Graco PRO 5500wb Instructions-Parts List Manual page 8

Gun Features and Options
(Refer to page 7)
D The gun is designed for use with a reciprocator,
and it can be directly mounted to a one-half inch
rod. With additional brackets, the gun can be
mounted for robotic applications.
D The gun is designed for quick-disconnect, which
enables the operator to quickly remove the spray
gun without disconnecting the fluid and air lines to
the gun.
D The gun functions are activated from a separate
controller that sends the appropriate signal to the
actuating solenoids. Refer to Fig. 2, page 10.
D An optional fiber optic readout system can be
installed to monitor the gun's spraying voltage. A
fiber optic cable connected to the gun manifold
carries the signal from the gun to a remote ES
(electrostatic) display module. An ES Display
Module, part no. 224117, is available and will
display the gun's spraying voltage and current. A
battery operated ES Display Module, part no.
189762, is also available; it displays the gun's
spraying voltage only. Refer to Fig. 3, page 10.
D Part no. 238091 spray gun has a fluid regulator
located at the gun barrel inlet. The fluid regulator
provides precise fluid control.
WARNING
ELECTRIC SHOCK HAZARD
To reduce the risk of an electric shock,
do not use the Graco ES Display Module
readings to determine if your system is
discharged. The display modules will only display
the system voltage while the guns power supply
is operating. Follow the Fluid Voltage Discharge
and Grounding Procedure, page 19, to ensure
the system is discharged.
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.
8 308496
Introduction
This fluid hose consists of three layers (see Fig. 1):
D Inner Hose Layer (EE): is a PTFErtube.
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. 1
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 waterborne fluid hose that are accessible to per-
sonnel during normal operation must be covered by the outer
hose jacket (FF).


EE
Fig. 1
CC
2
H O PRO Voltage Block connection shown
FF 
DD
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