Warnings; Introduction - Graco PRO AA4500 Instructions-Parts List Manual

~~
INTRODUCTION
How
the PRO
AA4500
Electrostatic
Air-Assisted Airless Spray Gun Operates
WARNING
safety be sure to read and follow the Warnings on
pages 2
to
4 and throughout the text of this
instruction manual.
The air-assisted airless spray gun combines airless and
air spraying concepts. The spraytip shapes the fluid into
a fan pattern, as does a conventional airless spray tip.
Air from the air cap further atomizes the fluid and com-
pletes the atomization of the paint tails
into the pattern to
produce a more uniform pattern.
As the gun is triggered, the regulated air is directed to
the air cap for the air-assist function and air is also
directed to the turbine at the rear of the power cartridge
The regulated air that is directed to the air cap can be
further controlled using the gun's air control valve. This
valve can be used to restrict air flow to the air cap while
maintaining suffcient air flow to the turbine. The air con-
trol valve does not control pattern width. To change pat-
tern width, a new tip size must be selected.
The ability of the PRO AA4500 Electrostatic Spray Gun
to spray at higher fluid pressures provides the additional
power needed to atomize higher solids materials.
The gun's internal power cartridge provides high volt-
age current. The fluid is electrostatically charged
as
it
tracted
to
the grounded-object, wrapping around and
passes the gun's electrode. The charged fluid
is
at-
evenly coating all sudaces.
turned
off to
haveairless atomization if desired. Closing
NOTE The gun's air control valve can be completely
the air control valve does not effect the operation of the
turbine.
The gun's lower voltage setting
(LO)
is adjustable. The
Power
Supply's
Adjustable Lower Voltage
Setting
LO
setting can be adjusted from
45 to
80
kV;
it
is
preset
by the factory at
60
kV.
See page 34 to change the set-
ting. NOTE: The gun's full (HI) voltage setting is 85
kV.
Model 236-031, with Full-Featured Power
Supply
This full-featured power supply includes
a
radio fre-
quency (RF) transmitter. The transmitter sends a signal
to a hand held spray voltage readout monitor, called an
jumper pin
is
provided with the
SVR
and must be
SVR.
The
SVR
readout
is
the actual spray voltage. A
installed in the gun's power supply before the gun will
transmit a signal. See ACCESSORIES to order the
SVR.
Model 236-030, with Basic Power Supply
The basic power supply provided with Gun Model
236-030 does not include the RF transmitter capability.
Alr
Spray Retalnlng
I
Cap Tlp
(orange) (orange)
Nut
Trlgger Safety
Latch
ES
lndlcator
Light
I
Alr
Contro
ES
ON-OFF
Lever
Back View of Gun
ES
HI,
Lever
-LO
0101'
6 308-294