Warmer(S); Ot: Brew Station & Upper; Rt: Left Rear, Left Front, Brew Station, & Right Front - Bunn OT Operating & Service Manual

SERVICE (cont.)

Warmer(s)

OT:
Brew Station & Upper
RT:
Left Rear, Left Front, Brew Station, & Right Front
FIG. 8 WARMERS
FIG. 9 WARMERS
Location:
OT: One of the warmers is beneath the brew funnel
and the other is on the top lid, FIG. 8.
RT: These warmers include the one beneath the
brew funnel, the ones on the right and left of the brew
station, and the one above and to the left of the brew
station as viewed from the front, FIG. 9.
Test Procedure:
1. Once the switch has been tested and switch fail-
ure has been eliminated, proceed as follows.
2. Disconnect the brewer from the power source
and remove the #4-40 screws attaching the
warmer being tested.
3. Lift the warmer assembly from the brewer and
invert the warmer making the wire terminals ac-
cessible for testing.
4. Check for continuity from the switch to the black
wire at the warmer element.
If continuity is present as described, proceed to #5.
P1687
IN G
R N
W A ER
RM
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H HE NTE R
HIG DE CA AW AY
T BO IL LES KS
NO US TIB LY RIS
DO CO MB MP T LIQ UID
EP KE TO CO
RE RE /HO ZA RD
FA ILU S FA ILU E HA
AS D FIR
GL S AN
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P1688
5. Check for continuity from the wire terminal of
the white or red wire to the splice or indicator
lamp using the chart below.
If continuity is present as described, proceed to #6.
If continuity is not present as described, refer to the
Wiring Diagrams and check the brewer wiring har-
ness.
6. Check for continuity across the two terminals on
the warmer.
If continuity is present as described, the warmer is
operating properly.
If continuity is not present as described, replace the
warmer.
Removal and Replacement:
1. Remove the #4-40 slotted-head screws holding
the warmer to the brewer
2. Lift the warmer assembly from the brewer.
3. Disconnect both wires from the warmer.
4. Refer to FIG. 10 when reconnecting the wires.
5. Place the new warmer into the brewer and se-
curely attach it using the #4-40 screws.
FIG. 10 WARMER WIRING
MODEL
OT Upper WHI OR RED
OT Brew Station WHI OR RED
RT Left Rear WHI OR RED
RT Left Front WHI OR RED
RT Brew Station WHI OR RED
RT Right Front WHI OR RED
Page 17
WHI or RED (see below)
BLK to Warmer Switch
P1692
to Indicator Lamp
to Indicator Lamp
to Terminal Block
to Terminal Block
to Brew Station Warmer
to Indicator Lamp
to Timer P2
to Left Rear Warmer
to Right Rear Warmer Switch
10021 071700