Ransburg Aerobell 168 A12787 - Manual (Page 51)

Aerobell 168 - Maintenance
LN-9270-12.3 48
MAINTENANCE (continued)
Atomizer Bell Assembly
Inspect the atomizer bell assembly for any
damage, wear, or paint build-up every day.
BELL CUP CLEANINGS
Always verify that high voltage is off and that
the atomizer bell is spinning before performing
any type of bell flush cleaning cycle.
To reduce the risk of fire or explosion, the sol-
vents used for exterior surface cleaning must
have flash points above 100°F (37.8°C).
Since electrostatic equipment is involved,
these solvents must also be non-polar.
Solvents used for equipment flushing should
have flash points equal to or higher than those
of the coating material being sprayed.
1. The atomizer bell will normally be fully
cleaned during a bell flush cycle. Flushing
should be done before any down time or
break in production. A bell flush cycle may
also be required while spraying batch parts of
the same color. Verify that high voltage is off
and that the atomizer bell is spinning before
flushing through the bell.
2. If there is any remaining paint build-up on
any areas of the bell after flushing, the bell
should be removed for hand cleaning. The
bell's leading edge, splash plate, and serration
cuts are some examples of areas for special
attention.
Bell Cup Soaking
Bell cups and splash plates can be soaked in
a heated solution for up to 2 hours in an ultra-
sonic cleaner (120°F (49°C) maximum).
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 loos-
ening or removing paint build-up. It is recom-
mended 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 in-
ternal 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 atom-
izer.
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 in-
stalling 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 hand tighten torque .
Manual InspecƟon
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.