Cleaning - Routine; Repairs / Replacements; Replacement Of Defective Needle Seal Packings; Replacement Of Material Control Needles - WALTHER PILOT WA 30 Instructions De Service

Cleaning of the gun only with cleaning solutions recommended by the manufacturer
of the spraying material used at the time. It is important to make sure that cleaning
solutions do not contain any of the following constituents:
• halogenated hydrocarbons (e.g. 1,1,1-trichloroethane; methylene chloride, etc.)
• acids and acidiferous cleaning solutions
• regenerated solvents (so-called cleaning dilutions)
• paint removers
The above constituents cause chemical reactions with electroplated components
resulting in corrosion damage.
Claims for damage arising from non-compliance with the above requirements will not
be accepted on the part of WALTHER Spritz- und Lackiersysteme. The spray gun
should be frequently cleaned and lubricated so as to ensure a long service life and
functional reliability.
Clean the spray gun
• before changing from one material type / grade to another
• at least once a week or more often - depending on the material and / or degree
of fouling of thegun
The above cleaning measures are designed to maintain the functional efficiency of
the gun.
1. Dismantle the spray gun (see 5.5 "Retooling of Spray Gun")
2. Use a soft brush together with a compatible cleaning solution to clean the
Airless spray tip
3. Use a suitable cloth with a compatible cleaning solution to clean the gun body
and all remaining parts
4. Apply a thin film of the appropriate grease type/grade to the:
• piston spring (Item 12)
• all sliding parts and bearing surfaces
• all internal moving parts should be greased at least once a week
• all springs should covered by a thin grease film at all times
Make sure to use a non-acidic, non-resinogenic grease type/grade and apply same
with a soft brush.
Assemble the spray gun in reverse order.
6.3

Cleaning - Routine

The spray gun need not necessarily be dismantled for cleaning if and when the
spraying medium is changed in regular intervals or upon termination of work (depen-
ding, of course, on the material used).
The following requirements must be met before the routine cleaning work can be
performed:
• Make sure that the cleaning solution is compatible with the material to be used.
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Now proceed as follows:
1. Take the spray gun into operation (see 5.2 "Starting/Stopping requirements).
2. Flush the spray gun at the lowest possible pressure rating.
3. Do not stop the spray gun until clear cleaning solution emerges from the Airless
spray tip.
All pressures should now be removed from the complete spraying system - which
should be left in this condition until it is taken into operation again.
7

Repairs / Replacements

Warning
Air and material inputs must be shut off prior to re-tooling - risk of injury.
Note
Please refer to the exploded view at the beginning of this manual to perform the
steps detailed below.
7.1

Replacement of defective Needle Seal Packings

1. Remove the sleeve nut (Item 14).
2. Remove the spring retaining bush (Item 13).
3. Pull the piston spring (Item 12) out of the gun body.
4. Pull the piston (Item 9) along with the material control needle (Item 6) out of the gun
body.
5. Remove the needle packing gland (Item 5) from the gun body.
6. Pull the needle seal packing (Item 4) off its seat - use a suitable piece of wire,
with a small hook formed at one end, for this purpose.
7. Install the new needle seal packing in the gun body.
Assembly of the remaining parts to be in reverse order.
Note
Needle seal packings removed from the gun are not to be used again because their
sealing efficiency can no longer be relied upon.
7.2 Replacement of Material Control Needle
1. Remove the sleeve nut (Item 14).
2. Remove the spring retaining bush (Item 13).
3. Remove the piston spring (Item 12).
4. Pull the piston (Item 9) along with the material control needle (Item 6) out of the gun
body.
5. Remove the material control needle (Item 6) from the piston (Item 9).
The setting dimension between the point of the needle and the face of the piston
is 49.5 mm.
Assembly to be in reverse order.
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