper grounding, resistance between Pro-
Mix components and true earth ground must be less
than 1 ohm. Read Warnings, page 6.
Have a qualified electrician check resistance between
each ProControl component and true earth ground. If
resistance is greater than 1 ohm, a different ground site
may be required. Do not operate the system until the
problem is corrected.
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IG
Electrical
27
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