Bunn-O-Matic LPG-2 User manual

GRINDERS

Includes: MHG, FPG,

FPG-2, LPG-2, G1, G2, G3,

G9, G9-2 & G9-2T DBC

SERVICE & REPAIR MANUAL

BUNN-O-MATIC CORPORATION

POST OFFICE BOX 3227

SPRINGFIELD, ILLINOIS 62708-3227

PHONE: (217) 529-6601 FAX: (217) 529-6644

To ensure you have the latest revision of the Operating Manual, or to view the Illustrated Parts

Catalog, Programming Manual, or Service Manual, please visit the Bunn-O-Matic website, at

www.bunn.com. This is absolutely FREE, and the quickest way to obtain the latest catalog and

manual updates. For Technical Service, contact Bunn-O-Matic Corporation at 1-800-286-6070.

preliminary copy

NOTICE

The Service and Repair manual for the BUNN Grinder family, is currently in progress.

For your convenience, we have provided Electrical Schematic Diagrams on the following pages.

Thank you for your patience.

2

preliminary copy

SCHEMATIC WIRING DIAGRAM

G9-2 DBC, G9-2T DBC W/SMART FUNNEL™

N

W

H

I

B

L

K

L1

LEFT GATE

LIMIT THERMOSTAT

SOL

WHI/ORA

WHI/GRN

WHI/YEL

BLK

WHI

RED/BLK

J1-6

J8-3

J8-1

J6-10

J6-5

J6-1

CONTROL PC BOARD

COIL

RELAY

RIGHT GATE

1

11

SHIELD

FUNNEL SENSOR

WHI/GRN

WHI/VIO

SWITCH UNIT ASSY

B2

C4

C5

C6

A2

A1

C3

C2

C1

GRINDER MOTOR

M

WHI

BLK

WHI/BLU

RELAY

CONTACTS

Switch Unit Assembly Codes

A1 Grind

A2 Stop

B2 Hidden Button "Right"

C1 Large Batch Size "Left"

C2 Medium Batch Size "Left"

C3 Small Batch Size "Left"

C4 Large Batch Size "Right"

C5 Medium Batch Size "Right"

C6 Small Batch Size "Right"

120 OR 230 VOLTS AC

2 WIRE

SINGLE PHASE

50/60 HZ

WIRING DIAGRAMS

3

preliminary copy

SCHEMATIC WIRING DIAGRAM

G9-2 DBC, G9-2T DBC W/SMART FUNNEL™

N

W

H

I

B

L

K

L1

LEFT GATE

LIMIT THERMOSTAT

SOL

WHI/ORA

WHI/GRN

WHI/YEL

BLK

WHI

RED/BLK

J1-6

J8-3

J8-1

J6-10

J6-5

J6-1

CONTROL PC BOARD

COIL

RELAY

RIGHT GATE

1

11

SHIELD

FUNNEL SENSOR

WHI/GRN

WHI/VIO

SWITCH UNIT ASSY

B2

C5

A3

A2

A1

C3

C2

GRINDER MOTOR

M

WHI

BLK

WHI/BLU

RELAY

CONTACTS

120 OR 230 VOLTS AC

2 WIRE

SINGLE PHASE

50/60 HZ

Switch Unit Assembly Codes

A1 On/Off

A2 Grind

A3 Stop

B2 Hidden Button “Right”

C2 Hot Coffee “Full”

C3 Hot Coffee “Half”

C5 Iced Coffee

WIRING DIAGRAMS

4

preliminary copy

SCHEMATIC WIRING DIAGRAM

G9-2TB DBC W/SMART FUNNEL™

N

W

H

I

B

L

K

L1

LEFT GATE

LIMIT THERMOSTAT

SOL

WHI/ORA

WHI/GRN

WHI/YEL

BLK

WHI

RED/BLK

J1-6

J8-3

J8-1

J6-10

J6-5

J6-1

CONTROL PC BOARD

COIL

RELAY

RIGHT GATE

1

11

SHIELD

FUNNEL SENSOR

WHI/GRN

WHI/VIO

SWITCH UNIT ASSY

A3

C4

C5

C6

A2

A1

C3

C2

C1

GRINDER MOTOR

M

WHI

BLK

WHI/BLU

RELAY

CONTACTS

Switch Unit Assembly Codes

A1 Grind

A2 Stop

A3 On/Off

C1 Large Batch Size "Left"

C2 Medium Batch Size "Left"

C3 Small Batch Size "Left"

C4 Large Batch Size "Right"

C5 Medium Batch Size "Right"

C6 Small Batch Size "Right"

100 VOLTS AC

2 WIRE

SINGLE PHASE

50 HZ

WIRING DIAGRAMS

5

preliminary copy

SCHEMATIC WIRING DIAGRAM MHG

N

B

L

K

W

H

I

L1

RIGHT GATE

LEFT HOPPER SENSOR

LIMIT

THERMOSTAT

LIMIT

THERMOSTAT

WHI/YEL WHI/YEL

WHI/GRN

WHI/ORN WHI/ORN

YEL

ORN

YEL

ORN

BLK

WHI WHI

WHI

J5-5

J5-1

J12-1

J9-10

J9-5

J9-1

CONTROL PC BOARD

DISPLAY BOARD

RELAY

LEFT GATE

RIGHT HOPPER SENSOR

16

1

STATIC SHIELD

SWITCH UNIT ASSY

A2

C5

C6

C4

B2

B1

D3

D2

D1

C3

C2

C1

A1

GRINDER MOTOR

WHI

BLK

WHI/BLU

RELAY

CONTACTS

100 VOLTS AC,

120 VOLTS AC,

240 VOLTS AC

2 WIRE

SINGLE PHASE

50/60 HZ

Switch Unit Assembly Codes

A1 Grind

A2 Stop

B1 Hidden Button "Left"

B2 Hidden Button "Right"

C1 Large Batch Size "Left"

C2 Medium Batch Size "Left"

C3 Small Batch Size "Left"

C4 Large Batch Size "Right"

C5 Medium Batch Size "Right"

C6 Small Batch Size "Right"

D1 "Digital" Left Hidden Button

D2 "Brewer" Center Hidden Button

D3 "Control" Right Hidden Button

FUNNEL SENSOR

VIO

J10-4

J10-1

J8-4

J8-1

ORN

YEL

GRN

BLU

SOL

COIL

M

GRN

J16-5

J16-1

MEMORY

BOARD

RED

WHI

GRN

BLK

P1

P2

P3

P4

P1, P2, P3 & P4 ARE

PINS OF A POLARIZED

FOUR-PIN CONNECTOR

WIRING DIAGRAMS

6

preliminary copy

BUNN-O-MATIC CORPORATION

SCHEMATIC WIRING DIAGRAM

LPG-2E, LPGB-2E

NL1

BLK

RED

WHI

100 VOLTS AC

120 VOLTS AC

2 WIRE

SINGLE PHASE

60 HZ

GRN

3

AMP

2

3

4

5

6

1

7

8

9

10

TIMER ASSY.

(Hopper Slide

Gate Timer

Dial Wiring)

Right - Brown

Left - Orange

YEL

WHI

BLU

YEL

WHI/BLK

BLK

RED

VIO

ORA

OFF/ON/START

SWITCH

RED

GRN

SELECTOR

SWITCH

WHI

RED

WHI

BLK

GRINDER

SLIDE GATES

RT

SOL

LT

SOL

RED RED

M

WIRING DIAGRAMS

7

preliminary copy

WIRING DIAGRAMS

8

preliminary copy

BLK

WHI

RED

BUNN-O-MATIC CORPORATION

SCHEMATIC WIRING DIAGRAM

LPG & LPG2

NL1

B

L

K

P1

2

3

4

5

6

1

RED

WHI/BLK

BLK

WHI/BLU

WHI/BRN

WHI

GRN

RED

WHI/BLK

BLK

WHI/BLU

WHI/BRN

WHI

BLK

RED

WHI/BRN

WHI/BLU

1

2

3

4

5

P2

BLK

RED

WHI/BRN

WHI/BLU

DC

MOTOR

BLK

WHI

RED

4

1

2

3

P3

GREEN

3

AMP

TIMER

BLK

W

H

I

120 VOLTS AC

2 WIRE

SINGLE PHASE

60 HZ

WIRING DIAGRAMS

9

preliminary copy

BLK

WHI

RED

BUNN-O-MATIC CORPORATION

SCHEMATIC WIRING DIAGRAM

LPG-A

L2L1

B

L

K

P1

2

3

4

5

6

1

RED

WHI/BLK

BLK

WHI/BLU

WHI/BRN

WHI

GRN

RED

WHI/BLK

BLK

WHI/BLU

WHI/BRN

WHI

BLK

RED

WHI/BRN

WHI/BLU

1

2

3

4

5

P2

BLK

RED

WHI/BRN

WHI/BLU

DC

MOTOR

BLK

WHI

RED

4

1

2

3

P3

GRN/YEL

3

AMP

TIMER

BLK

R

E

D

230 VOLTS AC

2 WIRE

SINGLE PHASE

50/60 HZ

WIRING DIAGRAMS

10

preliminary copy

BLK

WHI

RED

BUNN-O-MATIC CORPORATION

SCHEMATIC WIRING DIAGRAM

LPG W/Capacitor

L1

P1

2

3

4

5

6

1

2

RED

WHI/BLK

BLK

WHI/BLU

WHI/BRN

WHI

GRN

RED

WHI/BLK

BLK

WHI/BLU

WHI/BRN

WHI

BLK

RED

WHI/BRN

WHI/BLU

1

2

3

4

5

P2

BLK

RED

WHI/BRN

WHI/BLU

DC

MOTOR

BLK

WHI

RED

4

1

2

3

P3

GREEN

TIMER

BLK

N

W

H

I

120 VOLTS AC 2 WIRE

SINGLE PHASE 60 HZ

P4

+

_

WIRING DIAGRAMS

11

preliminary copy

BLK

WHI

RED

BUNN-O-MATIC CORPORATION

SCHEMATIC WIRING DIAGRAM

LPG-B

NL1

B

L

K

P1

2

3

4

5

6

1

RED

WHI/BLK

BLK

WHI/BLU

WHI/BRN

WHI

GRN

RED

WHI/BLK

BLK

WHI/BLU

WHI/BRN

WHI

BLK

RED

WHI/BRN

WHI/BLU

1

2

3

4

5

P2

BLK

RED

WHI/BRN

WHI/BLU

DC

MOTOR

BLK

WHI

RED

4

1

2

3

P3

GREEN

3

AMP

TIMER

BLK

W

H

I

100 VOLTS AC

2 WIRE

SINGLE PHASE

50-60 HZ

WIRING DIAGRAMS

12

preliminary copy

WHI/VIO

WHI/BLU

WHI/ORA

SCHEMATIC WIRING DIAGRAM G1A, G2A & G3A

GRN/YEL

L1

L2

SW1

BLK

WHI/RED

SW2

N.O.

M

L1

L2

RED (230V)

RED/BLK (240V)

RED (230V)

RED/BLK (240V)

K-4

K-6

230 VOLTS AC

240 VOLTS AC

2 WIRE

SINGLE PHASE

K

1 or A 0 or B

K-2 or K-7

K-8 or K-9

WHI/VIO

WHI/BLU

WHI/ORA

1 or A

GRN

L1

N

SW1

BLK WHI/RED

SW2

K

0 or B

M

L1 L2

120 VOLT AC

2 WIRE

SINGLE PHASE 60 HZ

WHI

K-2 or K-7

K-8 or K-9

K-6

K-4

SCHEMATIC WIRING DIAGRAM G1, G2 & G3

WIRING DIAGRAMS

13

preliminary copy

WHI/GRN

BLK

K1

WHI/BLU

M

L2L1

120 VOLTS AC

2 WIRE

SINGLE PHASE

60 HZ

L1 N

GREEN

K1 N.O.

SCHEMATIC WIRING DIAGRAM G9

TIMER

WHI/RED

WHI/YEL

WHI/ORA

WHI

WHI/RED

OPTIONAL KEY SW

54321

W

H

I

/

O

R

A

ORA

URN

CARAFE

WHI/GRN

1

BLK

K1

WHI/BLU

M

L2L1

120 VOLTS AC

2 WIRE

SINGLE PHASE

60 HZ

L1

N

GREEN

K1 N.O.

SCHEMATIC WIRING DIAGRAM

G9-URN/CARAFE

TIMER

3245

WHI/RED

WHI/YEL

WHI/ORA

WHI

WHI/RED

TAN

MULTI-SET SW

(OPTIONAL)

GRN

YEL

BRN

ORA

GRN

YEL

WIRING DIAGRAMS

14

preliminary copy

WHI/GRN

BLK

K1

WHI/BLU

M

L2L1

230 VOLTS AC

2 WIRE + GND

SINGLE PHASE

50 HZ

L1 L2

GREEN

K1 N.O.

SCHEMATIC WIRING DIAGRAM G9A HD

TIMER

WHI/RED

WHI/YEL

WHI/ORA

RED/BLK

WHI/RED

54321

OPTIONAL POWER

INDICATOR LIGHT

WIRING DIAGRAMS

15

preliminary copy

4 3

WHI/GRN

1

BLK

WHI/BLU

L2

L1

120 VOLTS AC

2 WIRE

SINGLE PHASE

60 HZ

L1 N

GREEN

K1 N.O.

SCHEMATIC WIRING DIAGRAM G9

TIMER

3 2 4 5

WHI/RED

WHI/YEL

WHI/ORA

WHI

WHI/RED

GRY

1 2

OPTIONAL

MULTI-SET SW

OPTIONAL BREWER

INTERFACE CONNECTOR

PNK

TAN

ORA

PNK

OPTIONAL KEY SW

W

H

I

/

O

R

A

K1

M

120 VOLTS AC

2 WIRE

SINGLE PHASE

60 HZ

4 3

WHI/GRN

1

BLK

WHI/BLU

M

L2 L1

L1

N

GREEN

K1 N.O.

SCHEMATIC WIRING DIAGRAM G9

TIMER

3 2 4 5

WHI/RED

WHI/YEL

WHI/ORA

WHI

WHI/RED

GRY

1 2

OPTIONAL BREWER

INTERFACE CONNECTOR

PNK

TAN

OPTIONAL KEY SW

WHI/ORA

K1

WIRING DIAGRAMS

16

preliminary copy

BLU

VIO

YEL

GRY

TAN

ORA

RED/BLK

WHI

WHI/GRN

WHI/ORA

WHI/YEL

RED/BLK

BLK

WHI/RED

WHI/BLU

M

L2L1

WHI/BLU

WHI/BLK

YEL

230 VOLTS AC

2 WIRE

SINGLE PHASE

50 HZ

L1 L2

K1 N.O.

SCHEMATICWIRINGDIAGRAMG9-2A HD

OFF/ON/START

SW

HOPPER

SELECTOR SW

TAN

1

8

TIMER

P1 P4

1

8

GRINDER INTERFACE

CONNECTOR

GRY

PNK

4

1

2

3

BLU

GRN/YEL

OPTIONAL

MULTI-SET SW

BLU

PNK

BLK

GRN

RT

LT

BLK

WHI/RED

K1

SOL

1

RT

SOL

2

LT

SNUBBER

WHI/BLK

WIRING DIAGRAMS

17

preliminary copy

WIRING DIAGRAMS

18

preliminary copy

WIRING DIAGRAMS

BLK

WHI

RED

BUNN-O-MATIC CORPORATION

SCHEMATIC WIRING DIAGRAM

FPG

NL1

RED

WHI/BLK

BLK

WHI/BLU

WHI/BRN

WHI

RED

WHI/BLK

BLK

WHI/BLU

WHI/BRN

WHI

GRN

BLK

SM

MED

LG

RED

WHI/BRN

WHI/BLU

1

2

3

4

5

P2

BLK

RED

WHI/BRN

WHI/BLU

DC

MOTOR

BLK

WHI

RED

4

1

2

3

P3

GREEN

3

AMP

TIMER

SELECT SW.

BLK

120 VOLTS AC

2 WIRE

SINGLE PHASE

60 HZ

White Strip-Tac Plus

Black Ink

Finished Size: 4.5" x 5.0"

?0% Reduction

1

2

3

A

W

H

I

B

L

K

1

2

3

4

5

P2

6

BLK

WHI

RED

BUNN-O-MATIC CORPORATION

SCHEMATIC WIRING DIAGRAM

FPGA

NL1

RED

WHI/BLK

BLK

WHI/BLU

WHI/BRN

WHI

GRN

BLK

SM

MED

LG

RED

WHI/BRN

WHI/BLU

1

2

3

4

5

P2

BLK

RED

WHI/BRN

WHI/BLU

DC

MOTOR

BLK

WHI

RED

4

1

2

3

P3

GREEN

3

AMP

TIMER

SELECT SW.

BLK

230 VOLTS AC

2 WIRE

SINGLE PHASE

50/60 HZ

1

2

3

A

R

E

D

B

L

K

NOT A PURCHASED SCHEMATIC

FOR REFERENCE ONLY

Bunn-O-Matic LPG-2 User manual

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Bunn-O-Matic LPG-2 User manual

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