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Test Procedures
NOTE: Resistance readings slightly out of given
ranges may be due to meter conditions. These
readings DO NOT necessarily indicate motor
failure.
NOTE: Steps 8, 9 and 10 are with motor centrifugal
mechanism in the run position.
Meter Connections
Reading
Should Be
If Not
1.
Ground to Each Other Terminal
Open
Terminal shorted to ground.
2.
White to Yellow
Closed
Open thermal overload.
3.
Red to Brown
2-8 Ohms
Start winding open or resistance too high or too low.
4.
Blue to White
1-2 Ohms
High speed winding (4 pole) open or resistance too
high or too low.
5.
Violet to White (2-speed motor)
2.5 Ohms
(Approximate)
Low winding opening; High speed winding open; or
resistance too high or too low.
6.
“R” to Red
Closed
Open start (auxiliary) switch.
7.
“P” to Blue (2-speed motor)
Closed
Open start switch 4 pole winding.
8.
“R” to Red
Open
Start auxiliary switch.
9.
“P” to Blue (2-speed motor)
3 Ohms
(approximate)
Refer to Blue to White and Violet to White.
10.
“P” to Blue (2-speed motor)
Closed
Open low (6 pole) winding run switch.