25
24
Improper use is for example:
•
spraying of material onto persons and animals
•
spraying of liquid nitrogen, etc.
•
spraying of flammable media
2
Technical Description
The model PILOT WA 55 is operated automatically by compressed air and is con-
trolled via 3/2-way control valves. Hand-operated, foot-operated or solenoid-valve-
operated valves can be used for this purpose.
The flute-piston is in the starting position and the material duct in the piston body is
open. At frirst the atomising air (item 7b) is switched on by the 3/2-way-control valve.
Afterwards the control air (item 7a) is opened by a control valve (provided by custo-
mer) and the material supply is disconnected. The compressed air flowing into the
cylinder chamber moves the control piston and opens the material supply to the
material nozzle.
The closing takes place in reverse order.
For the cleaning process the 3/2-way control valve for the scavenger (item 28) is
activated. Afterwards the control air (item 26) for the piston body is actuated to push
backward the flute-piston to open the duct for the scavenger. The compressed air
flowing into the cylinder chamber moves the control piston and opens the supply to
the material nozzle.
Now the spray gun is fushed. The cleaning process takes 5 - 10 seconds.
The closing takes place in reverse order. Then the scavenger is switched off and the
atomizing air is activated short to clean the material nozzle from the scavenger.
By activating the control air (item 24) to push the flute-piston in the starting position
the scavenger supply is closed and the material supply is already opened.
After the control air (item 7a) for the housing is interrupted by the 3/2-way valve, the
compressed air in the cylinder chamber is allowed to escape. The spring pressure of
the piston spring shuts off the material supply to the material nozzle.
After this, the atomising air and the scavenger are switched off by the 3/2-way valve.
3
Safety instructions
3.1
Identification of safety instructions
Warning
The pictogram and the urgency level “
Warning
“ identify a possible danger to per-
sons.
Possible consequences: Slight to severe injuries.
Caution
The pictogram and the urgency level “
Caution
“ identify a possible danger to mate-
rial assets.
Possible consequences: Damage to material assets.
Note
The pictogram and the urgency level “
Note
“ identify additional information for the
safe and efficient operation of the spray gun.
3.2
General
Safety Instructions
• All applicable accident prevention rules and regulations as well as other recognis-
ed 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.
• Before carrying out maintenance or servicing work, always ensure that the air and
material feed to the spray gun have been depressurised. 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.
• Exhaust air containing particles (overspray) must be kept away from the working
area and personnel. In spite of these measures, always wear the regulation brea-
thing masks and protective overalls when using the gun. Airborne particles repre-
sent 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. 83 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 materials,
please contact WALTHER Spritz- und Lackiersysteme GmbH, D-42327 Wuppertal,
Germany.
4 Assembly
The spray gun is delivered fully assembled. Before using it, the following steps
should be carried out:
4.1
Mounting of Spray Gun
Install the gun in a suitable and stable mounting device. Use the centre hole of the
housing for locate the gun.
4.2
Connection of Input Lines
Warning
Make sure not to confuse the control and atomizing air connections -risk of injury.