Whirlpool cabrio - Page 15

PAGE 15
FOR SERVICE TECHNICIAN’S USE ONLY
DO NOT REMOVE OR DESTROY
9. Reassemble all parts and panels.
10. Plug in dryer or reconnect power.
11. Perform steps under “Service Test Mode”,
page 6, to verify repair.
TEST #3: Motor Circuit
This test will check the wiring to the motor
and the motor itself. The following items are
part of this motor system:
NOTE: Refer to strip circuit on page 24
to diagnose drive motor.
1. Unplug dryer or disconnect power.
2. Remove console to access the machine
electronics.
3. Check for loose, worn, or damaged drum
belt—repair as necessary.
4. Door Switch problems can be uncovered
by following procedure under TEST #7: Door
Switch, page 22; however, if this was not
done, the following can be performed without
applying power to the dryer. Connect an
ohmmeter across ACU P8-3 (neutral, white
wire) and P8-4 (door, tan wire).
With the door properly closed, the ohmmeter
should indicate a closed circuit (0–2 Ω).
If not, check harnesses and connections
between ACU and door switch. If good,
replace the door switch assembly.
5. Motor Circuit Check - Access the ACU and
measure the resistance across P8-4 and P9-1.
If resistance across P8-4 and P9-1 is in
the range of 1 to 6 Ω, the motor circuit is
acceptable. Replace the ACU.
Otherwise, continue to step 6.
6. Check the wiring and components in the path
between these measurement points by referring
to the appropriate wiring diagram (gas or electric)
on pages 25 or 26. NOTE: To access motor
system components, slide the top back and
remove the front panel.
ELECTRIC DRYER ONLY: Check the thermal fuse.
See TEST #4b: Thermal Fuse, page 20.
ALL DRYERS: Continue with step 7 below to test
the remaining components in the motor circuit.
7. Check the drive motor. Slowly remove the
drum belt from the spring-loaded pulley, gently
letting the pulley down. See figure 7.
8. Remove the white connector from the drive
motor switch. See figure 8.
9. Remove the bare copper wire terminal from
pin 5 of black drive motor switch. See figure 9a.
Part of Motor System
Electric
Dryer
Gas
Dryer
Drum belt
üü
Door switch
üü
Harness/connection
üü
Thermal fuse
ü
no
Drive motor
üü
Motor capacitors
üü
Centrifugal switch
üü
Machine control electronics
üü
Belt switch
üü
Figure 7 - Slowly remove drum belt.
Drum
Belt
Pulley
1
5
3
4
6
2
Figure 8 - Remove white connector.
White
Connector
Drive Motor Switch
1
5
3
4
6
2
Main Winding: Lt. Blue Wire
in Back and Bare Copper Wire
Start
Winding:
Lt. Blue Wire
in Back and
Bare Copper
Wire
Figure 9a - Main and start winding measure points.