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Rev. 1.3
7 Maintenance and Repair
7.1 General Information
The spraying valves of the SMS-05 series are high precision tools. Always keep clean and observe minimum
instructions to maintain a long and useful life of valve. We recommend lubricating moveable parts regularly,
and greasing threads, especially the nozzle threads, when replacing or cleaning the nozzle. It is
recommended to use clean and filtered application fluid only. The control air should also be clean.
Maintenance also depends on the individual operating conditions and the type of media used.
CAUTION
Before starting any maintenance or repair work, ensure that all air-operated tools are
depressurized and disconnected from the air supply.
Before opening the spray valve it must be disconnected from the air and fluid supply.
Otherwise, ejected components can cause injuries.
Particularly when using the spray valve as color-marking unit, the spray cap should be removed before
longer standstills. The spray cap will be cleaned with a cloth and special dilution. Please make sure, that no
cloth fibers remain on the nozzle tip. After that the valve will be sprayed free by using the manual release at
the SPS or manual support release at the 3/2-way valve (green head).
7.2 Cleaning
IMPORTANT
Only use soft brushes for outside cleaning of the nozzle tips. Never use metal tools with
sharp edges.
Wash equipment thoroughly after use to remove residues and dirt, especially if needle (Pos.7.0.0) or sealing
bushing (6.1.0) or material nozzle (Pos.2.1.0) has to be exchanged.
7.3 Replacing the Sealing Screw
Loosen lock (6) and unscrew. (Attention: there is spring pressure in the lock)
Pull out nozzle needle (3) together with air valve (4) from the main body (1).
Use a suitable socket wrench for unscrewing the sealing screw (2) from the main body (1).
Screw in the new sealing screw (2); make sure that the sealing screw is slightly greased with technical
petroleum jelly (Vaseline).
Reassemble spray valve in reverse order.
Assembly Instructions – Spray Valve SMS-05
Walther Systemtechnik GmbH – D 76726 Germersheim
Telefon: +49 (0)7274-7022-0 Telefax: +49 (0)7274-7022-91
http://www.walther-2000.de – info@walther-2000.de
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