Walther SMS-02 Assembly Instructions Manual - page 13
Rev. 1.2
Assembly Instructions - Spray Valve SMS-02
Page 13 of 34
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
7 Maintenance and Repair
7.1 General Information
The spray valves of the SMS-02 series are high-quality precision devices which will not fail if treated
correctly and will operate almost maintenance-free. All mobile parts should be regularly oiled and also the
threads should be greased when the nozzles are cleaned or exchanged. Always keep clean and observe
minimum instructions to maintain a long life of the valve. Always use clean and filtered material only. The
control air must also be clean, if necessary. 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.
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.7.0.70), or
sealing sleeve (6.1.0) or material nozzle (Pos.2.1.0) have to be exchanged.
7.3 Exchanging the Air Valve (11.0.0)
Unscrew locking screw (11.1.0)
Remove spring (11.3.0)
Pull out locking piston (11.2.0)
Exchange O-rings (11.1.1 + 11.2.1) if necessary
Slightly grease and re-assemble in reverse sequence.
7.4 Exchanging the Return Check Valve, complete (10.0.0)
Unscrew locking screw (10.4.0)
Unscrew fastening thread pin (10.6.0)
Use a screw (M3) of sufficient length and screw it in instead of adjusting screw (10.4.0) in order to
carefully pull out the basic casing (10.1.0)
If necessary, also exchange the reversing sleeve (10.5.0) and the O-ring (10.2.0) as well as the O-ring
(10.3.0) on the unscrewed adjusting screw (10.4.0).
Slightly grease and re-assemble in reverse sequence.
7.5 Replacing the Needle (7.0.0) and the Nozzle (2.1.0)
Completely unscrew raster-needle lock (9.0.3)
Remove air cap (1.1.0) with retainer ring (3.1.0)
Unscrew nozzle (2.1.0)
Carefully push needle (7.0.0) from the nozzle side to the back
Re-assemble new, slightly greased parts in reverse order.
IMPORTANT
Nozzle set = Nozzle needle, nozzle and air cap (should always replaced at the same time)
!
We do not recommend employing used needles. Leakages are caused by pricking needles
which are not completely clean through the shaped sealing (5.1.0).