KitchenAid KP - KitchenAid Mixer Troubleshooting Problem Guide

KitchemA iad’
6-Quart Stand Mixer Manual LIT4176981 © 2002 KitchenAid .
B PROBLEM GUIDE - The following list of Service PROBLEMS are reviewed with the likely CAUSE and most
- "probable CORRECTION provided below to assist the Professional Mixer Technician with the diagnosis and
corrective action required to make a successful repair.
* PROBLEM: Repeated Worm Gear failures.
* CAUSE: Galled Worm Gear.
* CORRECTION: Replace Worm Gear and Attachment Gear.
* PROBLEM: Switch lever clicks, but Mixer will not run or buzz.
* CAUSE: Open electrical circuit. Faulty Plug. Faulty attachment cord. Loose wire leads. Open TCO.
* CORRECTION: Determine Open Contact and replace or repair.
* PROBLEM: Mixer will not shut off with ON/OFF Switch
* CAUSE: The Mixer ON/OFF Switch is closed. Bad Switch Lever.
* CORRECTION: Replace Control Assembly.
* PROBLEM: Beater strikes Bow! or too much clearance between Beater and Bowl..
* CAUSE: Adjusting screw at rear of Column improperly set.
* CORRECTION: Turn the adjusting screw slightly to right or left to adjust clearance. Clearance should be 1/
16" the thickness of a dime.
* PROBLEM: Planetary turns--but Beater does not revolve.
* CAUSE: Pinion Gear or Gear Drive Pin is broken.
* CORRECTION: Remove Planetary and replace Pinion Gear or Gear Drive Pin.
e PROBLEM: Mixer runs with raspy, bumpy noise at Planetary.
* CAUSE: Lower Gear Case internal Ring Gear teeth are worn or broken.
E e CORRECTION: Remove the Planetary and Gear Case Cover.
` The complete Gear Case Assembly must be replaced.
* PROBLEM: Switch knob clicks, but Mixer will not run or buzz.
* CAUSE: Open Electrical Circuit:
* CORRECTION: Progressively disassemble the Speed Control mechanism, plus the motor and perform the
following checks until the open circuit is found. Look for: - Faulty plug. - Fauity Attachment Cord. - Bad
connection in Speed Control . - Bad connection between Field and Cord. - Open circuited Armature.-
Open circuited fFeld. - Correct brush orientation. - Open TEO Fuse.
e PROBLEM: Electrical shock to operator.
* CAUSE: Bare lead touching inside of housing.
* CORRECTION: Pull the plug, turn the switch on and check for a ground with a Test Lamp or Volt Meter.
Touch one prong of the test lamp to a prong of the plug and the other prong to an unpainted spot on the
housing. If the lamp lights the mixer is grounded. Examine all the wiring in the order of its accessibility,
until the grounded lead is found. If mixer has radio interference condenser wired between stator screw
and power cord - remove and discard.
* PROBLEM: Bad sparking at motor brushes.
* CAUSE: Worn motor brushes.
* CORRECTION: Replace Motor.
. *PROBLEM: Faulty Armature or shorted Motor Field.
* CAUSE: Motor has internal short.
* CORRECTION: Replace Motor.
* PROBLEM: Mixer runs on one Speed only.
* CAUSE: Speed control.
¢ CORRECTION: Replace the Control Board
P. e PROBLEM: Mixer runs for a short time and then shuts off.
* CAUSE: Hall Effect is bad. l
e CORRECTION: Replace the Hall Effect.
KP - KT - KD 6-Quart Stand Mixer Manual - LIT4176981 * Page 14