29
28
6.2
Cleaning Complete
The spray gun should be frequently cleaned and lubricated to ensure a long service
life and functional reliability.
Caution
Never immerse the spray gun in solvent or any other cleaning solution as such
measure is very likely to affect the functional reliability and efficiency of the gun.
Caution
Do not use any hard, pointed or sharp-edged objects when cleaning the spray gun,
as the precision-made parts can easily be damaged and are likely to affect your
spraying results.
Clean the gun only with cleaning solutions recommended by the manufacturer of the
spraying material which 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.
WALTHER Spritz- und Lackiersysteme is not responsible for damages resulting from
this kind of treatment.
Clean the spray gun
•
prior to each change of the spraying medium
•
at least once a week
•
as often as may be required by the spraying medium handled and the resultant
degree of fouling.
Performing these steps will ensure safe gun operation.
1. Dismantle the spray gun accordaning to
5.5 Retooling of Spray Gun
.
2. Use a soft brush together with a compatible cleaning solution to clean the air
cap and nozzle.
3. Use a suitable cloth with a compatible cleaning solution to clean the gun body
and all remaining parts.
4. Apply a thin layer of grease to the following parts:
•
material control needle
•
needle spring
•
all sliding parts and bearing points
•
The moveable interior parts have to be greased at least once a week.
•
The springs have always to be coated with a thin layer of grease.
Make sure to use a non-acidic, non-resinogenic grease and apply this with a soft
brush. Afterwards, assemble the spray gun in reverse order.
6.3
Cleaning Routine
The spray gun does not have to be necessarily dismantled for cleaning if and when
the paint is changed in regular intervals or upon termination of work (depending, of
course, an the material used).
The following requirements must be met before the routine cleaning work can be
performed:
1. The cleaned gravity-feed cup has to be filled with a cleaning solution compatib-
le with the sprayed material.
2. Take the spray gun into operation (see
5.2 Starting / Stopping Requirements
).
3. Do not stop the spray gun until clear cleaning solution emerges from the nozzle.
All pressures should be removed from the complete spraying system until it is taken
into operation again.
7
Repairs / Replacements
Warning
Prior to any repairs /r eplacements: Make sure that the spray gun is in unpressurized
condition, i.e. all air and material inputs must be shut off - if not, imminent risk of
injury.
Note
Please use the exploded view at the beginning of these operating instructions in
order to perform the following procedures.
7.1
Replacement of defective Needle Seal Packing
1. Remove the material control needle (see
5.5 Retooling of Spray Gun
).
2. Remove the needle packing gland (Item 4) from the gun body.
3. Remove the needle seal packing (Item 5).
Assembly is performed in reverse order.
Note
Never reinstall a used needle seal packing, as otherwise the functional sealing
reliability of the spray gun will suffer.
7.2
Replacement of Material Control Nozzle and Needle
Disassemble the spray gun according to
5.5 Retooling the Spray Gun
.
Note
All sliding and moveable parts must be lubricated with a non-acidic, non-resinogenic
grease prior to installation.