Graco Ultimate Mx
695 Repair Instructions page 6

PROBLEM
Motor
Control board or wiring
Control/sensor
6
309255
Troubleshooting
WHAT TO CHECK
If check is OK, go to next check
1. Connections at control board and brushes
2. Brushes worn. Length must be 1/2 in. minimum.
Check both sides.
3. Broken or misaligned brush springs
4. Brushes or springs binding in brush holder
5. Check for armature short using an armature
tester (growler) or perform spin test. Page 9.
6. Check motor armature commutator for burn
spots or other damage
1. Loose control board wiring
2. Damaged control board
1. Potentiometer damaged
2. Pressure transducer damaged
WHAT TO DO
When check is not OK refer to this column
1. Repair any loose connections
2. Replace brushes. Page 9.
3. Realign or replace springs
4. Clean brush holder and align brush leads for
free movement
5. Replace motor
6. Remove motor and have motor shop resur-
face commutator if possible. Page 20.
1. Repair any loose connections
2. Replace control board
1. Replace potentiometer
2. Replace pressure transducer