Ransburg MMA-303 Direct_Ind Charge Atomizer A12870 - Manual (Page 103)

MMA-303 Direct/Indirect Charge - Maintenance
LN-9269-11.3 100
General Problem Possible Causes Corrective Action
Fluid and/or Air
Leakage Between
the Robot and Bell
Manifold Plates 1. Atomizer mounting ring is
loose
2. O-ring is missing
3. O-ring is damaged
1. Tighten mounting ring.
2. Install O-ring.
3. Visually inspect for damage and replace.
Fluid Leakage In
Fluid Manifold or
Bell Plate 1. O-ring is damaged
2. Fluid tubing not properly
installed or tightened.
1. Replace O-ring.
2. Inspect and retighten.
Fluid Leakage
Around Fluid
Valve 1. Damaged o-ring(s) on outer
diameter of valve body
2. Damaged or worn needle
seals inside valve assembly
1. Replace o-ring(s).
2. Replace valve assembly.
Turbine Cannot
Attain Desired
Speed 1. Excessive vibration
2. Low or no bearing air
3. Loss of fiber optic/no feed
back
1. a. Check bell cup for damage
b. Check bell cup for excessive paint
buildup
c. Bell cup loose - tighten to proper torque
d. Check cup and shaft tapers for cleanli-
ness
e. Have manufacturing check bell cup bal-
ance
2. a. Check bearing air pressure (minimum
80 psi) (352 kPa)
b. Check filters for contamination
c. Check for bent or damaged bearing air
line
d. Poor turbine air pressure - plant air
e. Damaged speed control cards
3. Damaged fiber optic sensor, bad cable,
too many splices. Maximum three (3) slices
per-mitted.
Loss of Exterior/
Interior Cup Wash
or Lack of Flow 1. Bent of kinked supply tube
2. No fluid flow
3. Blocked fluid tip or external
nozzle.
4. Ferrules holding tubing over
-tightened.
1. Replace.
2. Check microvalve, check fluid supply
source.
3. Clean parts, remove obstruction.
4. Replace tubing and ferrule assembly.
Troubleshooting Guide — Direct Charge (Cont.)