Ransburg RMA Indirect A11600 - Manual (Page 70)

CHECKING PROBES
Check atomizer voltage using the Ransburg Test
Meter Kit (76652-01 or 76652-04). Verify that the
ouput voltages have not varied much from the
setup standard. A drastic change in voltage can
be an early indicator of a component or system
problem. The data shown was collected under
the ideal lab conditions using a clean atomizer
and an unloaded fluid delivery system.
The following data is for use with the RMA-303. The
output voltage measured at the bell will normally
range between 91% and 97% of the kV set point
displayed at the control unit. Typically setting for
spraying is 70 kV.
High Voltage Ring Inspection
Examine entire ring for burning marks indicated
by metled plastic or blackened areas around or
near where the electrodes are located, the area
where the high voltage input tube is, and on the
inner diameter of the ring.
If any area is found with the above conditions, the
ring must be replaced.
After verifying, clean all old dielectric grease from
the eight (8) protrusions on the front of the ring
and from the concentric circles at the high voltage
input protrusion.
Reapply dielectric grease (LSCH0009) to both of
these areas. The eight (8) protrusions only require
a thin film of grease. The high voltage input area
must be filled with grease allowing no air voids.
Excess grease will be squeezed out when the
input tube and high voltage cable are installed.
Wipe off all excess grease.
Figure 53: High Voltage Ring Lubrication
ELECTRODE
RESISTANCE TEST
To verify that all indirect charge electrodes are
functioning, place one lead of a Yokogama meg-
ohm meter or equivalent to the metal contact at
the base of the electrode and the other end to the
small metal wire at the tip of the electrode. Refer
to the "Electrode Assembly Resistance Reading"
chart in this section for the proper resistance
reading for the electrode assembly.
Figure 54: Electrode Resistance Test
MEGOHM
METER
FILL THIS CAVITY
WITH DIELECTRIC GREASE
DO NOT FILL CENTER CAVITY
WITH DIELECTRIC GREASE
RMA-303 Indirect Charge - Maintenance
Ransburg
66 LN-9252-06.4