Bunn TB3Q-LP - Manual (Page 16)

Page 16
SERVICE (cont.)
START SWITCHES
Location:
The start switch is located in the front of the hood,
above and to the right of the brew funnel.
Test Procedure:
1. Disconnect the brewer from the power source.
2. Remove the wires from all four terminals.
3. Check for continuity across the two terminals on
the right side of the switch when it is held in the
lower position. Continuity must not be present
across these terminals in the upper position.
4. Check for continuity across the two terminals on
the left side of the switch when it is held in the
lower position. Continuity must not be present
across these terminals in the upper position.
If continuity is not present as described, replace the
switch.
If continuity is present as described, reconnect the
wires, the switch is operating properly.
If continuity is not present as described, replace the
switch.
NOTE: No continuity will show across the left terminals
of the lighted switch since the light is neon.
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. 16-2 when reconnecting the wires.
FIG. 16-1 START SWITCHES
FIG. 16-2 START SWITCH TERMINALS
WHI/YEL
to Timer T5
P/N 37079.0000 P/N 37080.0001
P/N 37079.0000
P/N 37080.0001
Non Lighted Green ready light
WHI/ORN
to Timer T3
WHI/YEL
to Timer T5
WHI/ORN
to Timer T3
BLU/BLK
to T. Stat
BLK
to T. Stat
41722 070209
P/N 37079.0000
WHI/YEL
to Timer T5
WHI/ORN
to Timer T3
RED
GREEN