Ransburg Aerobell (Std.) Rotary Atomizer A12381 - Manual (Page 47)

Bell Cup Soaking
Bell cups and splash plates can be soaked in a
heated solution for up to 2 hours in an ultrasonic
cleaner (120°F (49°C) maximum).
Manual Inspection
3. Visually inspect the bell cup edge for signs of
abrasion. If the edge is worn or chipped as the
result of a collision with a part, replace the cup
immediately.
4. Remove splash plate. Inspect for wear on the
bell cup where the fluid leaves the large diameter
of the splash plate. If any undercut in this area,
the cup should be replaced. If worn, replace entire
splash plate assembly.
5. Splash plates may be soaked to loosen dried
material. Clean with a soft bristle brush. Blow
out center holes to dislodge material. Never use
any kind of pick instrument to clean these holes,
as it will damage them.
6. Soaking the bell in solvent may aid in loosening
or removing paint build-up. It is recommended
that the splash plate be removed and cleaned
separately.
7. Use a soft bristle brush dipped in solvent to
remove paint build-up from the serration cuts,
paint feed holes or slots, and external and internal
surfaces of the bell.
8. A soft, lint free rag dampened with solvent
may be used to remove any paint residue from
the external and internal surfaces of the atomizer.
9. After removing all paint build-up or residue,
rinse the bell in clean solvent and blow dry.
10. Before reinstalling the bell on the shaft, check
the mating surfaces of the thread and taper for any
paint build-up or residue. Also, check the fluid tip,
fluid tube outside diameter, and the shaft for any
further paint build-up. These surfaces should be
cleaned before installing the bell.
11. It is recommended that extra bell cups be
purchased. The cups can then be cleaned off-line
in an automated cup cleaner when the second set
is in production.
12. Reinstall cups to proper torque 50-70 lbs•in
(5.64-7.91 Nm).
CLEANING SHAPING AIR
SLOTS AND ANNULUS
In order to maintain uniform pattern control, the
shaping air holes of the inner ring and the shaping
air cap must be clean and free of any blockage.
It is best to leave the shaping air supply ON
during normal production break cleaning periods.
Shaping air can be reduced to 70 slpm during
this time. This will help material from entering
the passage ways.
Periodically (weekly or sooner) the outer shaping
air cap and the inner shaping air ring should be
removed and thoroughly cleaned. Use of an
ultrasonic cleaner would make cleaning of hole
diameters easier. Inspect all holes for blockage.
Blow holes clear with compressed air after some
time of soaking in solvent. DO NOT use any
type of pick to clear the holes. Damage may
result to parts and could affect performance of
the equipment. If holes are damaged (oversized
holes, blockage, gouges) it must be replaced.
Aerobell - Maintenance
43 LN-9264-08.2
Ransburg