Graco 1:1 Extruder [4/12] Grounding

Graco 1:1 Extruder [4/12] Grounding
Grounding
4 310726H
Grounding
Pump: use ground wire and clamp. Loosen grounding
lug locknut (A) and washer (B). Insert 12 gauge mini-
mum ground wire end (D) into lug slot (C) and tighten
locknut securely. Connect ground clamp to a true earth
ground.
Air and fluid hoses: use only electrically conductive
hoses. Check electrical resistance of hoses once a
week. Refer to the hose tag or contact supplier for maxi-
mum resistance limits. If total resistance to ground
exceeds limits, replace hose immediately.
Air compressor: follow manufacturer’s recommenda-
tions.
Spray gun / Dispense valve: ground through connec-
tion to a properly grounded fluid hose and pump.
Fluid supply container: follow local code.
Object being sprayed: follow local code.
Solvent pails used when flushing: follow local code.
Use only conductive metal pails, placed on a grounded
surface. Do not place the pail on a nonconductive sur-
face, such as paper or cardboard, which interrupts
grounding continuity.
To maintain grounding continuity when flushing or
relieving pressure: hold metal part of the spray
gun/dispense valve firmly to the side of a grounded
metal pail, then trigger the gun/valve.
Operation
WARNING
Your system must be grounded. Read warnings, page
2.
F
IG. 1
D
A
B
C
WARNING
Keep your fingers, hands, and tools away from the
priming piston and the air motor piston during opera-
tion and whenever the pump air and fluid pressure is
not fully relieved. The pump priming piston extends
below the foot valve during operation and could pinch
or amputate your fingers or hands as it moves up into
the cylinder.
Be sure all moving part shields are installed and safety
devices are operating properly before each use.
WARNING
Tighten all fluid connections securely before each use.
High pressure fluid can dislodge a loose coupling or
allow high pressure spray to be emitted from the cou-
pling.
CAUTION
Never operate one pump alone. Do not disconnect
one pump or allow a pump to run out of material. The
system is designed to have both pumps run together.
Running one pump alone puts too much stress on the
hardware that connects the air motor to the displace-
ment pumps and could cause the hardware to frac-
ture.
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