HVLP
HVLP
HVLP Gun
Gun
Gun Setup
Setup
Setup Procedure
Procedure
Procedure
To spray high pressure low volume (HVLP) spray
guns, air pressure at the air cap must be 10 PSI (0.07
MPa, 0.7 bar) or less. To set up an HVLP gun, do
the following:
1.
Install an HVLP air cap.
See
Air Cap Selection Guide, page 80
2.
Follow steps 1–11 in the
3.
Fully open the fluid adjustment valve (H)
counterclockwise.
4.
Adjust the air in the air cap.
a.
Fully close the fan air adjustment valve (F)
clockwise, then open it counterclockwise two
turns.
b.
Fully close the atomizing air restrictor valve
(G) counterclockwise, then open it clockwise
one turn.
c.
Turn ON (I) the ES On-Off switch (J).
d.
Set the gun air regulator to deliver a minimum
45 psi (0.32 MPa, 3.2 bar) at the gun when
triggered, to ensure full spraying voltage.
Table
Table
Table 6
6
6 Pressure
Pressure
Pressure Drop
Drop
Drop
Air
Air
Air Hose
Hose
Hose
Length
Length
Length in
in
in ft
ft
ft (m)
(m)
(m)
using
using
using 5/16
5/16
5/16 inch
inch
inch (8
(8
(8
mm)
mm)
mm) diameter
diameter
diameter hose
hose
hose
Air
Air
Air Regulator
Regulator
Regulator
Setting
Setting
Setting in
in
in psi
psi
psi
(MPa,
(MPa,
(MPa, bar)
bar)
bar)
with
with
with gun
gun
gun triggered
triggered
triggered
15 (4.6)
55 (0.38, 3.8)
25 (7.6)
65 (0.45, 4.5)
50 (15.3)
80 (0.56, 5.6)
Note
The HVLP air cap requires a high
volume of air to atomize paint at low
pressure. Gun air regulator static
pressure settings of 70 PSI or higher
are typically required. To achieve
the required gun air pressures, use
a shorter length air hose or a larger
diameter air hose. See Grounded Air
Hoses in
.
e.
Verify that the ES indicator (K) is lit. On
Smart guns, this is the Hz indicator.
3A7504A
25
