Introduction; How The Electrostatic Air Spray Gun Works; Gun Overview - Graco PRO XS3 309292L Instruction Manual

Introduction

Introduction
How the Electrostatic Air Spray
Gun Works
The air hose supplies air to the spray gun. Part of the air
operates the turbine and the rest of the air atomizes the
fluid being sprayed. The turbine generates power, which
is converted by the power cartridge to supply high volt-
age current to the gun's electrode.
The pump supplies fluid to the hose and gun, where the
fluid is electrostatically charged as it passes the elec-
trode. The charged fluid is attracted to the grounded
workpiece, wrapping around and evenly coating all sur-
faces.

Gun Overview

The electrostatic gun includes the following controls
(see F . 1.).
IG
• FLUID adjustment valve. Adjusts fluid rod travel.
Use only in low flow conditions, to reduce wear.
ES INDICATOR
ES ON/OFF
RESTRICTOR
Standard Model
Fig. 1. Gun Overview
6
ES
I O
AIR
FLUID
ti1266a
• Fan AIR adjustment valve. Adjusts fan size and
shape.
• Atomizing air RESTRICTOR valve. Restricts
atomizing air flow. Replace with plug (included) if
desired.
• ES ON/OFF valve. Turns electrostatics ON (I) or
OFF (0).
• ES INDICATOR (standard gun only). Green when
ES is ON (I).
• Voltage/current DISPLAY (smart models only).
Shows voltage (V) and current (A). Green=spray,
yellow/red=see Troubleshooting, page 23.
• ES HI/LO switch (smart models only). Sets volt-
age to HI or LO (factory settings).
• LO VOLTAGE adjustment (smart models only).
Remove plug to adjust to four settings.
ES HI/LO
ES ON/OFF
RESTRICTOR
DISPLAY
LO VOLTAGE
0 100 %
KV
HI
LO
ES
ES
I I O O
AIR
FLUID
ti1253a
Smart Model
309292L