Ransburg RMA-560 Single_Dual Purge Direct A13364 - Manual (Page 71)

Bell cup damaged
Low voltage
Paint lodged in shaping air ring
High current draw
Solvent valve is actuated
Loss of low voltage cable connection
between robot and bell plates
Improperly mounted air turbine
Improper limiting current and voltage
settings high voltage parts
Atomizer grounding out (usually
indicated by high current draw or
by MicroPak over-current fault light)
TROUBLESHOOTING GUIDE
General Problem Possible Cause Solution
Bad Spray Pattern
Low or No High
Voltage
Replace bell cup.
See “Low or No High Voltage” below.
Disassemble and clean (see “Mainte-
nance” section).
a. Paint resistivity to be .1 MW to h.
b. Replace coiled fluid line.
Remove solvent valve air pilot signal (high
voltage must be interlocked with the solvent
valve air pilot signal to prevent solvent flow
while high voltage is energized).
a. Remove atomizer and inspect low volt-
age connections on both plates. Verify
alignment marks between connectors
andplates and verify that connector
face is flush with plate. Verify that set
screws are secure, but not too tight, as
this will prevent the spring-loaded pins
on the robot plate from extending and
making contact.
b. Faulty low voltage cable.
Verify correct orientation of air turbine so
that high voltage spring makes contact with
metal pad on turbine assembly.
To readjust settings, refer to “MicroPak”
operating manual.
a. Clean atomizer externally with non-polar
solvent.
b. Check the atomizer externally with
non-polar solvent.
c. Check for fluid leaks at quick disconnect
mounting (between bell plate and robot
plate).
d. Check for internal arcing (usually in-
dicated by internal sparking sounds).
e. Make sure cascade low voltage con-
nection is properly shielded.
RMA-560 Single/Dual Purge Direct Charge - Maintenance
Ransburg
LN-9278-13 68