Welbilt FB081TF, Service Manual

Page: 68 / 96

68 Part Number REV00 04/08/2020
Component Check Procedures Section 7
Beverage Components
BLENDER STEP MOTOR
Function
Raises and lowers the blender blade to provide consistent
mixing of ingredients.
Specification
5 VDC from Blender Board
Check Procedure
1. Disconnect the connector (MTA4), terminals TP12B,
TP13B, TP14A and TP13A on the top of Blender Board.
The Blender Board is located on the left side of the
machine near the the Blender Assembly. See “Blender
Control Board” on page 67.
2. Check for 5 VDC across XXX.
• Open (OL) = Replace motor.
• Resistance = Motor windings are good.
3. Check rotor for excessive play or binding.
4. Test home position switch.
5. Test door switch(es).
6. Replace Blender Board.
BLENDER MOTOR
Function
Mixes ingredients to maintain a consistent product.
Specification
120V/60Hz or 220V/50Hz
Check Procedure
Use a voltmeter/ohm meter to check motor operation.
1. Disconnect the Blue and White wires from the Blender
motors. Blender Board is located on the back of the
Blender Assembly.
• Check resistance across the blender motor
leads.
• Open (OL) = Replace motor.
• Resistance = 95 ohms motor is good.
2. Check rotor for excessive play or binding.
3. Test capacitor.
4. Test home position switch.
5. Verify relay is closed/powered - if not test door
switches.
6. Replace Blender Board.