Motor Test - Graco ULTRA MAX 695 Instructions-Parts List Manual

Relieve pressure; page 3.
For checking armature, motor winding and brush
electrical continuity.
Setup
1. Unplug sprayer.
2. Remove drive housing. See page 15. This ensures
that any resistance noticed in armature test is due
to motor and not to worn gears in drive housing.
3. Fig. 3. Remove brush inspection covers (A).
4. Fig.4. Remove screws (25, 26). Lower control
board (22a). Disconnect two leads (C) from motor
to board.
Fig. 3

Motor Test

B
A
02991
Armature Short Circuit Test
1. Remove fan cover (B). See Fig.3.
2. Spin motor fan by hand. If there are no shorts,
motor coasts two or three revolutions before
coming to complete stop. If motor does not spin
freely, armature is shorted and motor must be
replaced. See page 12.
Armature, Brushes, and Motor Wiring
Open Circuit Test (Continuity)
1. Fig. 4 Connect red and black motor leads (C)
together with a test lead. Turn motor fan by hand
at about two revolutions per second.
brown
80 96
D
yellow
black
green
78
30
white
black
E
232910 – 232913, 232916, 232917
brown
80
119
D
black
yellow
white
78
green
with yellow
stripe
black red
C
116
232918, 232915, 232919, 232914
Fig. 4
2. If uneven or no resistance, check for: broken brush
springs, brush leads, motor leads; loose brush
terminal screws or motor lead terminals; worn
brushes. See page 10.
3. If still uneven or no resistance, replace motor;
page 12.
107
108
67
22a
77
red
C
8385A
107
E
108
67
22a
77
96
blue
8386A
309067 9