Bunn G1 Operating & Service Manual - page 17
17
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A
C
A
C
SERVICE (cont.)
Removal and Replacement:
1.
Disconnect the wires from the rectifier.
2.
Remove the #10-32 screw securing the rectifier
to the motor mounting bracket.
3.
Remove the rectifier and discard.
4.
Install new rectifier on the rear of the motor
mounting bracket and secure with a #10-32
screw.
5.
Refer to Fig. 13 and reconnect the wires.
BLK from Motor (+)
BLU to BLU from Motor (AC)
WHI from Main Harness (AC)
RED from Motor (-)
FIG. 13 RECTIFIER TERMINALS
P1381
RECTIFIER - G1MD ONLY
CLE
ANIN
G LEVER
CLEANING LEVER
GR
OUND
COFFEE
1. Select the desired grind.
2. Lift th
e lid and pour coffee beans into the hopper.
3. Slip bag under th
e chute. Rest the bag on
the tray.
4. Press the start switch.
5. Flip the cleaning lever a few times as dispensing
slow
s.
6. Remove the bag. The grinder will stop
automatically.
ST
OP
TU
R
K
IS
H
SP
EC
IA
L
R
E
G
P
E
R
C
E
L
E
C
P
E
R
C
A
U
TO
M
AT
IC
DRIP
FINE
ESP
RE
SS
O
FIG. 12 RECTIFIER
P1706
Location:
The rectifier is located inside the grinder
housing mounted on the rear of the motor mount-
ing bracket.
Test Procedures:
1.
Disconnect the grinder from the power source.
2.
Remove the red wire and the black wire from
the rectifier.
3.
Check the voltage across the (+) and (-) termi-
nals on the rectifier with a voltmeter. Connect
the grinder to the power source and start the
grinder motor. The indication must be approxi-
mately 108 volts dc.
4.
Disconnect the grinder from the power source.
If voltage is present as described, the rectifier is
operating properly.
If voltage is not present as described, refer to the
grinder wiring diagram and check the grinder wir-
ing harness.