Ransburg Aerobell (Std.) Rotary Atomizer A12381 - Manual (Page 44)

Vibration Noise
If the Aerobell is vibrating or making an unusually
loud noise, it usually means there is an imbalance
situation. The atomizer bell may have dried paint
on it, or the bell may be physically damaged, or
there may be paint trapped between the bell and
shaft preventing the bell from properly seating.
If any of these conditions exist, they must be
corrected. Excessive imbalance caused by one
of these conditions may result in bearing damage
and turbine failure. Warranty DOES NOT cover
failure caused by imbalanced loading conditions.
To determine if the bell is dirty or damaged, remove
the bell and turn the turbine on. If the noise is
eliminated, the bell cup is the problem. If the
noise continues, the turbine may be damaged
and should be inspected. Excessive air required
to achieve same speed may indicate a faulty
or contaminated turbine. DO NOT continue to
operate a noisy turbine.
PREVENTIVE
MAINTENANCE
(See "Preventive Maintenance
Schedule")
Daily/Weekly Maintenance
• Due to the close proximity of high voltage
to ground potential, a schedule must be
developed for equipment maintenance
(cleanliness).
• Verify that high voltge is OFF and that
shaping air, bearing air, and turbine drive air
are ON.
• Open the dump valve, if equipped, flushing
all paint from the supply lines and valve
module.
• Open the solvent valve, if equipped, flushing
all paint from the fluid tube and through the
atomizer bell assembly.
• Verify that high voltage is OFF, turbine drive
air is OFF, and that the bell cup has stopped
spinning. The bearing air and shaping air
should remain ON.
• Clean all external surfaces of the applicator
using a lint-free rag dampened with solvent.
External surfaces include the shroud, valve
module, and rear manifold.
• After cleaning, all conductive residue must
be removed using a non-conductive solvent,
since electrostatic equipment is involved,
these solvent should also be non-polar.
• Inspect bell cup for nicks, dents, heavy
scratches, or excessive wear. Replace if
necessary.
Internal Fluid Path Purge
Cleaning and Load
Cleaning the incoming paint line (from paint supply
source such as color manifold through the fluid
manifold and bell assembly:
Open the dump valve and flush the incoming paint
line with solvent or an air/solvent chop. Make
sure the last step of the sequence is air to purge
the dump line of remaining solvent. To speed
the loading of the new paint, leave the dump line
open to allow the air in front of the paint push
to escape. The length of time the dump valve is
open depends on several factors such as viscosity,
paint pressure, etc. Timing should be such that
the dump is closed as the paint reaches the trigger
valve in the atomizer. Paint in the dump line may
cause high voltage issues.
>
The high voltage must be turned OFF be-
fore entering the spray area and performing
any maintenance procedures. Spray booth
exhaust fan(s) should remain ON while
cleaning the equipment with solvents.
W A R N I N G !
Aerobell - Maintenance
40 LN-9264-08.2
Ransburg