Rev. 1.3
Assembly Instructions - Spray Valve SMS-22
Page 10 of 25
Walther Systemtechnik GmbH
– D 76726 Germersheim
Telefon: +49 (0)7274-7022-0 Telefax: +49 (0)7274-7022-91
http://www.walther-2000.de
5.4 Adjusting the Device
IMPORTANT
By turning the regulating screw you can adjust the material amount to the individual require-
ments:
Right turn:
decreasing the material quantity
Left turn:
increasing the material quantity
IMPORTANT
It is possible that the figures in this operating manual slightly deviate from the actual design
of the device. Nozzle and nozzle needle can be damaged by wrong handling. Never reduce
material quantity (right turn at the regulating screw) when no material is discharged. When
the nozzle is closed, do not attempt to turn the regulating screw further to the right.
6 Operation
6.1 General Information
This device may only be operated if the safety-related equipment is permanently effective and not suspend-
ed during operation or altered in its intended effectiveness.
6.2 Operation Instructions / Operating Conditions
CAUTION
Never point the jet at people. The wearing of eye protection is strongly recommended. The
spraying process can create noise depending on the air and fluid pressures used. Ear pro-
tection should be worn, if required.
WARNING
Danger caused by flammable, harmful fluid. Always follow the safety instructions on the con-
tainer or the safety data sheet for the fluid.
Spray valves of the
SMS-22
series generally operate with a control pressure of 5 - 6 bar. The atomizer
pressure has to be lower than the material pressure in order to avoid a repulse of the material. Atomized air
pressure and material pressure should be closely correlated.
IMPORTANT
In case high material pressures are required, make sure that the accident prevention
regulations of the trade associations will be strictly followed!
The control air pressure should be set at 5
– 6 bar.
The atomizer pressure has to be lower than the material pressure in order to avoid a repulse of the
material. Atomized air pressure and material pressure should be closely correlated. The atomizer air
will be controlled as follows: turn on before opening the needle and turn off after closing the needle
(guarantees broad maintenance-free operation).
For longer standstills, the material can remain in the valve, if it stays under pressure and if there is
no contact to outside air (only colors, abherents and oils). The material pressure in the hose,
however, should be decreased for greases in order to avoid any bleedings (oil separates).
Material and control air will only be used in clean, filtered condition. The control air should be slightly
greased when supplied to the spray valve/ spraying device.
