Aerobell m rotary atomizer - maintenance – Ransburg Aerobell M Rotary Atomizer 78101 User Manual

Page 30

LN-9237-00.1

Aerobell M Rotary Atomizer - Maintenance

Turbine Removal

urbine Removal

The turbine assembly (Figure 16, item 10) is re-
moved from the Aerobell M atomizer after re-
moving the front shroud assembly. Four mount-
ing bolts (Figure 16, item 8) will then be ex-
posed, which hold the turbine assembly to the
air manifold assembly. These are the larger
socket head screws, located toward the outer
edge of the motor housing.

Holding the turbine assembly carefully so that it
does not drop and using a 5/32 inch Allen
wrench, remove the four mounting screws which
hold the turbine to the air manifold. Pull the tur-
bine assembly straight forward until it is beyond
the end of the fluid tube (Figure 16, item 3) and
the high voltage tube (Figure 16, item 6) is out
of the resistor block (Figure 16, item 22).

The turbine assembly can now be replaced or
serviced as necessary.

Reassemble Note:

Reassemble Note: Prior to replacing the turbine
assembly, make sure the bearing air o-ring (Fig-
ure 16, item 11) is in place on the air manifold
assembly (Figure 16, item 1). To replace the
turbine assembly, center the turbine shaft with
the feed tube, align the high voltage tube with
the resistor block, the shaping air tube with the
air manifold and push the turbine assembly
slowly in. Holding the turbine securely in place,
screw the four mounting bolts (Figure 16, item
8) through the rear of the turbine assembly into
the air manifold assembly. Tighten the four
mounting bolts alternately to a final torque of 15
lb

•

in.

Atomizer Bell Cup Removal

To remove the atomizer bell cup (Figure 16,
item 16), place the wrench, part number RPM-
419, over the flats on the motor shaft to lock in
place. Unscrew the bell by turning CCW with
the other hand (facing the front of the atomizer).
If the bell cannot be removed by hand, use a
second RPM-419, wrench, placed over the
wrench flats of the bell cup.

Refer to "Preventive Maintenance" in the "Main-
tenance" section for important information about
bell and shaft cleanliness. Do not install a paint
contaminated or damaged bell on the turbine
shaft. When installing the bell on the shaft, the
bell should be firmly

firmly

firmly secured by hand or use

wrench, RPM-419, and torque to 50 lb

•

in -0/+40

•

in.

Front Shroud Removal

Remove the front shroud (Figure 16, item 2)
from the atomizer, using the RPM-419, or other
properly fitting spanner wrench, and turning
CCW (viewed as facing the front end).

Note that when the front shroud is removed, the
shaping air cap (Figure 16, item 13) is removed
with it. The Aerobell M turbine (Figure 16, item
10) and the bell assembly (Figure 16, item 16)
will now be exposed.

Using the same wrench, it is also possible to
separate the shaping air cap from the front
shroud. This is much easier to do if the front
shroud is mounted on the turbine assembly,
since it is difficult to grasp the shroud and the
wrench simultaneously if the parts are removed
from the mechanical support of the assembly.
Hold the front shroud stationary while turning
the shaping air ring CCW. Note that it is only
necessary to separate these parts if replacing
one of them, or for thorough cleaning.

When installing the front shroud onto the turbine
assembly, be sure that it is fully tightened. The
shroud will appear tight after a few turns, but will
still be loose. The shroud can then be tightened
down fully until it bottoms against the air mani-
fold assembly.