Ransburg MMA-303 Direct_Ind Charge Atomizer A12870 - Manual (Page 92)

MMA-303 Direct/Indirect Charge - Maintenance
89 LN-9269-11.3
Re-apply 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 ex-
cess grease.
CHECKING PROBES (Continued)
High Voltage Ring Lubrication
ELECTRODE RESISTANCE TEST
To verify that all indirect charge electrodes
are functioning, place one lead of a Yokoga-
ma megohm 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 Assem-
bly Resistance Reading” chart for the proper
resistance reading for the electrode assembly.
ELECTRODE ASSEMBLY RE-
SISTANCE READING
Part #
Resistance Reading
(Megohms) Used At
(Locations)
A11343-02 209-231 Sea Level
A11343-03 129-151 Above 5,000 ft.
If readings fall out of this range, disassemble
electrode assembly and check reading of re-
sistor only. If reading is in the acceptable
range, discard the electrode body (A11342-00)
and replace with a new one. Rebuild electrode
assembly as follows: apply a small amount of
dielectric grease to each end of the resistor,
slide resistor into the electrode body (A11342-
00). Install the contact assembly after the re-
sistor. Finally, apply a small amount of dielec-
tric grease to contact area of plunger contact
assembly. Thread plunger contact assembly
into electrode body by hand until it stops.
Hand-tight is good enough. Over-tightening
will damage the electrode body (see
“Disassembly/Assembly Electrode Assembly”
figure).
RESISTOR
A11342-00
ELECTRODE BODY ASSEMBLY
CONTACT ASSEMBLY
PLUNGER CONCTACT ASSMBLY
CHECK REISTANCE BETWEEN
ENDS OF RESISTOR
WHEN RE-ASSMBLING, ADD A SMALL
AMOUNT OF DIELECTRIC GREASE TO
ENDS OF RESISTOR
WHEN RE-ASSEMBLING, APPLY A SMALL
AMOUNT OF DIELECTRIC GREASE TO CONTACT
Disassembly/Assembly Electrode Assembly