Gun Setup

19.Check that the ES indicator (K) [Hz indicator on Smart guns] is lit. See the following table.

Table 2 . LED Indicator Colors

Indicator

Description

Color

 

 

 

Green

When spraying, the indicator

 

should remain green, indicating

 

sufficient air pressure to the

 

alternator turbine.

Amber

If the indicator changes to amber

 

after 1 second, the air pressure

 

is too low. Increase air pressure

 

until the indicator is green.

Red

If the indicator changes to red

 

after 1 second, the air pressure is

 

too high. Decrease air pressure

 

until the indicator is green.

20.Set the gun air regulator to deliver a minimum of 45 psi (0.32 MPa, 3.2 bar) at the gun when triggered, to ensure full spraying voltage. See the table below.

Table 3 . Pressure Drop

Air

Hose

Air Regulator Setting

Length in ft (m)

in psi (MPa, bar)

(using 5/16 in. [8

[with gun triggered]

mm] diameter hose)

 

 

15

(4.6)

52

(0.36, 3.6)

25

(7.6)

57

(0.40, 4.0)

50

(15.3)

68

(0.47, 4.7)

75

(22.9)

80

(0.56, 5.6)

 

 

 

 

100

(30.5)

90

(0.63, 6.3)

 

 

 

 

21.Turn the atomizing air adjustment valve counterclockwise until any tails disappear.

22.If desired atomization is not achieved, change the tip size. The smaller the tip orifice, the finer the atomization.

23.Spray a test piece. Examine the edges for coverage. If wrap is poor, see Troubleshooting, page 35.

NOTE: If a narrower pattern is needed occasionally, open the fan air adjustment valve slightly. (Excessive fan air flow can cause paint buildup on the air cap.)

20

3A2495C

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Graco 3A2495C important safety instructions LED Indicator Colors Description, Pressure Drop