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

Page 20

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

Image 20
Contents Important Safety Instructions InstructionsContents Smart Display Standard Display II 2 GFIRE, EXPLOSION, and Electric Shock Hazard Skin Injection Hazard Equipment Misuse Hazard Gun Overview How the Electrostatic AA Spray Gun WorksChart, page 62, for avail Setup Checklist,Description Purpose See Spray Tip SelectionOperating Mode Bar Graph Smart GunsError Display Key for Figs Description Purpose Description Purpose Diagnostic Mode Alternator Speed Hertz Screen Installation Ventilate the Spray BoothHose Air Supply LineFluid Supply Line Typical Installation Key Description NON-HAZARDOUS AreaGun Setup Gun Setup ChecklistGun Setup LED Indicator Colors Description Pressure DropGrounding Key to Figs Ground the Operator Ground the Gun Check Gun Electrical Grounding Flush Before Using Equipment Check Fluid ResistivityCheck Fluid Viscosity Fluid Resistivity Levels Megohms-cmPressure Relief Procedure OperationStartup ShutdownMaintenance FlushingClean the Gun Daily Maintenance Daily System Care Check Gun Electrical Grounding,Electrical Tests Test Gun ResistanceTest Power Supply Resistance Alternator Removal and Replacement,Test Gun Barrel Resistance Troubleshooting Spray Pattern TroubleshootingProblem Cause Solution Clean the Gun Daily,Gun Operation Troubleshooting Replacement, Power Supply RemovalReplacement, page 45 Test Gun Resistance,See Clean the Gun Daily, Replacement, page 52Prepare the Gun for Service RepairAir Cap, Spray Tip, and Fluid Seat Housing Replacement See Prepare the Gun for Service,Electrode Replacement See Test Gun Resistance,Fluid Filter Replacement Fluid Tube Removal and ReplacementGun Barrel Installation Gun Barrel RemovalFluid Needle Replacement Remove Cap and SpringsPower Supply Removal and Replacement See Prepare the Gun for Service, See Gun Barrel Removal,Alternator Removal and Replacement Alternator Fan Air Adjustment Valve Repair Fan Air Adjustment ValveAtomizing Air Adjustment Valve Repair ES On-Off Valve Repair See Gun Barrel Installation, Air Valve RepairSmart Module Replacement Smart ModuleAir Swivel and Exhaust Valve Replacement Air Inlet Fitting and Air Exhaust ValveStandard Air-Assisted Spray Gun Assembly PartsDescription Qty Smart Air-Assisted Spray Gun Assembly See Smart Module Assembly Alternator Assembly Part No N664 Alternator AssemblyES On-Off Valve Assembly Part No N632 ES On-Off Valve AssemblyFan Air Valve Assembly Part No N634 Fan Air Valve AssemblyAir Cap Assembly Smart Module Assembly Spray Tip Selection Chart AEM Fine Finish Spray TipsAEF Fine Finish Pre-Orifice Spray Tips Orifice Fluid OutputOz/min l/min 41 bar MPa Bar Spray TipRepair Kits, Related Manuals, and Accessories Gun AccessoriesSystem Accessories Test EquipmentOperator Accessories HosesDimensions Gun Model In. mm Weight, oz gTechnical Data Graco Pro Xp Warranty Graco Information