Bunn MHG Service & Repair Manual page 64

WIRING DIAGRAMS
LI N
MOTOR RELAY
GRY
LEFT GATE RELAY
GRY
RIGHT GATE RELAY
GRY
LIMIT
THERMOSTAT
WHT
LIMIT
THERMOSTAT
P1
WHT WHT
100 VOLTS AC, 120 VOLTS AC,
240 VOLTS AC
2 WIRE + Gnd
SINGLE PHASE, 50/60HZ
45151.0000A 11/11 ©2011 BUNN-O-MATIC CORPORATION
SCHEMATIC WIRING DIAGRAM
MHG with WD CBA
K1
VIO
ORG
K2
K3 YEL
RIGHT GATE
P2 K3
WHT/YEL WHT/YEL
SOL
GRN
LEFT GATE
K2
P3
WHT/ORG WHT/ORG
SOL
GRN
P4
GRINDER
MOTOR
K1
MTR WHT/BLU
WHT
WHT
BLK
LINE
T1
LOAD
RIGHT HOPPER
COIL
LEFT HOPPER
COIL
FUNNEL COIL
BLK
BLK
BLK
BLK
White Strip-Tac Plus
Black Ink
Finished Size: 4.0" x 4.25"
50% Reduction
64
CONTROL PC BOARD
J1 SWITCH UNIT ASSEMBLY CODES
RED
1
RED A1 GRIND
VIO
A2 STOP
GRY
ORG
B1 HIDDEN BUTTON "LEFT"
5
YEL
B2 HIDDEN BUTTON "RIGHT"
8
C1 LARGE BATCH SIZE "LEFT"
C2 MEDIUM BATCH SIZE "LEFT"
C3 SMALL BATCH SIZE "LEFT"
C4 LARGE BATCH SIZE "RIGHT"
J12
C5 MEDIUM BATCH SIZE "RIGHT"
YEL
1
C6 SMALL BATCH SIZE "RIGHT"
YEL
D1 "DIGITAL' LEFT HIDDEN BUTTON
ORG
D2 "BREWER" CENTER HIDDEN BUTTON
5
ORG
D3 "CONTROL" RIGHT HIDDEN BUTTON
VIO
VIO
9
J6
1
4
J19
1 5 10 16
SWITCH UNIT ASSY
STATIC
SHIELD
41545 111711