4
ProSpray 3.20
GB
General view of application
Description of unit
2.
General view of application
2.1 Application
The unit performance is conceived so that its use is possible on
building sites for small- to middle-area dispersion work.
Examples of objects of spraying
The sprayer is able for all common varnishing jobs like doors, door
frames, balustrades, furniture, woodencladding, fences, radiators
(heating) and steel parts.
2.2
Coating materials
Processible coating materials
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Pay attention to the Airless quality of the coating
materials to be processed.
Dilutable lacquers and paints or those containing solvents, two-
component coating materials, dispersions, latex paints, release
agents, oils, undercoats, primers, and fillers.
No other materials should be used for spraying without WAGNER’s
approval.
Filtering
Despite suction filter and insertion filter in the spray gun, filtering of
the coating material is generally advisable.
Stir coating material before commencement of work.
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Attention: Make sure, when stirring up with motor-
driven agitators that no air bubbles are stirred in. Air
bubbles disturb when spraying and can, in fact, lead
to interruption of operation.
Viscosity
With this unit it is possible to process highly viscous coating materials
of up to around 20.000 MPa·s.
If highly viscous coating materials cannot be taken in by suction, they
must be diluted in accordance with the manufacturer’s instructions.
Two-component coating material
The appropriate processing time must be adhered to exactly. Within
this time rinse through and clean the unit meticulously with the
appropriate cleaning materials.
Coating materials with sharp-edged additional materials
These have a strong wear and tear effect on valves, high-pressure
hose, spray gun and tip. The durability of these parts cane be reduced
appreciably through this.
3.
Description of unit
3.1
Airless process
The main areas of application are thick layers of highly viscous
coating material for large areas and a high consumption of material.
A piston pump takes in the coating material by suction and conveys it
to the tip. Pressed through the tip at a pressure of up to a maximum
of 207 bar (20.7 MPa), the coating material is atomised. This high
pressure has the effect of micro fine atomisation of the coating
material.
As no air is used in this process, it is described as an AIRLESS process.
This method of spraying has the advantages of finest atomisation,
cloudless operation and a smooth, bubble-free surface. As well as
these, the advantages of the speed of work and convenience must
be mentioned.
3.2
Functioning of the unit
In the following there is a short description of the technical
construction for better understanding of the function.
Wagner ProSpray 3.20 units are electrically driven high-pressure
spraying units.
A gear unit transfers the driving force to a crankshaft. The crankshaft
moves the pistons of the material feed pump up and down.
The inlet valve is opened automatically by the upwards movement
of the piston. The outlet valve is opened when the piston moves
downward.
The coating material flows under high pressure through the high-
pressure hose to the spray gun. When the coating material exits from
the tip it atomizes.
The pressure control knob controls the volume and the operating
pressure of the coating material.
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The PS 3.20 is available in different configurations.
All information given in this manual applies to all
configurations unless otherwise specified.
