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Binks AA-4000-000-10HP [4/8] General troubleshooting
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4
TROUBLESHOOTING DEFECTIVE SPRAY PATTERNS
The following procedure summarizes the steps that an
operator must immediately take when the first signs of a
defective spray pattern emerge.
1. Check the external portion of the fluid tip for material
buildup. If buildup has occurred, secure the gun trig-
ger safety switch and clean the gun fluid tip with a
non-metal soft brush.
2. If the spray pattern exhibits signs of tails at the top or
bottom ends of the pattern, increase the air pressure
gradually until the tails disappear.
3. If increasing air pressure does not dissipate the tails,
the fluid tip may be worn and may need to be
replaced. Another sign of the need to replace a worn
tip is a gradual decline in spraying pattern width.
4. If cleaning or replacing the fluid tip does not dissipate
the tails; the spraying defect is most likely due to the
material temperature and/or viscosity.
5. If pattern pulsation or blinking occurs, check the pres-
sure regulators, all downstream regulators, and the
pump. These may require further adjustment or even
repairs.
Figure 3
Correct
Pattern
Tails
Hour
Glass
Distorted
Pattern
PROBLEM CAUSE ACTION
Fluid leaking from the back Worn seal or needle shaft. Replace needle packing cartridge (8).
of seal cartridge assembly (8)
Fluid leaking from the front Needle ball worn or damaged. Replace needle packing cartridge (8).
of the gun
Worn seat assembly. Replace fluid seat (4).
Fluid in air passages Spray tip seal leaking. Tighten retaining ring (1)
Replace carbide tip assembly (3).
Leaking around fluid seat. Tighten or replace fluid seat (4).
Slow fluid shut off Fluid buildup on cartridge assembly. Clean or replace cartridge assembly (8).
No fluid output when triggered Tip orifice plugged. Turn off fluid supply. Relieve pressure into a
closed-grounded container.
Engage trigger safety.
Remove tip guard assembly (1) and air cap (2)
and the carbide tip (3).
Clean or replace carbide tip assembly (3).
Collet on needle has slipped. Turn off fluid supply. Relieve pressure into a
closed-grounded container.
Remove trigger (20). Remove needle packing
cartridge (8). Loosen collet and move until
the needle is flush with the rear of the collet.
Tighten collet.
Fluid filter or fluid hose plugged. Turn off fluid supply. Relieve pressure into a
closed-grounded container. Turn off air supply
to pump and relieve fluid pressure with bypass
valve. Engage trigger safety. Very slowly loosen
the hose connection at the gun to relieve any
pressure in hose. Remove hose and clear
obstruction.
GENERAL TROUBLESHOOTING
IMPORTANT REGULATORY NOTE
The AA-4000 Air-Assisted H.V.L.P. hand spray gun combines the proven efficiency of the Binks compliant spray guns with
air-assisted atomization to yield a reliable, carefully engineered compliant spray gun. With 25' of 5/16" I.D. air hose and
regulator set at only 20 p.s.i. the compliant air cap registers 10 p.s.i. of atomization air to shape and soften the spray
pattern. The AA-4000 air-assisted H.V.L.P. gun operates at high transfer efficiencies and fully complies with all govern-
ment regulations for H.V.L.P. spray guns.
Max. Fluid Input: 4000 p.s.i.
Max. static air pressure at regulator with 25' of hose to inlet: 20 p.s.i.
Max. Dynamic Gun Inlet Air Pressure: 15 p.s.i.
Gun Body: Forged Aluminum Alloy
Fluid Path: Stainless Steel and Tungsten Carbide
Содержание
- Aa4000 air assisted airless spray gun 1
- Ii 2 g x 1
- In the aa4000 spray gun the paint or other material to be sprayed is preatom ized and forced through the carbide tip by the typical 1 500 3 800 psi fluid pressure with capabilities up to 4 000 psi 275 bar as a result of the preatom izing the final shaping air supplied by the air cap produces an exceptionally fine and even spray pattern the result of this spray pattern is an even finish that lends itself to products that need an exceptionally fine finish with reduced overspray and voc emissions 1
- Specifications 1
- The following instructions provide the necessary information for the proper operation and preventive maintenance of the binks aa4000 air assisted airless spray gun please read and understand all information in this document in order to get the maximum performance from your new aa4000 spray gun 1
- Caution 2
- The spray gun models listed in the following declaration of conformity may be used in some potentially explosive atmospheres only when the special conditions for safe installation and operation have been followed as expressed in this user manual part sheet these models are approved to atex regulations 94 9 ec protection level ii 2 g x suitable for use in zones 1 and 2 2
- Warning 2
- Fluid hoses 3
- Fluid tip selection 3
- Spray gun set up 3
- Typical hook up 3
- Distorted pattern 4
- Figure 3 correct pattern 4
- General troubleshooting 4
- Hour glass 4
- If cleaning or replacing the fluid tip does not dissipate the tails the spraying defect is most likely due to the material temperature and or viscosity 5 if pattern pulsation or blinking occurs check the pres sure regulators all downstream regulators and the pump these may require further adjustment or even repairs 4
- Important regulatory note 4
- Problem cause action 4
- The following procedure summarizes the steps that an operator must immediately take when the first signs of a defective spray pattern emerge 1 check the external portion of the fluid tip for material buildup if buildup has occurred secure the gun trig ger safety switch and clean the gun fluid tip with a non metal soft brush 2 if the spray pattern exhibits signs of tails at the top or bottom ends of the pattern increase the air pressure gradually until the tails disappear 3 if increasing air pressure does not dissipate the tails the fluid tip may be worn and may need to be replaced another sign of the need to replace a worn tip is a gradual decline in spraying pattern width 4
- Troubleshooting defective spray patterns 4
- Air assisted airless spray gun maintenance and cleaning 5
- Caution 5
- Cleaning 5
- Fluid tip 5
- Lubrication 5
- Spray pattern troubleshooting 5
- Warning 5
- Air valve replacement 6
- Cleaning 6
- Clearly labeled as approved for cleaning and wash off operations if the operator has any question on selecting appropriate cleaning solvents the operator should consult a supervisor or plant environmental staff 6
- Continued 6
- Engage the trigger safety 2 shut off fluid pump and disconnect its air or power supply 3 release pressure from the entire fluid system from the pump to the spray gun 6
- Parts list 6
- Refer to assembly drawing on page 7 to locate numbered items 1 engage the trigger safety 2 shut off fluid pump and disconnect its air or power supply 3 release pressure from the entire fluid system from the pump to the spray gun 4 remove tip guard assembly 1 air cap 2 and spray tip 3 remove trigger 20 by removing the trigger stud 13 and the trigger screw 12 6
- Remove the aa4000 needle packing cartridge 8 6 carefully install new aa4000 needle packing cartridge 8 7 remove fluid seat 4 and o ring 8 install new fluid seat 4 and o ring 9 reinstall trigger 20 trigger stud 13 and trigger screw 12 10 reinstall air cap 2 spray tip 3 and tip guard assembly 1 6
- Remove trigger 20 by removing the trigger stud 13 and the trigger screw 12 5 remove air valve assembly 21 6 replace air valve assembly 21 7 reinstall trigger 20 trigger stud 13 and trigger screw 12 6
- Using a rag dampened with solvent wipe the exteri or surface of the gun additionally some solvents are prohibited from being used for cleaning the opera tor must take care to use only approved cleaning sol vents for equipment cleaning these materials are 6
- Wire and ball assembly and seat replacement 6
- Aa4000 air assisted airless spray gun 7
- Aa2 optional 54 4980 thin to medium materials 8
- Aa4 standard 54 4978 medium to hvy materials 8
- Accessories 8
- Air cap application chart 8
- Application chart 8
- Binks worldwide sales and service listing www binks com 8
- Cleaning kit 8
- Fittings 8
- Fluid filters 8
- Fluid regulators 8
- Fluid seat application chart 8
- How to order the aa 4000 air assisted airless spray gun 8
- Industrial finishing 8
- Repair kit 54 4993 8
- Replacement filters 8
- Spray tip selection charts 8
- Test gauges 54 4997 8
- Warranty 8
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