Ransburg Aerobell (Std.) Rotary Atomizer A12381 - Manual (Page 42)

MAINTENANCE
In addition to the previous "Warning", which
relates to potential safety hazards, the following
information under "Caution" must be observed to
prevent damage to the equipment.
O-RINGS
All o-rings in this atomizer are solvent proof except
the ones in the air bearing spindle. These o-rings
must not be soaked in solvent; if these are exposed
or soaked in solvent, they must be replaced. These
o-rings are engineered to provide a fit between the
air bearing spindle and it's mating parts to reduce
or eliminate harmonic resonance (vibration).
Some o-rings are encapsulated. These o-rings
have a limited amount of stretch and will not return
to their original diameters if over-stretched. These
o-rings are subject to being distorted more easily
than rubber o-rings, so it is important that they
be sufficiently lubricated when mating parts are
installed onto them. They also will take a square
set over time and should be replaced periodically
if mating parts are removed repeatedly or if a new
mating part is installed onto them.
Any o-ring that is cracked, nicked, or distorted
must be replaced.
A suitable lubricant is food grade petroleum jell or
A11545-00 Petrolatum Jell.
Cleaning Procedures
The precise sequence of flushing the system of
paint will vary according to the type of color valve
arrangement used, and other automatic features
built into the system. But follow these basic
procedures when cleaning:
1. Verify high voltage is off.
2. With the bearing air and turbine air on, flush
paint out of material lines with solvent. Flushing
should be done before any break in production. If
the Aerobell is mounted vertical-facing up, rotate
to horizontal plane before flushing or cleaning.
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lectrical shock/arcing and fire hazards
can exist during maintenance. The high
voltage must be turned off before entering
the spray area and performing any main-
tenance procedures. Spray booth exhaust
fan(s) should remain on while cleaning the
equipment with solvents.
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Never touch the atomizer bell while it is
spinning. The front edge can easily cut into
human skin. Make sure the atomizer bell
has stopped spinning before attempting to
touch it. Wait at least three minutes after
turbine drive air is off before touching the
bell.
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Do not immerse the Aerobell turbine in
solvent or other liquids. Turbine compo-
nents will be damaged.
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Bearing air must be on during all clean-
ing procedures.
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If the Aerobell is sprayed off with a
solvent applicator for cleaning, the turbine
should be turned on, as well as shap-
ing air (high voltage off). Air exhausting
from the turbine and shaping air form a
curtain around the back edge of the bell,
and help prevent solvent from getting into
the cavity behind the bell. Do not direct
the solvent spray directly at the opening
behind the edge of the bell, as this may
allow solvent to be forced into the turbine.
W A R N I N G !
C A U T I O N !
Aerobell - Maintenance
38 LN-9264-08.2
Ransburg