Whirlpool CAE2743B, Руководство по обслуживанию

Страница: 15 / 40

PAGE 15
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DES TROY
Figure 5 - PSC Motor Strip Circuit (shown in ON position)
Main Control
CW TRIAC
Main Control Main Control
CCW TRIAC
J15-3 J15-4 J16-5
Pin 2
Pin 1
Pin 4
Pin 3 J16-7
J16-6
J7-3 J7-1
PSC Motor
Run
Cap/
Inductor
CCW Winding*
CW Winding*
Lock Switch
N L1
* 1/3 HP Motor – Each Winding 3.5 to 6 ohms/ * 1/4 HP Motor – Each Winding 5 to 9.5 ohms
1
3
If visual checks pass, go to step 6.
If connectors are not inserted properly, reconnect J2 and J16
and repeat step 1.
6. Plug in washer or reconnect power. Run the Gentle Agitation
test under Manual Overview Test Mode on page 9.
7. With a voltmeter set to AC , connect black probe to J16-5 (N)
and red probe to J16-6 (CCW Winding).
If 120VAC is cycling ON during CCW rotation, go to step 8.
If 120VAC is not present, go to Test #1: Main Control,
page 12.
8.
With a voltmeter set to
AC
, connect black probe to J16-5 (N),
red probe to J16-7 (CW Winding).
If 120VAC is cycling ON during CW rotation, go to step 9.
If 120VAC is not present, go to Test #1: Main Control,
page 12.
9. Unplug washer or disconnect power.
10. Remove connector J16 from main control. With an
ohmmeter, check resistance of motor windings across the
following J16 connector pinouts:
NOTE: If the console has a cycle selector knob and 4 rotary
switches, the motor size is 1/3 HP.
If values are open or out of range, go to step 11.
If values are correct, go to step 15.
11. Tilt washer back to access drive system.
12. Visually check the mounting bracket and electrical
connections to the motor and shifter.
If visual check passes, go to step 13.
If connections are loose, reconnect the electrical
connections, reassemble motor cover, and repeat step 1.
13. With an ohmmeter, check the harness for continuity
between the main control, motor, and run capacitor
using the following test points.
If there is continuity, go to step 14.
If there is no continuity, replace the lower machine harness
and repeat step 1.
14. With an ohmmeter, check resistance of motor windings
at the following motor connections.
NOTE: If the console has a cycle selector knob and 4 rotary
switches, the motor size is 1/3 HP.
If values are open or out of range, replace motor.
If values are correct, go to step 15.
15. Test Motor Run Capacitor. NOTE: A faulty capacitor may
cause the motor to “hum”, not start, or turn slowly.
a.
Discharge the capacitor by touching the leads of a 20,000
Ω
resistor to the two terminals.
b. Disconnect the wires from the capacitor terminals.
c. With an ohmmeter, measure across the terminals and note
reading.
If a steady increase in resistance is noted, continue to step 16.
Motor Winding J16 Pinout
CCW Winding J16, 5 & 6
CW Winding J16, 5 & 7
Size
1/4 HP
Resistance
5 to 9.5 Ω
5 to 9.5 Ω
CCW Winding J16, 5 & 6
CW Winding J16, 5 & 7
1/3 HP
3.5 to 6 Ω
3.5 to 6 Ω
Motor Harness Check
Motor Connector Pin-1 to Chassis Ground
Motor Connector Pin-3 to Main Control J16-7
Motor Connector Pin-3 to Run Capacitor Pin-3
Motor Connector Pin-4 to Main Control J16-6
Motor Connector Pin-4 to Run Capacitor Pin-1
Motor Connector Pin-2 to Main Control J16-5
Motor Winding Motor Pinout
CCW Winding Pins 4 & 2
CW Winding Pins 3 & 2
Size
1/4 HP
Resistance
5 to 9.5 Ω
5 to 9.5 Ω
CCW Winding Pins 4 & 2
CW Winding Pins 3 & 2
1/3 HP
3.5 to 6 Ω
3.5 to 6 Ω