Ransburg MMA-570 Direct_Ind Charge Atomizer A13366 - Manual (Page 81)

TROUBLESHOOTING GUIDE - DIRECT CHARGE
(Cont.)
Damaged fiber optic cable be-
tween robot plate and control
panel
Connection at robot or bell plate
is loose
Fiber optic transmitter failure
Bad transceiver module
Excessive vibration
Turbine is not rotating
Fluid valve does not actuate
Clogged fluid tube/fluid tip
Bad transceiver module
Fluid valve open
Fluid valve seat damaged or worn
Insufficient back pressure to fluid
regulator
Fluid regulator does not control
flow (system)
a. Repair or replace fiber optic cable.
b. Bad splice connection or too many
splices. Maximum three (3) splices
permitted.
Re-install cable and tighten locking set
screw.
Replace fiber optic transmitter.
Replace transceiver module.
a. Check bell cup for damage
b. Check bell cup for excessive paint
buildup
c. Insure bell cup is tightened properly
d. Check cup and shaft tapers for clean-
liness
Verify rotation of turbine (the paint
valve air pilot must be interlocked with
the turbine speed feed back signal to
ensure that paint does not flow into the
air bearing).
a. Verify that air pilot signal is present.
b. Fluid valve air pilot pressure is too
low. Increase air pressure to 70 psig
minimum.
c. Replace fluid valve.
Remove and inspect fluid tube or fluid tip.
Replace transceiver module.
a. Remove air pilot signal.
b. If still open, replace fluid valve.
Replace fluid valve seat.
Replace fluid tip with the next smaller
inner diameter size.
Disassemble fluid regulator and inspect
for failed components (system).
General Problem Possible Cause Solution
Speed Feedback
Fault
No Fluid Flow No Fluid Flow
Continuous Fluid
Flow
Uncontrollable
Fluid Flow
MMA-570 Direct/Indirect Charge - Maintenance
Ransburg
LN-9279-13 78