KitchenAid KP - Speed Control Assembly Service and Testing; Replacing the Mixer Speed Control Board; Testing the Mixer Control Assembly

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KitchenAid
6-Quart Stand Mixer Manual LIT4176981
© 2002 KitchenAid
SPEED CONTROL ASSEMBLY SERVICE - The
KitchenAid Stand Mixer utilizes a Solid State Speed
Control that mounts to the Lower Gearcase with (2) 8-
32 x 5/8" Phillips Screws.
This componentis not servicable or adjustable and
will have to be replaced if it fails mechanically or
electrically.
SOLID STATE
— CONTROL
BOARD
. KEEP THE SOLID
STATE CONTROL
BOARD AWAY FROM
TRANSMISSION
GREASE
TESTING THE CONTROL ASSEMBLY - The
Control Assembly should first be tested with the Mixer
in the "Off" position and disconnected from the AC
Mains.
NOTE: Before you begin this test check the condi-
tion of the Stand Mixer Power Cord and replace it if it
is damaged or defective.
e Simply move the Handle from the "Off" position
and observe each of the six speed detents.
* These should have a distinct locking action in
each of the six running positions.
* Now return the Mixer to the "Off" position and
plug it into the AC Supply.
The Mixer should not run in the "Off" position.
NOTE: The mixer must be in the "Off" position
for 5 seconds - in order to Reset.
* Carefully move the Controlto the first "Stir" speed
and confirm operation.
* Remember that ALL Speeds have a "Soft Start"
feature that automatically starts the Mixer at a slower
speed to help prevent "Splash Out".
* You should observe a slight pause as you move
' from each speed. Confirm the operation at each of the
six (Stir -2-4-6-8-10) detents of the Control.
REPLACING THE SPEED CONTROL - If replace-
ment of the Control Assembly is necessary, make sure
that the Mixer is unplugged from the AC Mains and
after removing the Motor Housing, remove the (2) 8-32
x 5/8" Phillips Screws that hold the Control Assembly
to the Lower Cover.
SOLID STATE SPEED CONTROL
BOARD CONTACTS
HALL
EFFECT H
CABLE
P5 [2]
UNSWITCHED
Lad C - ON/OFF
MOTOR 2
HERE]
P3 NEUTRAL mmm
P1 LINE mmm
P2 MOTOR 1 mum
maux] NC - ON/OFF
NOTE: Refer to the wiring
diagrams for wiring details on
specific 6-Quart Stand Mixer
models.
Check the Control Assembly wire leads first and
tighten them if a loose or broken connection is noted at
the Spade Lug Connectors.
Retest before replacing Control Board—then if the
fault persists: (Be sure unit is unplugged!)
* Verify that wire leads are identified relative totheir
position on the Control Board. (Label if necessary.)
* Using Needle Nose Pliers remove the (2) Motor
Leads, the (2) Power Cord Leads and the Hall Effect
Sensor Connector from the Circuit Board..
* Using the replacement Control Assembly,
reconnect these leads to the appropriate points on the
Circuit Board.
* Make sure that the Spade Lugs fit tightly. Mount
the new Control Assembly on the Lower Gearcase
using the (2) 8-32 x 5/8" Phillips Screws.
* Replace the Motor Housing and then repeat the
Test Procedure outlined above to confirm proper op-
eration. "E
KP - KT - KD 6-Quart Stand Mixer Manual - LIT4176981 ¢ Page 10