Ransburg RMA Indirect A12869 - Manual (Page 57)

RMA-303 Indirect Charge - Maintenance
LN-9268-11.4 52
BELL CUP PREVENTIVE MAINTE-
NANCE
It is the user's responsibility to insure 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 "DO NOT" bullets (see "Operator/
Maintenance Warnings" in the "Maintenance"
section) listed are some examples of improper
handling which could adversely affect perfor-
mance 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 mainte-
nance.
Bell Cup Replacement
Bell cup wear is dependent on many factors
such as bell speed, flow rate, and type of coat-
ing being applied.
The bell cup shown in the following photos in-
dicates if a bell cup has some useable life or
should be replaced. Photo 1 shows a bell cup
that has some usable life. The grooves worn
around the splash plate pins are shallow. The
general appearance of the cup surface is
smooth and uninterrupted. 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 noticeable lateral grooves ex-
tending towards the outer edge of the cup.
Photo 1
Photo 2