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Bunn OL User Guide

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Page 12
WAR
NING
!
HI
GH
 H
EA
T W
AR
ME
R
DO
 N
OT
 B
OI
L D
EC
AN
TE
R 
DR
Y
KE
EP
 C
OM
BU
ST
IB
LE
S 
AW
AY
FA
ILU
RE
 TO
 C
OM
PL
Y 
RI
SK
S
GL
AS
S F
AI
LU
RE
/H
OT
 LIQ
UI
D
BU
RN
S 
AN
D F
IR
E H
AZ
AR
D
CA
UT
ION
DIS
CA
RD
 DE
CA
NT
ER
IF:
. CRACKED
. SCRATCHED
. BOILED DRY 
. HEATED WHEN EMPTY
. USED ON HIGH FLAME
. OR EXPOSED ELECTRIC
  ELEMENTS
FA
ILU
RE
 TO
 CO
MP
LY
 RI
SK
S I
NJ
UR
Y
PN
: 6
58
19
85
 BU
NN
-O
-M
AT
IC 
CO
RP
OR
AT
ION
FU
NN
EL
 CO
NT
EN
TS
    
    
AR
E H
OT
!
CAUTION
DIS
CA
RD
 DE
CA
NT
ER
IF:
. C
RA
CK
ED
. S
CR
AT
CH
ED
. B
OIL
ED
 DR
Y 
. H
EA
TE
D W
HE
N E
MP
TY
. U
SE
D O
N H
IGH
 FL
AM
E
. O
R E
XP
OS
ED
 EL
EC
TR
IC
  E
LE
ME
NT
S
FA
ILU
RE
 TO
 CO
MP
LY
 RIS
KS
 IN
JU
RY
PN
: 6
58
19
85
 BU
NN
-O
-M
AT
IC 
CO
RP
OR
AT
ION
FU
NN
EL
 CO
NT
EN
TS
        A
RE
 HO
T
!
FIG. 1 ACCESS PANELS
SERVICE
This section provides procedures for testing and replacing various major components used in this brewer
should service become necessary.  Refer to Troubleshooting for assistance in determining the cause of any
problem.
Component Access
WARNING - Disconnect the brewer from the power
source before the removal of any panel or the replace-
ment of any component.
The control thermostat, solenoid valve and relay
are located under the top cover or top warmer hous-
ing, FIG. 1, attached with three #8-32 slotted-head
screws.
The base warmer(s), switch(es), indicator lamp,
start switch, tank "keep warm" heater and terminal
block are located in the base.  Access is gained by
removing the rear panel, FIG. 1 attached with two #8-
32 slotted-head screws
The limit thermostat and tank heater are located
on the tank assembly.  Access is gained by removing
the rear panel, FIG. 1 attached with two #8-32 slotted
head screws.
On the model OL, the upper warmer, switch, and
associated indicator lamp are located on the remov-
able top warmer housing, FIG. 1.
WARNING - Inspection, testing, and repair of electri-
cal equipment should be performed only by qualified
service personnel.  The brewer should be disconnected
from the power source when servicing, except when
electrical tests are required and the test procedure
specifically states to connect the brewer to the power
source.
Contents
Control Thermostat ............................................... 13
Warmer(s)
OL: 
Brew Station & Upper .............................................
14
RL: 
Left Rear, Left Front, Brew Station, & Right Front ..
14
RL: 
Right Rear Three Heat ............................................
15
Warmer Switch(es)
OL:
 On/Off Brew Station & Upper ..................................
16
RL:
 On/Off Brew Station ................................................
16
RL:
 Left Rear, Left Front, & Right Front Rotary .............
17
RL:
 Right Rear Three Heat Rotary .................................
18
Start Switch .......................................................... 19
Indicator Lamp(s) ................................................. 20
Limit Thermostat .................................................. 21
Solenoid Valve ...................................................... 22
Relay..................................................................... 23
Tank Heater ........................................................... 24
Over Flow Safety Switch ....................................... 25
Wiring Schematics...............................................  26
P1712
P1713
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