For Service Technician Use Only
COMPONENT TESTING (Cont.)
Whirlpool
®
and KitchenAid
®
Filtration and Maytag
®
24" Microfiltration Dishwashers
n
3-19
Global Wash Motor VSM
This test will check the wiring to the wash motor and the wash
motor itself. The following items are part of the wash motor
circuit:
n
Harness/Connection
n
Wash Motor
n
Control Board
Test Procedure
1.
Check the tube and sump for anything that may be impeding
water flow. Inspect and if necessary clean the coarse-filter
system. Also inspect spray arm and nozzle and clean if
needed.
2.
Check the wash motor and electrical connections by
performing the Service Diagnostics Cycle. The following steps
assume that this step was unsuccessful.
Strip Circuit - Variable Speed Wash Motor
3.
Unplug power or disconnect dishwasher.
4.
Remove toe and outer door panels to access control board.
5.
Unplug connector P5 from control board.
6.
Check the wash motor using an ohmmeter, measure the
resistance between P5-1 and P5-2.
¾
If the resistance is between 16-18 ohms, the wash motor
and harness are good. Go to step 7.
¾
If outside the range, replace the wash motor.
¾
If an open circuit is detected, check connections and
harness continuity between control and wash motor. If
good, replace the wash motor.
7.
Reassemble all parts and panels.
8.
Plug in dishwasher or reconnect power and run Diagnostics
Cycle to verify repair.
DANGER
Electrical Shock Hazard
Only authorized technicians should perform
diagnostic voltage measurements.
After performing voltage measurements,
disconnect power before servicing.
Failure to follow these instructions can result in
death or electrical shock.
Variable
Speed
Controller
Variable Speed
Wash Motor
16
Ω
- 18
Ω
APPROX 60 W at 3200 RPM
Pin to Pin
Wash/Drain - On Some Models
P5-1
LT BU
Pin 3
Pin 2
Pin 1
LT BU
LT BU
P5-2
P5-3
Содержание M-17
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