37
36
2
Technical Description
The models of the PILOT WA 800-version are automatic air-controlled guns operating
in combination with a 3/2-way control valve. Hand, foot or an electrical pulse (sensor
etc.) can be used.
With internal control:
Actuation of the 3/2-way control valve directs control air into the cylinder inside the
gun so as to open - in sequence - the atomizing air and the material input.
The spray jet contour (flat/wide/round) are adjusted for the models PILOT WA 800 /
PILOT WA 810-U / WA 820-HVLP / WA 830-HVLP-U / WA 840-MP / WA 850-MP-U /
PILOT WA 870-K / WA 871-K-U / WA 872-HVLP-K and WA 873-HVLP-K-U at the gun
by way of regulating screws.
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 initial
position, where it shuts the material and atomizing air input off.
Without internal control:
At first the atomizing air (round- and wide/flat jet air pos. 27) is openened by a 3/2-way
control valve. Then activate the control air that push back the piston and the material
needle to open the material supply. For the models PILOT WA 805 / WA 815-U /
WA 825-HVLP / WA 835-HVLP-U / WA 845-MP and WA 855-MP-U the spray jet con-
tour (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 rate is adjusted for all models at the gun by the cap (pos. 23).
The material inlet duct of PILOT WA 800-models can be opened manually so as to
permit, for example, cleaning of a clogged material nozzle.
The spray guns PILOT WA 800-models can be connected to material pressure tanks
and pumping systems.
The models PILOT PILOT WA 810-U / WA 815-U / WA 830-HVLP-U /
WA 835-HVLP-U / WA 850-MP-U / WA 855-MP-U / WA 871-K-U and
WA 873-HVLP-K-U permit connection to circulation systems.
The models PILOT WA 820-HVLP bis WA 835-HVLP-U / WA 872 HVLP-K and
WA 873 HVLP -K-U are solely low-pressure spray guns and operate with a atomizing
air pressure of 0.7 bar using an air input pressure of 4.5 bar.
For the models PILOT WA 840-MP to WA 855-MP-U the air input pressure is from 3.0
to 3.3 bar for a spraying air of 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.
3.2
Generally Applicable Safety Precautions
•
All applicable accident prevention rules and regulations as well as other recog-
nised 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 smo-
king 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 explo-
sion and fire.
•
You must ensure that the spray gun is properly earthed (grounded) either sepa-
rately or in connection with the equipment with which it is being used (max.
resistance 10
6
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 mate-
rials in particular can be harmful to health.
•
Exhaust air containing particles (overspray) must be kept away from the wor-
king area and personnel. In spite of these measures, always wear the regulati-
on breathing masks and protective overalls when using the gun. Airborne parti-
cles represent a serious health hazard!
•
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).
•
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 mate-
rials, please contact WALTHER Spritz- und Lackiersysteme GmbH, D-42327
Wuppertal, Germany.
