Description Of Unit; Mist-Free Airless Method; Functioning Of The Unit - WAGNER NESPRAY PLUS Mode D'emploi

NESPRAY PLUS
3.

DESCRIPTION OF UNIT

3.1

MIST-FREE AIRLESS METHOD

The main area of application are thick layers of highly viscous
coating material (here in particular NespriTec paints) for large
areas and a high consumption of material in particular at fa-
cades.
At the NESPRAY PLUS unit a diaphragm pump takes in the
coating materials and transports it via a high-pressure filter
and the electrically heated high-pressure hose to the special
dual tip. Here the coating material atomizes since it is pressed
through the two tip cores at a maximum pressure of 200 bars
(20 MPa).
The two tip cores, each of which has a clearly smaller cross-
section than a tip usually used for this application, allow the
spray pressure to be reduced to such an extent that heated
material can nevertheless be atomized micro-finely. Because
there are two tip cores, enough material can be applied to en-
sure rapid working.
The designation „Airless process" is based on the fact that air is
not used for atomizing.
3.2

FUNCTIONING OF THE UNIT

The following section contains a brief description of the tech-
nical construction for better understanding of the function:
NESPRAY PLUS is an electrically operated high-pressure paint
spraying equipment with paint heating.
The motor (Item 1) drives the hydraulic pump via the toothed
belt (2).
A piston (3) is moved up and down so that hydraulic oil is
moved under the diaphragm which then moves.
In detail:
The downwards movement of the machine opens the disk in-
let valve automatically and coating material is sucked in.
During the upwards movement of the diaphragm, the coating
material is displaced and the outlet valve opens while the inlet
valve is closed.
The coating material flows under high pressure through the
high-pressure hose to the spray gun and is atomized when it
exists from the tip.
The pressure control valve (5) limits the set pressure in the
hydraulic oil circuit and thus also the pressure of the coating
material.
A pressure change when the same tip is used also leads to a
change in the amount of paint atomized.
The high-pressure hose contains a resistance wire loop (6) that
extends across the entire length of the hose. This resistance
wire is heated electrically and warms up the coating material
flowing past. The set temperature of the resistance wire is kept
constant by means of a controller in the pump housing.
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GENERAL VIEW OF APPLICATION
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