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Introduction
Graco Waterborne Fluid Hose (purchased
separately)
A Graco waterborne fluid hose must be used between
the voltage isolation system fluid outlet and the spray
gun fluid inlet. This fluid hose consists of three layers
(see Fig. 2):
D Inner Hose Layer (EE): is a PTFE tube.
D Conductive Hose Layer (DD): covers the PTFE
tube.
D Outer Hose Jacket (FF): is a protective polyethyl-
ene hose cover.
If a hose failure occurs, where the high voltage arcs
through the inner hose layer (EE), the voltage will be
discharged to ground through the conductive hose
layer (DD). When properly installed, the conductive
hose layer is grounded through its connection to the
grounded safety fence or enclosure (CC). All areas of
the fluid hose that are accessible to personnel must be
covered by the outer hose jacket (FF) to avoid electric
shock.
KEY-Fig. 2
DD Conductive Hose Layer
EE Inner Hose Layer
FF Outer Hose Jacket
CC Grounded Enclosure
The portion of the inner hose layer (EE–PTFE tube) that is not
covered by the conductive hose layer (DD), must be inside the
safety fence or enclosure (CC).
The areas of the waterbase fluid hose that are accessible to
personnel during normal operation must be covered by the outer
hose jacket (FF).
Fig. 2
05179
DDEE
CC
FF
H
2
O PRO Voltage Block connection shown