Instructions - Parts
Pro Xp™ Electrostatic
Air Spray Gun |
3A2494P |
EN |
For use in Class I, Div. I Hazardous Locations using Group D materials.
ForuseinGroupII,Zone1ExplosiveAtmosphereLocationsusingGroupIIAmaterials. Forprofessional use only.
Important Safety Instructions
This equipment could present hazards if not operated according to the information in this manual. Read all warnings and instructions in this manual before using the equipment. Save these instructions.
100 psi (0.7 MPa, 7.0 bar) Maximum Fluid Working Pressure
100 psi (0.7 MPa, 7.0 bar) Maximum Air Working Pressure
See page 3 for model part numbers and approval information.
PROVEN QUALITY. LEADING TECHNOLOGY.
Contents |
|
Models............................................................... |
3 |
Approvals........................................................... |
7 |
Related Manuals ................................................ |
7 |
Warnings ........................................................... |
8 |
Gun Overview .................................................... |
11 |
How the Electrostatic Spray Gun |
|
Works............................................ |
11 |
Controls, Indicators, and Components........... |
12 |
Smart Guns................................................. |
13 |
Installation.......................................................... |
18 |
Warning Sign............................................... |
18 |
Ventilate the Spray Booth............................. |
18 |
Air Supply Line ............................................ |
19 |
Fluid Supply Line ......................................... |
19 |
Grounding ................................................... |
21 |
Gun Setup.......................................................... |
25 |
Gun Setup Procedure................................... |
25 |
Soft Spray Gun Setup Procedure.................. |
28 |
HVLP Gun Setup Procedure......................... |
29 |
Round Spray Gun Setup Procedure.............. |
31 |
Abrasive Material Gun Setup |
|
Procedure...................................... |
33 |
Check Gun Electrical Grounding................... |
34 |
Check Fluid Resistivity ................................. |
35 |
Check Fluid Viscosity................................... |
35 |
Flush Before Using Equipment...................... |
35 |
Operation........................................................... |
36 |
Pressure Relief Procedure............................ |
36 |
Startup........................................................ |
37 |
Shutdown.................................................... |
37 |
Maintenance ...................................................... |
38 |
Daily Care and Cleaning Checklist ................ |
38 |
Flushing...................................................... |
38 |
Clean the Gun Daily..................................... |
40 |
Daily System Care....................................... |
41 |
Electrical Tests................................................... |
42 |
Test Gun Resistance.................................... |
42 |
Test Power Supply Resistance ..................... |
43 |
Test Electrode Resistance............................ |
43 |
Troubleshooting.................................................. |
44 |
Spray Pattern Troubleshooting...................... |
44 |
Gun Operation Troubleshooting.................... |
45 |
Electrical Troubleshooting ............................ |
46 |
Repair................................................................ |
47 |
Prepare the Gun for Service ......................... |
47 |
Air Cap and Nozzle Replacement.................. |
48 |
Electrode Replacement................................ |
49 |
Fluid Packing Rod Removal.......................... |
50 |
Packing Rod Repair..................................... |
50 |
Barrel Removal............................................ |
52 |
Barrel Installation......................................... |
52 |
Power Supply Removal and |
|
Replacement.................................. |
53 |
Alternator Removal and Replacement ........... |
54 |
FluidTubeRemovalandReplacement........... |
56 |
Fan Air Adjustment Valve Repair .................. |
57 |
Atomizing Air Restrictor Valve Repair............ |
58 |
ES On-Off and Fluid Adjustment Valve |
|
Repair............................................ |
59 |
Air Valve Repair........................................... |
60 |
Smart Module Replacement.......................... |
61 |
Air Swivel and Exhaust Valve |
|
Replacement.................................. |
62 |
Parts.................................................................. |
63 |
Gun Models with Standard Display................ |
63 |
Gun Models with Smart Display .................... |
66 |
Packing Rod Assembly................................. |
69 |
Alternator Assembly..................................... |
70 |
ESOn-OffandFluidAdjustmentValve........... |
71 |
Fan Air Adjustment Valve Assembly.............. |
72 |
Quick Adjust Fan Valve Assembly................. |
72 |
Atomizing Air Restrictor Valve |
|
Assembly....................................... |
73 |
Smart Module Assembly............................... |
74 |
Round Spray Assembly................................ |
75 |
High Conductivity Fluid Tube Assembly: 40 |
|
kV.................................................. |
77 |
High Conductivity Fluid Tube Assembly: 60 |
|
kV and 85 kV.................................. |
78 |
Fluid Nozzles ..................................................... |
79 |
Fluid Nozzle Selection Chart......................... |
79 |
Fluid Nozzle Performance Charts.................. |
80 |
Air Caps............................................................. |
82 |
Air Cap Selection Guide ............................... |
82 |
Air Consumption Charts ............................... |
87 |
Electrode Selection Chart.................................... |
88 |
Repair Kits and Accessories................................ |
89 |
Gun Accessories.......................................... |
89 |
Inline Fluid Filter Kit Accessories................... |
90 |
Operator Accessories................................... |
90 |
System Accessories..................................... |
90 |
Signs .......................................................... |
91 |
Test Equipment ........................................... |
91 |
Hoses ......................................................... |
92 |
Dimensions........................................................ |
93 |
Technical Specifications...................................... |
94 |
California Proposition 65..................................... |
94 |
2 |
3A2494P |
Models
General Gun Models
Equipped with standard electrode, nozzle, air cap and fluid tube. For applying a Class A finish with standard and specialty coatings.
Part No. |
Series |
kV |
Display |
Electrode |
Nozzle |
Air Cap |
Fluid Tube |
|
|
|
|
|
(mm) |
|
|
L40M10 |
A |
40 |
Smart |
Std |
1.5 Std |
Std |
Std |
L40T10 |
C |
40 |
Std |
Std |
1.5 Std |
Std |
Std |
L40T12 |
A |
40 |
Std |
Std |
1.2 Std |
Std |
Std |
L60M10 |
C |
60 |
Smart |
Std |
1.5 Std |
Std |
Std |
L60M12 |
C |
60 |
Smart |
Std |
1.2 Std |
Std |
Std |
L60T10 |
C |
60 |
Std |
Std |
1.5 Std |
Std |
Std |
L60T12 |
C |
60 |
Std |
Std |
1.2 Std |
Std |
Std |
L60T21 |
A |
60 |
Std |
Std |
1.0 Std |
Std |
Std |
L85M10 |
C |
85 |
Smart |
Std |
1.5 Std |
Std |
Std |
L85M12 |
A |
85 |
Smart |
Std |
1.2 Std |
Std |
Std |
L85T10 |
C |
85 |
Std |
Std |
1.5 Std |
Std |
Std |
L85T12 |
A |
85 |
Std |
Std |
1.2 Std |
Std |
Std |
|
|
|
|
|
|
|
|
L85T50* |
A |
85 |
Std |
Std |
1.5 Std |
Std |
Std |
|
|
|
|
|
|
|
|
*Equipped with a quick-adjust fan valve
3A2494P |
3 |
Models
High Conductivity Gun Models
Equipped with a longer High Conductivity fluid tube for spraying lower resistivity material. Most models are also equipped with high wear electrode, precision high wear nozzle, and standard air cap. For applying a class A finish with abrasive and metallic coatings.
Part No. |
Series |
kV |
Display |
Electrode |
Nozzle |
Air Cap |
Fluid Tube |
|
|
|
|
|
(mm) |
|
|
L40M16 |
A |
40 |
Smart |
HW |
1.5 PHW |
Std |
HC |
|
|
|
|
|
|
|
|
L40T13 |
B |
40 |
Std |
HW |
1.5 Std |
Std |
HC |
|
|
|
|
|
|
|
|
L40T16 |
C |
40 |
Std |
HW |
1.5 PHW |
Std |
HC |
|
|
|
|
|
|
|
|
L40T26 |
A |
40 |
Std |
HW |
1.2 PHW |
Std |
HC |
|
|
|
|
|
|
|
|
L60M26 |
A |
60 |
Smart |
HW |
1.2 PHW |
Std |
HC |
L60M16 |
C |
60 |
Smart |
HW |
1.5 PHW |
Std |
HC |
L60T26 |
A |
60 |
Std |
HW |
1.2 PHW |
Std |
HC |
L60T13 |
B |
60 |
Std |
HW |
1.5 Std |
Std |
HC |
L60T16 |
C |
60 |
Std |
HW |
1.5 PHW |
Std |
HC |
L85M16 |
C |
85 |
Smart |
HW |
1.5 PHW |
Std |
HC |
|
|
|
|
|
|
|
|
L85M26 |
A |
85 |
Smart |
HW |
1.2 PHW |
Std |
HC |
|
|
|
|
|
|
|
|
L85T16 |
C |
85 |
Std |
HW |
1.5 PHW |
Std |
HC |
|
|
|
|
|
|
|
|
L85T26 |
A |
85 |
Std |
HW |
1.2 PHW |
Std |
HC |
|
|
|
|
|
|
|
|
L85T56* |
A |
85 |
Std |
HW |
1.5 PHW |
Std |
HC |
|
|
|
|
|
|
|
|
*Equipped with a quick-adjust fan valve
kV Booster Gun Models
The 40 kV Booster provides the transfer efficiency of a 60 kV gun in a smaller, more compact size.
Part No. |
Series |
kV |
Display |
Electrode |
Nozzle |
Air Cap |
Fluid Tube |
|
|
|
|
|
(mm) |
|
|
L40M14 |
A |
40 |
Smart |
Std |
1.5 Std |
Std |
Std |
|
|
|
|
|
|
|
|
L40M15 |
A |
40 |
Smart |
HW |
1.5 PHW |
Std |
HC |
|
|
|
|
|
|
|
|
L40T14 |
C |
40 |
Std |
Std |
1.5 Std |
Std |
Std |
|
|
|
|
|
|
|
|
L40T15 |
C |
40 |
Std |
HW |
1.5 PHW |
Std |
HC |
|
|
|
|
|
|
|
|
4 |
3A2494P |
Models
Round Spray Gun Models
Equipped with round spray nozzle and air cap. For round spray pattern applications.
Part No. |
Series |
kV |
Display |
Electrode |
Nozzle |
|
Air Cap |
Fluid Tube |
|
|
|
|
|
(mm) |
|
|
|
L40T31 |
A |
40 |
Std |
Std |
Small Pattern |
|
Std |
|
|
|
|
|
|
|
|
||
L40T32 |
A |
40 |
Std |
Std |
Medium Pattern |
Std |
||
|
|
|
|
|
|
|
|
|
L60T11 |
C |
60 |
Std |
Std |
Large Pattern |
|
Std |
|
|
|
|
|
|
|
|
|
|
L60T31 |
A |
60 |
Std |
Std |
Small Pattern |
|
Std |
|
|
|
|
|
|
|
|
||
L60T32 |
A |
60 |
Std |
Std |
Medium Pattern |
Std |
||
|
|
|
|
|
|
|
|
|
L85T31 |
A |
85 |
Std |
Std |
Small Pattern |
|
Std |
|
|
|
|
|
|
|
|
||
L85T32 |
A |
85 |
Std |
Std |
Medium Pattern |
Std |
||
|
|
|
|
|
|
|
|
|
Soft Spray Gun Models
Equipped with soft spray air cap. For applying a class A finish to small, lightweight parts.
Part No. |
Series |
kV |
Display |
Electrode |
Nozzle |
Air Cap |
Fluid Tube |
|
|
|
|
|
(mm) |
|
|
L40T71 |
A |
40 |
Std |
Std |
1.0 Std |
Soft Spray |
Std |
|
|
|
|
|
|
|
|
L60M71 |
A |
60 |
Smart |
Std |
1.0 Std |
Soft Spray |
Std |
|
|
|
|
|
|
|
|
L60M72 |
A |
60 |
Smart |
Std |
1.2 Std |
Soft Spray |
Std |
|
|
|
|
|
|
|
|
L60T71 |
A |
60 |
Std |
Std |
1.0 Std |
Soft Spray |
Std |
|
|
|
|
|
|
|
|
L60T72 |
A |
60 |
Std |
Std |
1.2 Std |
Soft Spray |
Std |
|
|
|
|
|
|
|
|
L85M71 |
A |
85 |
Smart |
Std |
1.0 Std |
Soft Spray |
Std |
|
|
|
|
|
|
|
|
L85T71 |
A |
85 |
Std |
Std |
1.0 Std |
Soft Spray |
Std |
|
|
|
|
|
|
|
|
Aerospace Gun Models
Equipped with aerospace air cap, high wear electrode, and precision high wear nozzle. For applying high solids and aerospace coatings.
Part No. |
Series |
kV |
Display |
Electrode |
Nozzle |
Air Cap |
Fluid Tube |
|
|
|
|
|
(mm) |
|
|
L85T73 |
A |
85 |
Std |
HW |
1.2 PHW |
AERO |
Std |
|
|
|
|
|
|
|
|
L85T75 |
A |
85 |
Std |
HW |
1.5 PHW |
AERO |
Std |
|
|
|
|
|
|
|
|
L85T78 |
A |
85 |
Std |
HW |
1.8 PHW |
AERO |
Std |
|
|
|
|
|
|
|
|
3A2494P |
5 |
Models
HVLP Gun Models
Equipped with HVLP air cap.
Part No. |
Series |
kV |
Display |
Electrode |
Nozzle |
Air Cap |
Fluid Tube |
|
|
|
|
|
(mm) |
|
|
L40M77 |
A |
40 |
Smart |
Std |
1.5 Std |
HVLP |
Std |
|
|
|
|
|
|
|
|
L40T77 |
A |
40 |
Std |
Std |
1.5 Std |
HVLP |
Std |
|
|
|
|
|
|
|
|
L60M77 |
A |
60 |
Smart |
Std |
1.5 Std |
HVLP |
Std |
|
|
|
|
|
|
|
|
L60T77 |
A |
60 |
Std |
Std |
1.5 Std |
HVLP |
Std |
|
|
|
|
|
|
|
|
L85M77 |
A |
85 |
Smart |
Std |
1.5 Std |
HVLP |
Std |
|
|
|
|
|
|
|
|
L85T77 |
A |
85 |
Std |
Std |
1.5 Std |
HVLP |
Std |
|
|
|
|
|
|
|
|
High Air Flow Gun Models
Equipped with ES On-Off with Air Restrictor and Fluid Adjustment Valve, which limits air flow to the turbine. For applications that require high air flow at the air cap.
Part No. |
Series |
kV |
Display |
Electrode |
Nozzle |
Air Cap |
Fluid Tube |
|
|
|
|
|
(mm) |
|
|
L60M57 |
A |
60 |
Smart |
Std |
1.5 Std |
Std |
Std |
|
|
|
|
|
|
|
|
L60T57 |
A |
60 |
Std |
Std |
1.5 Std |
Std |
Std |
|
|
|
|
|
|
|
|
L85M57 |
A |
85 |
Smart |
Std |
1.5 Std |
Std |
Std |
|
|
|
|
|
|
|
|
L85T57 |
A |
85 |
Std |
Std |
1.5 Std |
Std |
Std |
|
|
|
|
|
|
|
|
Fixed Fluid Flow Gun Models
Equipped with ES On-Off and Fixed Fluid Valve, which extends electrode and nozzle life. For applications with abrasive, metallic, and extremely abrasive materials.
Part No. |
Series |
kV |
Display |
Electrode |
Nozzle |
Air Cap |
Fluid Tube |
|
|
|
|
|
(mm) |
|
|
L60T98 |
A |
60 |
Std |
Short |
1.5 PHW |
Std |
Std |
|
|
|
|
|
|
|
|
L60T99 |
A |
60 |
Std |
Short |
1.5 PHW |
Std |
HC |
|
|
|
|
|
|
|
|
L85T90 |
A |
85 |
Std |
HW |
1.5 PHW |
Std |
Std |
|
|
|
|
|
|
|
|
L85T96 |
A |
85 |
Std |
HW |
1.5 PHW |
Std |
HC |
|
|
|
|
|
|
|
|
6 |
3A2494P |
Approvals
|
II 2 G |
|
0.24 mJ T6 |
|
FM12ATEX0068 |
|
EN 50050-1 |
|
Ta 0°C – 50°C |
Related Manuals |
|
|
|
Manual No. |
Description |
|
|
3A2498 |
Round Spray Kit, Instructions (large pattern) |
|
|
3A6929 |
Round Spray Kit, Instructions (small and medium pattern) |
|
|
3A7005 |
Quick Adjust Fan Valve Kit, Instructions |
|
|
3A6833 |
HVLP Verification Kit, Instructions |
|
|
307263 |
Probe and Meter, Instructions |
|
|
308393 |
Gun Washer Kit, Instructions |
|
|
309227 |
Gun Flush Box Module, Instructions |
|
|
309455 |
Test Fixture, High Voltage Probe, and kV Meter, Instructions |
|
|
406999 |
Voltage Tester Conversion Kit, Instructions |
|
|
3A2494P |
7 |
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings. Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this manual where applicable.
WARNING
FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. Paint or solvent flowing through the equipment can cause static sparking. To help prevent fire, explosion, and electric shock:
• Electrostatic equipment must be used only by trained, qualified personnel who understand the requirements of this manual.
• Ground all equipment, personnel, object being sprayed, and conductive objects in or close to spray area. Resistance must not exceed 1 megohm. See Grounding instructions.
• Only use grounded Graco conductive air supply hoses.
• Do not use pail liners unless they are conductive and grounded.
• Stop operation immediately if static sparking occurs or you feel a shock. Do not use equipment until you identify and correct the problem.
•Check gun resistance, hose resistance, and electrical grounding daily.
•Use and clean equipment only in well ventilated area.
•Interlock the gun air and fluid supply to prevent operation unless ventilation air flow is above the minimum required value.
•Use only Group IIA or Group D materials.
•Use cleaning solvents with highest possible flash point when flushing or cleaning equipment.
•Never spray or flush solvent at high pressure.
•To clean the exterior of the equipment, cleaning solvents must have a flash point at least 15°
C or 59° F above ambient temperature. Non-ignitable fluids are preferred.
•Always turn the electrostatics off when flushing, cleaning or servicing equipment.
•Eliminate all ignition sources such as pilot lights, cigarettes, portable electric lamps, and plastic drop cloths (potential static sparking).
•Do not plug or unplug power cords or turn lights on or off when flammable fumes are present.
•Keep work area free of debris, including solvent, rags and gasoline.
•Keep the spray area clean at all times. Use non-sparking tools to clean residue from the booth and hangers.
•Keep a working fire extinguisher in the work area.
8 |
3A2494P |
Warnings
WARNING
PRESSURIZED EQUIPMENT HAZARD
Fluid from the equipment, leaks, or ruptured components can splash in the eyes or on skin and cause serious injury.
•Follow the Pressure Relief Procedure when you stop spraying/dispensing and before cleaning, checking, or servicing equipment.
•Tighten all fluid connections before operating the equipment.
•Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• |
Do not operate the unit when fatigued or under the influence of drugs or alcohol. |
• |
Do not exceed the maximum working pressure or temperature rating of the lowest rated |
|
system component. See Technical Specifications in all equipment manuals. |
• |
Use fluids and solvents that are compatible with equipment wetted parts. See Technical |
|
Specifications in all equipment manuals. Read fluid and solvent manufacturer’s warnings. |
|
For complete information about your material, request a Safety Data Sheet (SDS) from |
|
your distributor or retailer. |
•Do not leave the work area while equipment is energized or under pressure.
•Turn off all equipment and follow the PressureReliefProcedurewhen equipment is not in use.
•Check equipment daily. Repair or replace worn or damaged parts immediately with genuine manufacturer’s replacement parts only.
•Do not alter or modify equipment. Alterations or modifications may void agency approvals and create safety hazards.
•Make sure all equipment is rated and approved for the environment in which you are using it.
•Use equipment only for its intended purpose. Call your distributor for information.
•Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
•Do not kink or over bend hoses or use hoses to pull equipment.
•Keep children and animals away from work area.
•Comply with all applicable safety regulations.
PLASTIC PARTS CLEANING SOLVENT HAZARD
Many cleaning solvents can degrade plastic parts and cause them to fail, which could cause serious injury or property damage.
•Use only compatible solvents to clean plastic structural or pressure-containing parts.
•See Technical Specifications in all equipment manuals for materials of construction. Consult
the solvent manufacturer for information and recommendations about compatibility.
3A2494P |
9 |
Warnings
WARNING
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or swallowed.
•Read Safety Data Sheet (SDS) to know the specific hazards of the fluids you are using.
•Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury, including eye injury, hearing loss, inhalation of toxic fumes, and burns. This protective equipment includes but is not limited to:
•Protective eyewear, and hearing protection.
•Respirators, protective clothing, and gloves as recommended by the fluid and solvent manufacturer.
10 |
3A2494P |
Gun Overview
The air hose supplies air to the spray gun. Part of the air operates the alternator turbine and the rest of the air atomizes the fluid being sprayed. The alternator generates power, which is converted by the power cartridge to supply high voltage to the gun’s electrode.
The pump supplies fluid to the fluid hose and gun, where the fluid is electrostatically charged as it passes the electrode. The charged fluid is attracted to the grounded workpiece, wrapping around and evenly coating all surfaces.
3A2494P |
11 |
Gun Overview
The electrostatic gun includes the following controls, indicators, and components (see Fig. 1). For information on Smart guns, see Smart Guns, page 13.
Figure 1 |
Gun Overview |
|
Item |
Description |
Purpose |
|
|
|
A |
Air Swivel Inlet |
1/4 npsm(m) left-hand thread, for Graco grounded air supply hose. |
|
|
|
B |
Fluid Inlet |
3/8 npsm(m), for fluid supply hose. |
|
|
|
C |
Turbine Air |
Barbed fitting, for supplied exhaust tube. |
|
Exhaust |
|
D |
Air Cap and Nozzle |
Shapes the spray pattern. See Air Caps, page 82 and |
|
|
Fluid Nozzles, page 79 for available sizes. |
E |
Electrode Needle |
Supplies electrostatic charge to the fluid. See |
|
|
Electrode Selection Chart, page 88. |
F |
Fan Air Adjustment |
Adjusts fan size and shape. Can be used to decrease pattern length. |
|
Valve |
|
G |
Atomizing Air |
Restricts air cap air flow. Replace with plug (included) if desired. |
|
Restrictor Valve |
|
H |
Fluid Adjustment |
Adjusts fluid flow by limiting fluid needle travel. Use only in low flow |
|
Knob |
conditions, to reduce wear. |
J |
ES On-Off Valve |
Turns electrostatics ON (I) or OFF (O). |
|
|
|
K |
ES Indicator (stan- |
Lit when ES is ON (I). Color indicates alternator frequency. See the LED |
|
dard gun only; for |
indicator table in the Gun Setup Procedure, page 25. |
|
Smart gun indica- |
|
|
tor, see Operating |
|
|
Mode, page 13) |
|
12 |
3A2494P |
The Smart Gun module displays spraying voltage, current, alternator speed, and the voltage setting (low or high). It also allows the user to change to a lower spraying voltage. The module has two modes:
•Operating Mode
•Diagnostic Mode
Bar Graph
See Fig. 2 and Smart Gun Key, page 15. The Operating Mode displays gun data during normal spraying. The display uses a bar graph to show the voltage level in kiloVolts (kV) and the current level in microAmperes (uA). The bar graph range is from 0 to 100% for each value.
If the bar graph LEDs are blue, the gun is ready to spray. If the LEDs are yellow or red, the current is too high. The fluid may be too conductive, or see Electrical Troubleshooting, page 46 for other possible causes.
Hz Indicator
The Hz indicator functions the same as the ES indicator on standard guns. The indicator lights to show the alternator speed status, and has three colors:
•Green indicates the alternator speed is correct.
•If the indicator changes to amber after one second, increase the air pressure.
•If the indicator changes to red after one second, the air pressure is too high. Decrease air pressure until the indicator is green. To maintain a higher air pressure, install ES On/Off Valve Restrictor Kit 26A160. Then, adjust the pressure as needed to ensure the indicator remains green.
Gun Overview
Voltage Adjustment Switch
The voltage adjustment switch (VA) allows the operator to change from low to high voltage.
•The high voltage setting is determined by the maximum voltage of the gun and is not adjustable.
•The low voltage indicator (LO) lights when the switch is set to LO. The low voltage setting is user adjustable. See Adjusting the Low Voltage Setting, page 14.
NOTE:If the Error display appears, the Smart module has lost communication with the power supply. See Error Display, page 14, for further information.
Figure 2 Smart Gun Module in Operating Mode
3A2494P |
13 |
Gun Overview
If the Smart module loses communication with the power supply, the Error display appears, the Hz indicator turns red, and the Smart module is disabled. See Fig. 3 and Smart Gun Key, page 15. This can occur in Operating Mode or Diagnostic Mode. See Electrical Troubleshooting, page 46.
Communication must be restored to make the Smart module functional.
NOTE: It takes 8 seconds for the Error display to appear. If the gun has been disassembled, wait 8 seconds before spraying to ensure that an Error condition has not occurred.
NOTE: If there is no power to the gun, the Error display will not appear.
for your gun. Continue pressing the button until you reach the desired setting.
NOTE: After 2 seconds of inactivity the display will return to the Operating Screen.
NOTE: The low voltage setting may be locked. See Lock Symbol, page 14.
Figure 3 Error Display
The low voltage setting is user adjustable. To access the low voltage setting screen when in Operating Mode, press the LO SET button (LS) momentarily. The screen will display the current low voltage setting. See Fig. 4 and Smart Gun Key, page 15. The possible ranges are:
•85 kV guns: 40–85 kV
•60 kV guns: 30–60 kV
•40 kV guns: 20–40 kV
Set the Voltage Adjustment switch (VA) to LO. Press the LO SET button repeatedly to increase the setting in increments of 5. When the display reaches the maximum setting it will return to the minimum setting
Figure 4 Low Voltage Setting Screen (Unlocked)
The low voltage setting may be locked. When locked, an image (LK) appears on the screen. See Fig. 5 and Smart Gun Key, page 15.
•When in HI mode, the low voltage setting is always locked. The lock symbol will appear when the LO SET button is pressed.
•When in LO mode, the lock symbol will only appear if the lock is enabled. See Low Voltage Lock Screen, page 17, to lock or unlock the low voltage setting.
Figure 5 Low Voltage Setting Screen (Locked)
14 |
3A2494P |
Gun Overview
Table 1 Key for Figs. 2–9.
Item |
Description |
Purpose |
|
|
|
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|
VA |
Voltage Adjustment Switch |
Two-position switch sets Smart gun voltage to low setting (LO) or |
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|
|
high setting (HI). This switch is functional in Operating Mode and in |
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|
Diagnostic Mode. |
|
LO |
Low Voltage Mode |
Lights (blue) when the Smart gun is set to Low Voltage. |
|
|
Indicator |
|
|
kV |
Voltage (kV) Display |
Displays actual spraying voltage of the gun, in kV. In Operating Mode, |
|
|
|
display is a bar graph. In Diagnostic Mode, voltage is displayed as |
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|
|
a number. |
|
uA |
Current (uA) Display |
Displays actual spraying current of the gun, in uA. In Operating Mode, |
|
|
|
display is a bar graph. In Diagnostic Mode, current is displayed as |
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|
|
a number. |
|
LS |
LO SET button |
Press momentarily to enter the Low Voltage Setting screen. |
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|
|
Press and hold for approximately 5 seconds to enter or exit Diagnostic |
|
|
|
Mode. |
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|
While in Diagnostic Mode, press momentarily to advance through |
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screens. |
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|
While on the Low Voltage Lock Screen (in Diagnostic Mode), press |
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|
|
and hold to turn the lock on or off. |
|
LV |
Low Voltage Display |
Displays the low voltage setting as a number. The setting can be |
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|
|
changed. See Fig. 4. |
|
LK |
Low Voltage Locked |
Appears if the low voltage setting is locked. See Fig. 5 and Fig. 9. |
|
LD |
LO Display |
Appears on the Low Voltage Lock Screen. See Fig. 9. |
|
ER |
Error Display |
Appears if the Smart module loses communication with the power |
|
|
|
supply. See Fig. 3. |
|
VI |
Voltage Indicator |
In Diagnostic Mode, the two top right LEDs of the screen light, |
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|
|
indicating that the value displayed is in kV. See Fig. 6. |
|
CI |
Current Indicator |
In Diagnostic Mode, the two bottom right LEDs of the screen light, |
|
|
|
indicating that the value displayed is in uA. See Fig. 7. |
|
AS |
Alternator Speed Display |
In Diagnostic Mode, Hz level is displayed as a number. See Fig. 8. |
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Hz |
Alternator Speed Indicator |
In Operating Mode, indicator color varies to show the alternator speed |
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|
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status: |
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|
• |
Green indicates the alternator speed is at the correct level. |
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|
• |
If the indicator changes to amber after one second, the alternator |
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|
speed is too low. |
|
|
• If the indicator changes to red after one second, the alternator speed |
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|
is too high. The indicator also turns red if the Error display appears. |
|
|
In Diagnostic Mode, the indicator is green when in the Alternator |
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|
Speed (Hertz) screen. |
3A2494P |
15 |
Gun Overview
Diagnostic Mode includes four screens which display gun data:
•Voltage (kiloVolts) Screen
•Current (microAmperes) Screen
•Alternator Speed (Hertz) Screen
•Low Voltage Lock Screen
NOTE: You must be in Operating Mode to adjust the low voltage setting; the setting is not adjustable in Diagnostic Mode. However, the voltage adjustment switch (VA) can be set to HI or LO in Operating Mode and in Diagnostic Mode.
ToenterDiagnosticMode, pressandholdtheLOSET (LS) button for approximately 5 seconds. The display will go to the Voltage (kiloVolts) Screen, page 16.
To advance to the next screen, press the LO SET button again.
To exit Diagnostic Mode, press and hold the LO SET button for approximately 5 seconds. The screen will return to Operating Mode.
NOTE: If the gun is detriggered while in Diagnostic Mode, the last screen viewed will be displayed when the gun is retriggered.
NOTE: Diagnostic Mode cannot be exited from the Low Voltage Lock Screen. See Low Voltage Lock Screen, page 17 for details.
Voltage (kiloVolts) Screen
The Voltage (kiloVolts) Screen is the first screen to appear after entering Diagnostic Mode. See Fig. 6 and Smart Gun Key, page 15. To enter this screen, press and hold the LO SET button for approximately 5 seconds while in the Operating Mode.
This screen displays the spraying voltage of the gun as a number (kV), rounded to the nearest 5 kV. The two top right LEDs (VI) of the display panel light, indicating that the Voltage (kiloVolts) Screen is displayed. The display is a readout and cannot be changed.
Press the LO SET button to advance to the Current (microAmperes) Screen, page 16. Press and hold for approximately 5 seconds to return to Operating Mode.
Figure 6 Voltage (kiloVolts) Screen
Current (microAmperes) Screen
The Current (microAmperes) Screen is the second screen in the Diagnostic Mode. See Fig. 7 and Smart Gun Key, page 15. To enter this screen, press the LO SET button while in the Voltage (kiloVolts) Screen.
This screen displays the spraying current of the gun as a number (uA), rounded to the nearest 5 uA. The two bottom right LEDs (CI) of the display panel light, indicating that the Current (microAmperes) Screen is displayed. The display is a readout and cannot be changed.
Press the LO SET button to advance to the Alternator Speed (Hertz) Screen, page 17. Press and hold for approximately 5 seconds to return to Operating Mode.
Figure 7 Current (microAmperes) Screen
16 |
3A2494P |
Gun Overview
Alternator Speed (Hertz) Screen |
Low Voltage Lock Screen |
The Alternator Speed (Hertz) Screen is the third screen in the Diagnostic Mode. See Fig. 8 and Smart Gun Key, page 15. To enter this screen, press the LO SET button while in the Current (microAmperes) Screen.
This screen displays the alternator speed as a 3 digit number (AS), rounded to the nearest 10 Hz. The display is a readout and cannot be changed. If the alternator speed is greater than 999 Hz, the display will show 999.
The Hz indicator lights green to show that you are viewing the Alternator Speed (Hertz) Screen.
Press the LO SET button to advance to the
Low Voltage Lock Screen, page 17. Press and hold for approximately 5 seconds to return to Operating Mode.
Figure 8 Alternator Speed (Hertz) Screen
The Low Voltage Lock Screen is the fourth screen in the Diagnostic Mode. See Fig. 9 and Smart Gun Key, page 15. To enter this screen, press the LO SET button while in the Alternator Speed (Hertz) Screen.
This screen displays the status of the Low Voltage Lock. If the setting is locked, the lock image (LK) appears to the left of the Lo display (LD). If the setting is unlocked, the lock image does not appear.
To change the lock status, press and hold the LO SET button until the lock image appears or disappears. If the lock is set, the image will also appear on the Low Voltage Setting Screen when in low voltage mode (see Fig. 4).
NOTE: Diagnostic Mode cannot be exited from this screen, because pressing and holding the LO SET button is used to turn the lock on or off. To exit, press LO SET momentarily to return to the Voltage (kiloVolts) Screen, then exit Diagnostic Mode from there.
Figure 9 Low Voltage Lock Screen
3A2494P |
17 |
Installation
Installing and servicing this equipment requires access to parts which may cause electric shock or other serious injury if work is not performed properly.
•Do not install or service this equipment unless you are trained and qualified.
•Be sure your installation complies with local, state, and national codes for the installation of electrical apparatus in a Class I, Div. I, hazardous location or a Group II, Zone I explosive atmosphere location.
•Comply with all local codes and regulations.
Fig. 10 (Typical Installation) shows a typical electrostatic air spray system. It is not an actual system design. For assistance in designing a system to suit your particular needs, contact your Graco distributor.
Mount warning signs in the spray area where they can easily be seen and read by all operators. An English Warning Sign is provided with the gun.
Do not operate the gun unless ventilating air flow is above the minimum required value. Provide fresh air ventilation to avoid the buildup of flammable or toxic vapors when spraying, flushing, or cleaning the gun. Interlock the gun air and fluid supply
to prevent operation unless ventilating air flow is above the minimum required value.
The spray booth must have a ventilation system.
Electrically interlock the gun air and fluid supply with the ventilators to prevent gun operation any time that the ventilation air flow falls below minimum values. Check and follow all local codes and regulations regarding air exhaust velocity requirements. Verify the operation of the interlock at least once a year.
NOTE: The minimum allowable air exhaust velocity is 60 feet/minute (19 linear meters/minute). High-velocity air exhaust will decrease the operating efficiency of the electrostatic system.
18 |
3A2494P |
Installation
Air Supply Line |
Fluid Supply Line |
To reduce the risk of electric shock, the air supply hose must be electrically connected to a true earth ground. Use only Graco Grounded Air Supply
Hose.
1.See Fig. 10. Use the Graco Grounded Air Supply Hose (AH) to supply air to the gun. The gun air inlet fitting has a left-hand thread. The air supply hose ground wire (AG) must be connected to a true earth ground. Do not connect the air supply hose to the gun air inlet yet.
2.Install an air line filter/water separator (AF) on the gun air line to ensure a dry, clean air supply to the gun. Dirt and moisture can ruin the appearance of your finished workpiece and can cause the gun to malfunction.
3.Install bleed-type air regulators (PR, GR) on the pump and gun air supply lines to control air pressure to the pump and gun.
Trapped air can cause the pump to cycle unexpectedly, which can result in serious injury, including splashing fluid in the eyes or on the skin. Do not operate the equipment without the bleed-type air valve (BV) installed.
4.Install a bleed-type air valve (BV) on the pump air supply line. The bleed-type air valve (BV) is required in your system to shut off air to the pump and relieve air trapped between the valve and the pump after the air regulator is shut off. Install an additional bleed-type air valve on the main air line (MA) to isolate the accessories for servicing.
5.Install an air bleed valve (BV) on each gun air supply line to shut off air to the gun(s) and relieve air trapped between the valve and the gun after the air regulator is shut off.
1.Blow out the fluid line (FL) with air and flush it with solvent. Use solvent which is compatible with the fluid to be sprayed. Do not connect the fluid supply line to the gun fluid inlet yet.
2.Install a fluid regulator (FR) on the fluid line to control fluid pressure to the gun.
3.Install a fluid filter (FF) near the pump outlet, to remove particles and sediment which could clog the spray nozzle.
To reduce the risk of serious injury, including splashing fluid in the eyes or on the skin, do not operate equipment without the fluid drain valve (FD) installed.
4.The fluid drain valve (FD) is required in your system to assist in relieving fluid pressure in the displacement pump, hose, and gun. Triggering the gun to relieve pressure may not be sufficient. Install a drain valve close to the pump's fluid outlet.
3A2494P |
19 |
Installation
NON-HAZARDOUS LOCATION |
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HAZARDOUS LOCATION |
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Figure 10 Typical Installation
Typical Installation Key
Item |
Description |
AD |
Air Line Drain Valve |
AF |
Air Filter/Water Separator |
AG* |
Gun Air Hose Ground Wire |
AH* |
Graco Grounded Air Hose (left-hand |
|
threads) |
AL |
Pump Air Line Lubricator |
|
|
BV* |
Pump Bleed-Type Air Shutoff Valve |
|
|
EG |
Electrostatic Air Spray Gun |
|
|
FD* |
Fluid Drain Valve |
|
|
FF |
Fluid Filter |
|
|
FL |
Fluid Supply Line |
|
|
FR |
Fluid Pressure Regulator |
|
|
Item |
Description |
FV |
Fluid Shutoff Valve |
GR |
Gun Air Pressure Regulator |
MA |
Main Air Supply Line |
PG* |
Pump Ground Wire |
PR |
Pump Air Pressure Regulator |
SP |
Supply Pump |
SV* |
Ventilation Fan Interlock Solenoid Valve. |
|
NOTE: The solenoid valve is not offered |
|
as a Graco accessory. |
* These items are required for safe operation. They must be purchased separately.
20 |
3A2494P |
The equipment must be grounded to reduce the risk of static sparking and electric shock. Electric or static sparking can cause fumes to ignite or explode. Improper grounding can cause electric shock. Ground all equipment, personnel, objects being sprayed, and conductive objects in or close to the spray area. The resistance must not exceed 1 megohm. Grounding provides an escape wire for the electric current.
When operating the electrostatic gun, any ungrounded objects (such as people, containers, and tools) in the spray location can become electrically charged.
The following are minimum grounding requirements for a basic electrostatic system. Your system may include other equipment or objects which must be grounded. Your system must be connected to a true earth ground. Check ground connections daily. Check your local electrical codes and regulations for detailed grounding instructions.
•All persons entering the spray area must wear shoes having conductive soles such as leather, or wear personal grounding straps. Do not wear shoes with non-conductive soles such as rubber or plastic. If gloves are necessary, wear the conductive gloves supplied with the gun. If non-Graco gloves are worn, cut off fingers or palm area of gloves to ensure your hand contacts the grounded gun handle. Conductive gloves and footwear must not exceed 100 megohm per EN ISO 20344, EN 1149–5.
•Object being sprayed: Keep the workpiece hangers clean and grounded at all times.
Installation
•Electrostatic Air Spray Gun: Ground the gun by connecting the Graco Grounded Air Hose (AH) to the gun, and connecting the air hose ground wire to a true earth ground. See Check Gun Electrical Grounding, page 34.
•Pump/fluid source: Ground the pump/fluid source by connecting its ground wire to a true earth ground.
•All electrically conductive objects or devices in the spray area must be properly grounded.
•Fluid and waste containers: Ground all fluid and waste containers in the spray area. Do not use pail liners unless they are conductive and grounded. When flushing the spray gun, the container used to catch the excess fluid must be electrically conductive and grounded.
•Air compressors: Ground the equipment according to the manufacturer's recommendations.
•All air and fluid lines must be properly grounded. Use only grounded hoses with a maximum of 100 feet (30.5 m) combined hose length to ensure grounding continuity.
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21 |
Installation
•The floor of the spray area must be electrically conductive and grounded. Do not cover the floor with cardboard or any non-conductive material which would interrupt grounding continuity.
•Flammable liquids in the spray area must be kept in approved, grounded containers. Do not use plastic containers. Do not store more than the quantity needed for one shift.
•All solvent pails: Use only approved, grounded metal containers, which are conductive. Do not use plastic containers. Use only non-flammable solvents. Do not store more than the quantity needed for one shift.
22 |
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Installation
Figure 11 Ground the Operator |
Operator is grounded through bare skin contact with |
|
the gun handle and conductive shoes. A conductive |
|
glove can also be used. |
Figure 12 Ground the Object Being Sprayed |
Object being sprayed is grounded through contact |
|
with the hanger and conveyor system. |
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23 |
Installation
Figure 13 Ground the Gun |
Gun is grounded through the conductive air hose. |
Figure 14 Ground the Fluid Supply |
Fluid supply line and source must be grounded. |
24 |
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For additional steps to set up specialty guns, see Soft Spray Gun Setup Procedure, page 28, Round Spray Gun Setup Procedure, page 31, HVLP Gun Setup Procedure, page 29, and Abrasive Material Gun Setup Procedure, page 33.
See the figure below to locate the electrostatic gun controls.
Figure 15 Electrostatic Gun Controls
1.The gun is shipped with the fluid nozzle and air cap installed. Check that the retaining ring is tight.
NOTE: To select a different size fluid nozzle or air cap, see
Fluid Nozzle Selection Chart, page 79 and Air Cap Selection Guide, page 82.
To install the nozzle and air cap, see Air Cap and Nozzle Replacement, page 48.
2.Turn OFF (O) the ES On-Off switch (J).
3. Shut off the air bleed valve to the gun.
Gun Setup
4.Check gun resistance. Follow the steps in Test Gun Resistance, page 42.
5.Connect the Graco grounded air hose to the gun air inlet. The gun air inlet fitting has left-hand threads.
6.Follow all steps in Grounding, page 21.
7.Follow all steps in
Check Gun Electrical Grounding, page 34. Reading must be less than 1 megohm.
8.Verify that the material resistivity meets requirements for electrostatic spray. See Check Fluid Resistivity, page 35.
9.Connect the exhaust tube and secure with the clamp provided.
10.Connect the fluid hose to the gun fluid inlet.
11.Flush if needed. See Flushing, page 38.
12.Position the air cap as needed.
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25 |
Gun Setup
13.Fully open the fan air adjustment valve (F) counterclockwise.
14.Fully open the fluid adjustment valve (H) counterclockwise.
15.Fully open the atomizing air restrictor valve (G) clockwise.
16. Turn ON (I) the ES On-Off switch (J).
17.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 2 . Pressure Drop
Air |
Hose |
Air Regulator Setting |
|
Length in ft (m) |
in psi (MPa, bar) |
||
using 5/16 inch (8 |
with gun triggered |
||
mm) diameter hose |
|
|
|
15 |
(4.6) |
55 |
(0.38, 3.8) |
|
|
|
|
25 |
(7.6) |
65 |
(0.45, 4.5) |
|
|
|
|
50 (15.3) |
80 |
(0.56, 5.6) |
|
|
|
|
|
18.Verify that the ES indicator (K) [Hz indicator on Smart guns] is lit.
Table 3 . 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 one second, the air pressure |
|
is too low. Increase air pressure |
|
until the indicator is green. |
Red |
If the indicator changes to red |
|
after one second, the air pressure |
|
is too high. Decrease air pressure |
|
until the indicator is green. To |
|
maintain a higher application air |
|
pressure, install ES On/Off Valve |
|
Restrictor Kit 26A160. Adjust the |
|
pressure as needed to ensure the |
|
indicator remains green. |
26 |
3A2494P |
19.Shut off the air to the gun. Turn OFF (O) the ES On-Off switch (J).
20.Start the pump. Adjust the fluid regulator until the stream from the gun travels 8-12 in. (200-300 mm) before falling off. Typically, if fluid pressure is below 5 psi (.04 MPa, 0.4 bar) or above 30 psi (0.21 MPa, 2.1 bar), a change of nozzle size is recommended.
21.Turn on the air to the gun. Turn ON (I) the ES On-Off switch (J).
Gun Setup
22.Spray a test pattern. Check the atomization.
•If over-atomization occurs at minimum pressure, adjust the atomizing air restrictor valve.
•If atomization is inadequate, increase air pressure or decrease fluid flow.
23.Adjust the fan air adjustment valve.
•Fully open the fan air adjustment valve, counterclockwise, for the longest pattern.
•Turn the valve clockwise to restrict the fan air and create a shorter pattern.
24.Spray a test piece. Examine the edges for coverage. If wrap is poor, see Troubleshooting, page 44.
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27 |
Gun Setup
To achieve a soft spray pattern for small or lightweight parts, do the following:
1.Select a soft spray gun model. See Soft Spray Gun Models, page 5 .
•To convert a gun for soft spray, install a soft spray air cap. See Air Cap Selection Guide, page 82.
•For best results, install a 1.0 mm or 1.2 mm nozzle. See
Fluid Nozzle Selection Chart, page 79.
2.Follow steps 1–14 in the Gun Setup Procedure, page 25.
3.Adjust the atomizing air. Fully close the atomizing air restrictor valve (G) counterclockwise. Then, open the atomizing air restrictor valve (G) one half turn to one turn.
4. Turn ON (I) the ES On-Off switch (J).
5.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 4 . Pressure Drop
Air |
Hose |
Air Regulator Setting |
|
Length in ft (m) |
in psi (MPa, bar) |
||
using 5/16 inch (8 |
with gun triggered |
||
mm) diameter hose |
|
|
|
15 |
(4.6) |
55 |
(0.38, 3.8) |
|
|
|
|
25 |
(7.6) |
65 |
(0.45, 4.5) |
|
|
|
|
50 (15.3) |
80 |
(0.56, 5.6) |
|
|
|
|
|
6.Verify that the ES indicator (K) [Hz indicator on Smart guns] is lit.
Table 5 . 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 one second, the air pressure |
|
is too low. Increase air pressure |
|
until the indicator is green. |
Red |
If the indicator changes to red |
|
after one second, the air pressure |
|
is too high. Decrease air pressure |
|
until the indicator is green. To |
|
maintain a higher application air |
|
pressure, install ES On/Off Valve |
|
Restrictor Kit 26A160. Adjust the |
|
pressure as needed to ensure the |
|
indicator remains green. |
7.Continue with steps 19–24 in the Gun Setup Procedure, page 25.
NOTE: The soft spray air cap is optimized for a production rate of 3.5 oz/min (100 cc/min). For best soft spray results, limit the production rate to 7 oz/min (200 cc/min) or less.
NOTE: If the object being sprayed is moving too much, adjust the atomizing air restrictor valve
(G) counterclockwise slightly to limit the air flow. To improve atomization, adjust the atomizing air restrictor valve (G) clockwise slightly to increase the air flow or decrease the fluid flow.
28 |
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Most air quality authorities accept electrostatic spraying as the most efficient process and a means to comply with environmental regulation. Follow the Gun Setup Procedure, page 25when spraying electrostatically with an HVLP aircap.
When electrostatic spraying cannot be effectively used on certain parts or materials, an HVLP gun can be used to comply with environmental regulations in most areas. To be in compliance the air pressures at the aircap must be less than 10 psi. Follow
the procedure below to set up the spray gun for non-electrostatic HVLP operation.
1.Select an HVLP gun model. See HVLP Gun Models, page 6 .
To convert a gun for HVLP, install an HVLP air cap. See Air Cap Selection Guide, page 82.
2.Follow steps 1–12 in the Gun Setup Procedure, page 25.
3.Fully open the fluid adjustment valve (H) counterclockwise.
4.Adjust the air in the air cap.
a.Fully open the fan air adjustment valve (F) counterclockwise.
Gun Setup
b.Fully open the atomizing air restrictor valve
(G) clockwise.
c.Turn OFF(I) the ES On-Off switch (J).
d.Set the gun air regulator to deliver 30 psi (0.21 MPa, 2.1 bar) at the gun when triggered.
Table 6 Pressure Drop
Air Hose Length |
Air Regulator |
||
in ft (m) using |
Setting in psi |
||
5/16 inch (8 mm) |
(MPa, bar) with |
||
diameter hose |
gun triggered |
||
15 |
(4.6) |
43 (0.29, 3) |
|
25 |
(7.6) |
50 |
(0.34, 3.4) |
50 (15.3) |
70 |
(0.48, 4.8) |
5. Shut off the air to the gun.
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29 |