Ransburg RMA Dual Purge Direct A12300 - Manual (Page 63)

RMA-303 Dual Purge/Direct Charge - Maintenance
58
† Make sure that no solvent or other
contamination is allowed to enter the mo-
tor assembly (air bearing and outer shaft).
W A R N I N G
!
• Visually inspect for signs of fluid leaks around
fluid connections and manifold. Correct prob-
lem and clean paint from all components,
including internal portion of shroud.
• Reinstall bell cup and front shroud and re-
place cover on the outer housing (refer to
"Disassembly Procedures" in the "Mainte-
nance" section for definite instructions).
• Recheck bell cup tightness. Torque to 50-70
lbs•in (5.64-7.91 Nm).
BELL CUP PREVENTIVE
MAINTENANCE
It is the user's responsibility to ensure proper
maintenance of the atomizer bell at all times.
Bell cup failure due to inadequate cleaning or
handling will not be covered under Warranty. The
"WARNING" bullets listed are some examples of
improper handling which could adversely affect
performance or personnel safety and should not
be attempted for any reason.
Bell Cup Handling
Always verify that high voltage is turned off and
the atomizer bell has stopped spinning before
performing any type of handling maintenance.
Bell Cup Replacement
Bell cup wear is dependent on many factors such
as bell speed, flow rate, and type of coating being
applied.
The bell cups shown in the following photos
indicates if a bell cup has some useable life or
should be replaced. Photo 1 shows a bell cup
that has some useable life. The grooves worn
around the splash plate pins are shallow. The
general appearance of the cup surface is smooth
and uninterupted. Photo 2 shows a bell cup that
needs to be replaced, as well as the splash plate
that was installed into the cup. The grooves are
deep, a visible groove exists at the outer edge
diameter of the splash plate, and there are no-
ticeable lateral grooves extending towards the
outer edge of the cup.
Figure 22: Inspection of Bell Cups
Ransburg
LN-9263-08.5