Ransburg Aerobell 33 AER5000, AER5001 - Manual (Page 25)

Aerbell 33 Rotary Atomizer - Maintenance
Ransburg
21 LN-9521-00.4
Bell Cleaning
Normally, the internal cleaning instructions will
suffice to clean the bell. If the internal cleaning
instructions does not sufficiently remove all paint
and residue from the bell, the bell may be removed
for hand cleaning.
Inspection of the bell semiconductive coating is
required to determine if wear or flaking has oc-
curred. Excessive loss of bell coating can cause
poor transfer efficiency and paint wrap back onto
the atomizer.
Clean the bell by soaking in an appropriate solvent
to soften paint residue. Do not soak for more than
a 24 hour period. Use a soft cloth to remove the
paint and a soft tool like a toothpick to clean the
paint holes. Be sure that all signs of paint are
removed. Rinse and dry the bell.
W A R N I N G
† Do not attempt to clean the bell edge
while the bell is rotating. When attempting
to stop or slow down the bell cup, do not
hold a rag or gloved hand against the bell
edge. This could damage the bell edge,
which would adversely affect transfer effi-
ciency and coating quality.
!
W A R N I N G
† NEVER wrap the applicator, associated
valves and tubing, and supporting hardware
in plastic to keep it clean. A surface charge
may build up on the plastic surface and dis-
charge to the nearest grounded object. Effi-
ciency of the applicator will also be reduced
and damage or failure of the applicator com-
ponents may occur. WRAPPING THESE
COMPONENTS IN PLASTIC WILL VOID
WARRANTY.
!
W A R N I N G
† To reduce the risk of fire or explosion,
OSHA and NFPA 33 require that solvents
used for exterior cleaning, including bell
cleaning and soaking, be nonflammable
(flash points higher than 100 o F/37.8 o C).
Since electrostatic equipment is involved,
these solvents should also be non-polar.
Examples of non-flammable, non-polar sol-
vents for cleaning are: Amyl acetate, methyl
amyl acetate, high flash naphtha and miner-
al spirits.
† Do not use conductive solvents such as
MEK to clean the external surfaces of the
Aerobell 33.
† When using a rag to hand wipe the Aero-
bell 33, the turbine air should be off but leave
the shaping air and bearing air turned on.
Ensure the rotation has come to a complete
stop. Be careful not to drip solvent into the
opening behind the bell.
!
• Do not spray the Aerobell 33 unit with a sol-
vent gun used for cleaning. The cleaning fluid
under pressure may aid conductive materials
to wick into hard to clean areas or may allow
fluids to be forced into the turbine asembly.
• Do not reuse an atomizer bell that shows signs
of damage such as nicks, heavy scratches,
dents, or excessive wear.
† It may be advantageous to develop a
maintenance schedule for hand cleaning
and inspection of the atomizer bell cup.
(See Service Literature "IL-304" in the "Ap-
pendix" section of this manual.)
NOTE