SERVICE (cont.)

UNSWEET/OFF/SWEET SWITCH (Sweetner Option)

P3034

FIG. 14 UNSWEET/OFF/SWEET SWITCH

Location:

The UNSWEET/OFF/SWEET switch is located in the front of the hood, above and to the left of the brew funnel.

Test Procedure:

1.Disconnect the brewer from the power source.

2.With a voltmeter, check the voltage across the black wire and white wire on the selector switch.

3.Connect the brewer to the power source. The in- dication must be:

a)120 volts ac for two wire 120 volt models.

b)230 volts ac for two wire 230 volt models.

c)100 volts ac for two wire 100 volt models.

4.Disconnect the brewer from the power source.

If voltage is present as described, proceed to #5.

If voltage is not present as described, refer to the Wir- ing Diagrams and check the wiring harness.

5.Disconnect the black and white wires from the center terminals.

6.Disconnect the brown/white and white/violet wires from the right side terminals.

7.Check for continuity across the center and right terminals in rows one through four when the switch is in the "SWEET” position.

If continuity is present as described, replace the wires on the right side and proceed to #8.

If continuity is not present as described, replace the switch.

8.Disconnect the white/violet wires on the left side terminal.

9.Check for continuity across the center and left side terminals in rows one through four when the switch is in the "UNSWEET” position.

If continuity is present as described, replace the wires the switch is operating properly.

If continuity is not present as described, replace the switch.

Removal and Replacement:

1.Remove the wires from the switch terminals.

2.Compress the clips inside the hood and gently push the switch through the opening.

3.Push the new switch into the opening and spread the clips to hold the switch captive in the hood.

4.Refer to FIG. 15 when reconnecting the wires.

 

BLK to Power Cord

WHT/GRN to

Brew Sol

BRN/WHI to

 

Sweetener Sol

WHT/VIO

 

to Brew

 

Timer TL1

 

 

WHT to Power Cord

 

P1763

 

FIG.15 UNSWEET/OFF/SWEET

 

SWITCH TERMINALS

Page 23

37236 050305

 

Page 22 Page 24
Page 23
Image 23
Bunn TB3Q-LP service manual UNSWEET/OFF/SWEET Switch Sweetner Option
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TB3Q, TB3Q-LP specifications

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