Grounding
Grounding
Grounding
This equipment must be grounded to reduce the
risk of static sparking and electric shock. Electric
or static sparking can cause fumes to ignite or
explode. Improper grounding can cause electric
shock. Grounding provides an escape wire for the
electric current.
1.
Connect the supply ground wire in the
electrical compartment as shown in
Connect the Supply Wiring, page 11
2.
Connect a ground wire as shown in Fig. 5.
Loosen the ground screw and attach a ground
wire (Y, Graco part 222011, not supplied).
Tighten the ground screw securely. Connect
the other end of the ground wire to a true earth
ground.
Figure 5 Ground Wire
NOTE:
NOTE:
NOTE: Advanced models require installation
of a control module. All pumps connected to a
common control module must be grounded to
the same ground point. Different ground points
(unequal potential) may cause current to flow
through component cables, causing incorrect
signals.
Pump
Pump
Pump
Control
Control
Control Module
Module
Module
ESx4xx
24P822
ESx8xx
24X599
ESxDxx
17V232
ESxHxx
17V233
3.
Fluid
Fluid
Fluid hoses:
hoses:
hoses: Use only electrically conductive
hoses with a maximum of 500 ft. (150 m)
combined hose length to ensure grounding
continuity. Check the electrical resistance of
hoses. If total resistance to ground exceeds 25
megohms, replace hose immediately
4.
Fluid
Fluid
Fluid supply
supply
supply container:
container:
container: Follow your local code.
5.
Solvent
Solvent
Solvent 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 non-conductive surface, such as
paper or cardboard, which interrupts grounding
continuity.
6.
To
To
To maintain
maintain
maintain grounding
grounding
grounding continuity
continuity
continuity when
when
when flushing
flushing
flushing
or
or
or relieving
relieving
relieving pressure:
pressure:
pressure: Hold metal part of the spray
gun or valve firmly to the side of a grounded
metal pail, then trigger the gun or open the valve.
12
333389E
