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The technical data indicated on the equipment rating plates and the specifications
in the chapter "Technical Data" must be complied with at all times and must not be
exceeded. An overloading of the equipment must be ruled out.
The equipment may be used in potentially explosive atmospheres only with the
authorisation of the relevant supervisory authority.
The relevant supervisory authority or the operator of the equipment are
responsible for determining the explosion hazard (zone classification).
The operator must check and ensure that all technical data and the marking of the
equipment in accordance with ATEX are compliant with the necessary require-
ments.
The operator must provide corresponding safety measures for all applications in
which the breakdown of the equipment might lead to danger to persons.
If any irregularities are observed while the equipment is in operation, the equipment
must be put out of operation immediately and WALTHER Spritz- und
Lackiersysteme must be consulted.
Grounding / Equipotential Bonding
You must ensure that the spray gun is properly earthed (grounded) either separate-
ly or in connection with the equipment with which it is being used (maximum resi-
stance 10
6
Ω
).
1.3
Improper Use
This spray gun shall not be used for purposes other than set forth in the above
Chapter
Normal Use
. Any other form of use and/or application is prohibited.
Improper use is for example:
•
spraying of material onto persons and animals
•
spraying of liquid nitrogen, etc.
2
Technical Description
The spray guns of the series PILOT WA 500 are all automatic air-controlled guns
operating in combination with a 3/2-way control valve.
Hand, foot or solenoid-actuated valves can be used.
Actuation of the 3/2-way valve directs control air into the cylinder inside the gun so
as to open - in sequence - the atomizing air and the material input.
Closing of the 3/2-way valve is followed by the control air escaping from the cylin-
der inside the gun, upon which the spring-loaded material control needle returns to
its initial position, where it shuts the material and atomizing air input off.
The material flow rate and the spray jet contour (flat / wide / round) are adjusted at
the gun by way of regulating screws.
The material inlet duct of the series PILOT WA 500 can be opened manually so as
to permit, for example, cleaning of a clogged material outlet nozzle.
The models PILOT WA 510/571-K and WA 530/573-K permit connection to circulati-
on systems. Thus, several spray guns can be supplied with spraying material
through the closed loop layout at the same timeThe spray guns PILOT WA 500/570-
K and WA 520/572-K can be connected to material pressure tanks and pumping
systems.
The models PILOT WA 520/572-K and WA 530/573-K are solely HVLP spray guns
and operate with a spraying pressure of 0.7 bar using an inlet pressure of 4.5 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
It is important that all applicable accident prevention directives as well as industrial
safety and health rules and regulations are duly complied with.
Use this spray gun in well ventilated rooms. Open fires, naked lights and smoking
are prohibited in the working area. Spraying of readily flammable media such as
paints, lacquers, cleaning agents, etc., causes a potential health, explosion and fire
risk.
You must ensure that the spray gun is properly earthed (grounded) either separate-
ly or in connection with the equipment with which it is being used (maximum resi-
stance 10
6
Ω
).
Prior to any servicing and repair work: Make sure that the spray gun is in unpressu-
rized condition, i.e. all air and material inputs must be shut off - if not, imminent risk
of injury.
Keep your hands and other extremities away from the front of the spray gun - immi-
nent risk of injury.
Never point the spray gun at persons or animals - imminent risk of injury.
It is important that all processing specifications and safety warnings issued by the
manufacturers of spraying and cleaning media are duly complied with. Especially
aggressive and corrosive media can cause personal health problems.
Wear suitable hearing protections while working with the spray gun. Spray guns
produce sound levels of up to 86 dB (A), which may cause hearing defects.
Air-borne particles must be kept away from the working area and personnel. Wear
proper respiratory protection masks and protective overalls when working with
spraying media.Air-borne particles represent a health hazard.
Check that nuts and screws are tightened properly after performing servicing and
repair work.