Bunn G1 User Manual

BUNN
®
G1,G2
G1,G2
& G3
& G3
OPERATING & SERVICE MANUAL
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
10191.0000Q 1/00 ©1995 Bunn-O-Matic Corporation
C
L
EA
N
IN
G
L
E
V
E
R
CLEANING LEVER
GROUND
COFFEE
1. S
elect the desired grind.
2. Lift the lid and pour coffee beans into the hopper.
3. Slip bag under the chute. Rest the bag on the tray.
4. P
ress the start sw
itch.
5. Flip the cleaning lever a few
tim
es as dispensing slow
s.
6. Rem
ove the bag. The grinder w
ill stop autom
atically.
S
T
O
P
T
U
R
K
IS
H
S
P
E
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I
N
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S
P
R
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S
S
O
C
LE
A
NING
LE
V
E
R
CLEANING LEVER
GROUND
COFFEE
S
TO
P
TU
R
KIS
H
S
P
E
C
I
A
L
R
E
G
P
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F
I
N
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E
S
P
R
E
S
S
O
1. Select the de
sired grind
.
2. Lift the lid and pour coffee beans into the h
op
per.
3. Slip bag un
der the chute. R
est the bag on the tray.
4. Press the start sw
itch
.
5. Flip the clean
ing lever a few tim
es as dispensing slows.
6. Rem
ove the bag. The grinder w
ill stop autom
atically.

Bunn G1 Specifications

General

Type	Burr Grinder
Hopper Capacity	1 lb
Power	120V
Material	Stainless Steel
Grind Settings	Coarse to Fine

Summary

Commercial Grinder Warranty

Electrical Requirements

Coffee Grinding

Coffee Grinding Steps

Detailed steps for selecting grind, adding beans, and initiating grinding.

Adjustment

Grind Adjustment Procedure

Detailed procedure for adjusting burrs using the selector knob and screws.

Troubleshooting

General Troubleshooting Advice

General advice on troubleshooting and contacting service.

Troubleshooting (cont.)

Grinder Not Starting: Motor Overload

Addresses motor overload protector as a cause for the grinder not starting.

Service

Component Access Procedures

Details how to access internal components by removing panels.

Service (cont.)

AC Motor and Grind Chamber

AC Motor Reset

Explains how to reset the motor overload protector.

AC Motor Voltage Test

Outlines voltage testing steps for the AC motor.

Service (cont.)

AC Motor Test Continued

Continues AC motor testing, focusing on voltage checks under load.

AC Grind Chamber Component Details

Details removal and inspection of grind chamber components like burrs.

DC Motor & Grind Chamber R&R Continued

Continues the removal and replacement steps for DC motor and grind chamber.

DC Grind Chamber Components & Reassembly

Details removal, inspection, and reassembly of DC grind chamber parts.

Off/On/Start Switch Testing

Rectifier Location and Test

Relay Location and Testing

Relay R&R (120/240V AC)

AC Motor R&R

Detailed steps for removing and replacing the AC motor.

AC Grind Chamber Reassembly

Steps for reassembling the AC grind chamber and its parts.

DC Grind Chamber Component Removal

Steps for removing components of the DC grind chamber.

Off/On/Start Switch R&R

Rectifier R&R

Relay R&R (230V 50Hz)

AC Grind Chamber Component Removal

Steps to remove components related to the AC grind chamber.

Service (cont.)

DC Motor & Grind Chamber Tests

Outlines test procedures for the DC motor and grind chamber.

DC Motor R&R

Detailed steps for removing and replacing the DC motor.

Schematic Wiring Diagram G1, G2 & G3

G1, G2, G3: 120V AC Wiring

Schematic Wiring Diagram G1-MD

G1-MD: 120V AC Wiring

Schematic Wiring Diagram G1A, G2A & G3A

G1A, G2A, G3A: 230/240V AC Wiring