For the models PILOT WA 7XX the spray jet contour (flat/wide/round) is adjusted by
a pressure regulator in the plant.
Closing of the 3/2-way valve is followed by the control air escaping from the cylinder
inside the gun, upon which the spring-loaded material needle returns to its iinitial
position, where it shuts the material and atomizing air input off.
The material flow volume is set with all models via the material pressure and by limit-
ing the orifice travel of the material needle on the cap (item 25).
The material flow of the automatic spray gun series PILOT WA 7XX can also be
opened by hand using the pulling rod (item 26) to clean, for example, a clogged
material nozzle. The spray guns of the PILOT WA 7XX series can be connected to
material pressure tanks and pumping systems.
The models PILOT WA 715-U / WA 735-HVLP-U / WA 755-HVLP
PLUS
-U /
WA 718-U-K and WA 738-HVLP-U-K with connection for paint circulation can be
integrated into a system with circulation.
The models PILOT WA 725-HVLP / WA 735 HVLP-U / WA 728 HVLP-K and
WA 738 HVLP-U-K are pure low-pressure spray guns working with a spraying air
pressure of 0.7 bar at an intake air pressure of 4.5 bar.
With the models PILOT WA 745-HVLP
PLUS
and WA 755 HVLP
PLUS
-U
the intake air pressure ranges from 3.0 to 3.3 bar for a spraying air pressure from
1.2 to 1.4 bar.
3
Safety Warnings
3.1
Safety Warning Symbols
Warning
This pictograph and the accompanying warning note
„Warning“
indicate possible
risks and dangers for yourself.
Possible consequences: Injuries of any kind.
Caution
This pictograph and the accompanying warning note
„Caution“
indicate possible
damage to equipment.
Possible consequences: Damage to equipment, workpieces, etc.
Notice
This pictograph and the accompanying note
„Notice“
indicate additional and useful
information to help you handling the spray gun with even greater confidence and
efficiency.
4
5
3.2
Generally Applicable Safety Precautions
► All applicable accident prevention rules and regulations as well as other
recognised industrial safety and health rules and regulations must be observed
at all times.
► Use the spray gun only in well-ventilated rooms. Fire, naked flames and smoking
are strictly prohibited within the working area. WARNING – during the spraying
of flammable materials (e.g. lacquers, adhesives, cleaning agents, etc.), there is
an increased risk to health as well as an increased risk of explosion and fire.
► You must ensure that the spray gun is properly earthed (grounded) either
separately or in connection with the equipment with which it is being used
(max. resistance 106 Ω).
► Before carrying out maintenance or servicing work, always ensure that the air
and material feed to the spray gun have been de-pressurised. Risk of injury!
► When spraying materials, do not place your hands or other parts of the body in
front of the pressurised nozzle or the spray gun.
Risk of injury!
► Never point the spray gun at persons or animals. Risk of injury!
► Always observe the spraying and safety instructions given by the manufacturers
of the spraying material and the cleaning agent. Aggressive and corrosive
materials in particular can be harmful to health.
► Always wear hearing protection when using the gun or when in the vicinity of a
gun that is in use. The noise level generated by the spray gun is
approx. 86 dB(A).
► Exhaust air containing particles (overspray) must be kept away from the working
area and personnel. In spite of these measures, always wear the regulation
breathing masks and protective overalls when using the gun. Airborne particles
represent a serious health hazard!
► After carrying out assembly or maintenance work, always ensure that all nuts,
bolts and screw connections have been fully tightened before the gun is used.
► Use only original replacement parts, since WALTHER can only guarantee safe
and fault-free operation for original parts.
► For further information on the safe use of the spray gun and the spraying
materials, please contact WALTHER Spritz- und Lackiersysteme GmbH,
D-42327 Wuppertal, Germany.
