Graco ASM M2300 Plus, Руководство по ремонту

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Motor Diagnostics
16 312496H
Motor Diagnostics
See Wiring Diagram, page 25.
Spin Test
Check for electrical continuity in motor armature, windings and brush as follows:
If Motor Diagnostics reveal a damaged motor or if motor brushes are shorter than 1/2 in. (12.7 mm) or if the motor
shaft cannot turn, replace the motor, page 24.
Setup
1. Relieve Pressure, page 6.
2. Unplug electric cord.
3. Remove drive housing, Drive Housing Replace-
ment , page 15.
4. Remove pressure control cover (50). Disconnect
connector F.
5. Remove four screws (12) and motor shroud (23)
and inspection covers.
Armature Short Circuit Test
Quickly turn motor fan by hand. If not shorted, motor will
coast two or three revolutions before complete stop. If
motor does not spin freely, armature is shorted. Replace
motor, page 24.
Armature, Brushes, and Motor Wiring Open
Circuit Test (Continuity)
1. Connect red and black motor leads with test lead.
Turn motor fan by hand at about two revolutions per
second.
2. If uneven or no resistance, check for missing brush
caps, broken brush springs, brush leads, and worn
brushes. Repair as needed, page 18.
3. If there is an uneven resistance or no resistance,
check for broken brush springs*, brush leads*, loose
brush terminal screws*, worn brushes*, or motor
lead terminals. Repair as needed, page 18.
4. If still uneven, or no resistance, replace motor using
Motor Kit , page 24.
50
F
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