Cleaning, Maintenance - Krautzberger KS-1 Operating Instructions Manual

> Push the head section (6) with seal screw (10), insulating sleeve (11) and
insulating washer (9) into the borehole of the main element (12)
> Push the insulating washer (13) over the seal screw (10)
> Screw the head section (6) to the seal screw (10) using the hex nut (14), but do
not tighten!
> Insert the valve needle, cmpl. (15) into the main element from the back and push
forwards up to the stop (for KS-1D, see replacement of needle reinforcement)
> Push the spring (19) over the needle bolt (18) into the main element (12)
> Tighten the valve sealing screw (20)
> Only then should you tighten the seal screw (10) until there is noticeable
resistance and
> counter by tightening the hex nut (14)
Procedure for replacing the needle packing of the spray gun type KS-1M:
> First loosen the two union nuts (41)
> Then pull the material pipe (42) from the connecting nipples (after bending it
slightly)
Then proceed as for needle packing replacement in the other KS types.
Valve seat screw and material nozzle
> Unscrew the nozzle nut (1)
> Remove the material nozzle (102) and the gasket (3)
> Unscrew the valve seat screw, cmpl. (4) together with gasket (5)
> Pull the gasket (5) from the valve seat screw, cmpl. (4)
Assembly, unless already described otherwise, is performed in the reverse order. Lightly
lubricate the moving parts using a suitable grease, e.g. article no. 7026-500 from
Krautzberger GmbH (supplied in 250 g cans). Clean soiled parts, and replace parts
which no longer function properly. Ensure correct seat of gaskets!
(i) Notes
Always change the valve needle (16) (or in the KS-1D the needle reinforcement (50))
and the valve seat screw (4) together!
Following assembly of the parts (16) to (18), the valve needle (16) should project exactly
70 mm (or as close as possible) from the needle pusher (17). An overlength of up to 0.2
mm is admissible; short lengths result in inadequate valve seat.
Occasionally check the moving parts for free range of motion and lubricate with grease if
necessary!
8. Cleaning, maintenance, material change
Wearing parts such as material nozzle (102), valve seat screw (4) and valve needle (16)
or needle reinforcement (50), gaskets (3, 5, 7 and 26) and cup collars (8) as well as
springs (19) should be checked at appropriate intervals and replaced if necessary (e.g. if
the valve needle or needle reinforcement does not close sufficiently or if there is
uncontrolled discharge of coating substance).
(!) Danger
During maintenance and repair work and when changing the nozzle, first close the
shutoff valve at the material source and then press the trigger (22 or 25) until the spray
gun is without pressure. Always wait until the pressure has dissipated!. Then push
the safety catch (29) forwards (lock) and check that the safety catch (29) blocks the
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