Graco ULTRA MAX 695 Instructions-Parts List Manual page 6

TYPE OF WHAT TO CHECK
PROBLEM
If check is OK, go to next check
11. Motor thermal cutout switch. Connect ohmmeter between
motor yellow leads. Meter must read 1 ohm maximum.
12. Pressure transducer (67) by replacing it with a new one.
13. Pressure adjustment potentiometer (77) by replacing it
with a new one.
TYPE OF WHAT TO CHECK
PROBLEM
If check is OK, go to next check
Low output 1. For worn spray tip.
2. Verify pump does not continue to stroke when gun trigger
is released. Plug in and turn on sprayer. Prime with paint.
Trigger gun momentarily, then release and engage safety
latch. Relieve pressure, turn off and unplug sprayer.
3. Release gun trigger. Observe resting position of pump rod
(222).
4. Electrical supply with volt meter.
Meter must read 90–110 VAC for 232916, 232917.
Meter must read 105–125 VAC for 232910 – 232913,
232919
Meter must read 210–250 VAC for 232918, 232915,
232914.
5. Extension cord size and length; must be at least 12 AWG
(1.5 mm
6. Motor brushes. See Electrical – What To Check, item 4, on
page 5.
Low output 7. Motor control board (22a) by substituting with a good
board.
(continued)
CAUTION: Do not perform this check until motor armature
is determined to be good. A bad motor armature can burn
out a good board.
8. Motor armature for shorts by using an armature tester
(growler) or perform motor test. See page 9.
6 309067
Basic Problem Solving
Intermediate Problem Solving
2
) and no longer than 300 ft (90 m).
WHAT TO DO
When check is not OK, refer to this column
11. Allow motor to cool. Correct cause of
overheating. If switch remains open after
motor cools, replace motor.
12. Replace pressure transducer.
See page 16.
13. Replace potentiometer. See page 14.
WHAT TO DO
When check is not OK refer to this column
1. Follow Pressure Relief Procedure
Warning on page 3, then replace tip.
See your separate gun or tip manual.
2. Service pump. See page 11.
3. If pump consistently comes to rest
with rod (222) fully extended, the piston
packings and/or piston valve may be
worn. Service pump. See page 11.
4. Reset building circuit breaker; replace
building fuse. Repair electrical outlet or
try another outlet.
5. Replace with a correct, grounded exten-
sion cord.
6. See page 10.
7. Replace board. See page 13.
8. Replace motor. See page 12
.