Spin Test; Motor Brush Replacement - Graco Ultra Max 695 Manual

Setup
Electric Shock Hazard; page 4.
To check armature, motor winding and brush electrical
continuity:
1.
Relieve pressure; page 4.
2. Remove drive housing; page 21.
3. Fig. 10. Remove four screws (60), pressure control
cover (49), two screws (108), control panel (67).
Fig. 3. Disconnect motor connector (F).
4. Fig. 4. Remove motor shroud (90) and inspection
covers (A).
Armature Short Circuit Test
Quickly turn motor fan by hand. If no electrical shorts,
motor coasts two or three revolutions before complete
stop. If motor does not spin freely, armature is
shorted. Replace motor; page 22.

Motor Brush Replacement

695 Motor Brush Removal
Replace brushes worn to less than 1/2 in. Brushes
wear differently on each side of motor, check both
sides. Brush Repair Kit 243214 is available. Spring
clip, 112766, may be purchased separately.
1. Read General Repair Information; page 4.
2.
Relieve pressure; page 4.
3. Fig. 4. Remove motor shroud (90) and two inspec-
tion covers (A).
(Continued on page 10)

Spin Test

Armature, Brushes, and Motor Wiring Open
Circuit Test (Continuity)
1. Fig. 3. Connect red and black motor leads together
with test lead. Turn motor fan by hand at about two
revolutions per second.
2. If uneven or no resistance, check for: broken brush
springs, brush leads, motor leads; loose brush
terminal screws, motor lead terminals; worn
brushes. Repair as needed; page 9.
3. If still uneven or no resistance, replace motor;
page 22.
F
Fig. 3
Fig. 4
90
A
ti0941
7703B
9
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