Bunn Coffee Maker HW2 Parts Diagram

BUNN

®

HW2

HW2A

ILLUSTRATED PARTS CATALOG

Designs, materials, weights, specifications, and dimensions for equipment or replacement parts

are subject to change without notice.

BUNN-O-MATIC CORPORATION

POST OFFICE BOX 3227

SPRINGFIELD, ILLINOIS 62708-3227

PHONE: [phone] FAX: [phone]

28888.0000 06/04 ©1998 Bunn-O-Matic Corporation www.bunnomatic.com

BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY

Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows:

1) All equipment other than as specified below: 2 years parts and 1 year labor.

2) Electronic circuit and/or control boards: parts and labor for 3 years.

3) Compressors on refrigeration equipment: 5 years parts and 1 year labor.

4) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis:
parts and labor for 3 years or 30,000 pounds of coffee, whichever comes first.

These warranty periods run from the date of installation BUNN warrants that the equipment manufactured by it
will be commercially free of defects in material and workmanship existing at the time of manufacture and appearing
within the applicable warranty period. This warranty does not apply to any equipment, component or part that
was not manufactured by BUNN or that, in BUNN’s judgment, has been affected by misuse, neglect, alteration,
improper installation or operation, improper maintenance or repair, damage or casualty. This warranty is conditioned
on the Buyer 1) giving BUNN prompt notice of any claim to be made under this warranty by telephone at (217)
529-6601 or by writing to Post Office Box 3227, Springfield, Illinois 62708-3227; 2) if requested by BUNN,
shipping the defective equipment prepaid to an authorized BUNN service location; and 3) receiving prior
authorization from BUNN that the defective equipment is under warranty.

THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR ORAL,
EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHER
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of BUNN

are not authorized to make modifications to this warranty or to make additional warranties that are binding on
BUNN. Accordingly, statements by such individuals, whether oral or written, do not constitute warranties and
should not be relied upon.

If BUNN determines in its sole discretion that the equipment does not conform to the warranty, BUNN, at its
exclusive option while the equipment is under warranty, shall either 1) provide at no charge replacement parts
and/or labor (during the applicable parts and labor warranty periods specified above) to repair the defective
components, provided that this repair is done by a BUNN Authorized Service Representative; or 2) shall replace
the equipment or refund the purchase price for the equipment.

THE BUYER’S REMEDY AGAINST BUNN FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE SALE
OF THIS EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED, AT BUNN’S
SOLE OPTION AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND.

In no event shall BUNN be liable for any other damage or loss, including, but not limited to, lost profits, lost sales,
loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of substitute
equipment, facilities or services, or any other special, incidental or consequential damages.

2

28888 061303

TABLE OF CONTENTS

ELECTRICAL AND OPERATING CONTROLS ............................................................................................................................... 14

HOUSING AND COVERS ............................................................................................................................................................... 4

NUMERICAL INDEX .................................................................................................................................................................... 16

STRAINER/FLOW CONTROL......................................................................................................................................................... 8

TANK AND COMPONENTS............................................................................................................................................................ 6

TANK FAUCET............................................................................................................................................................................. 12

THERMOSTAT AND LIQUID LEVEL CONTROL ........................................................................................................................... 10

3

28888 060700

BUNN

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HOUSING AND COVERS

HW2

HW2A

1

5

6

7

8

9

10

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11

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15 16 17

14

4

P1531

28888 101701

HOUSING AND COVERS

ITEM PART NO. QTY. DESCRIPTION

1 02506.0000 1 Lid, Top (SST)

02506.0001 1 Lid, Top (BLK)

01303.0000 2 Screw, #4-40 x .50"

2 02510.0001 1 Housing (SST)(Also order item 3)

02510.0002 1 Housing (BLK)(Also order item 3)

3 00657.0000 1 Decal, BUNN HOT WATER

4 00917.0000 16 Clip, "J" Type, #8-32

5 02504.0000 1 Panel (SST)

02504.0001 1 Panel (BLK)

01311.0000 4 Screw, #8-32 x .25"

6 28918.0000 1 Panel W/Decals (SST)(Includes item 8. Also order item 7 for Model HW2)

28918.0001 1 Panel W/Decals (BLK)(Includes item 8. Also order item 7 for Model HW2)

01311.0000 4 Screw, #8-32 x .25"

7 10261.0000 1 Decal, ELECTRICAL SCHEMATIC (HW2 only)

8 00831.0000 1 Decal, ELECTRICAL WARNING

9 02508.0000 1 Panel (SST)(HW2 only. Also order item 10)

02508.0004 1 Panel (BLK)(HW2 only. Also order item 10)

02508.0002 1 Panel (HW2A only)

01311.0000 4 Screw, #8-32 x .25"

10 00656.0000 1 Decal, PLUMBING CODE

11 02505.0000 1 Panel (SST)

02505.0001 1 Panel (BLK)

01311.0000 4 Screw, #8-32 x .25"

12 02507.0000 1 Plate, Bottom

13 25137.0002 4 Foot, Rubber

00970.0000 4 Nut, KEPS #8-32

14 02497.0000 1 Drip Tray Kit (Includes items 15 thru 17)

15 02546.0000 1 Cover

16 02545.0000 1 Drip Tray

17 02547.0000 4 Foot, Rubber (Early models)

34466.0000 4 Foot, Rubber

01315.0000 4 Screw, Truss Head #8-32 x .38"

Late Models

5

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BUNN

®

TANK AND COMPONENTS

12 7 9 10 11

HW2

HW2A

15

16

22

21

20

23

19

18

17

11

13

8

6

5

4

3

1

2

P1532

6

28888 101701

TANK AND COMPONENTS

ITEM PART NO. QTY. DESCRIPTION

-- - - - - - - - 1 Tank Assembly (Includes items 1 thru 12) (Not available. Order components)

00912.0000 1 Clip "J" Type, #8-32 (Early models only)

01315.0000 1 Screw, #8-32 x .375" SST

01317.0005 1 Screw, #8-32 x .375" Blk

1 02515.0000 1 Tank

2 02575.0000 2 Blanket Warmer,120V (HW2 0nly)

01929.0000 2 Blanket Warmer,240V (HW2A 0nly)

3 02534.1000 1 Tank Heater Kit,120V (HW2 0nly)(Includes item 4)

02494.1000 2 Tank Heater Kit,240V (HW2A 0nly)(Includes item 4)

4 00943.0000 2 Gasket

5 00942.0000 2 Nut, Hex .50"-20

6 02525.0000 1 Lid, Tank

00908.0000 8 Nut, #8-32

7 29329.1000 1 Thermostat, Limit

8 21016.0008 2 Lead (HW2 0nly)

20211.0100 2 Thermal Cut-off (HW2A 0nly)

9 02513.0000 1 Tube

10 03633.0000 1 Gasket

11 01075.0000 1 Nut, Hex .438"-20

12 04221.0000 1 Gasket, Tank Lid

13 02536.0000 1 Grommet

14 07048.1000 1 Probe Replacement Kit (Includes items 15 and 16)

15 20203.0100 1 Lockwasher, Internal Tooth #8

16 00908.0000 2 Nut, Hex #8-32

17 01522.0000 3 Washer,Spacer

18 00971.0000 1 Nut, Keps #10-32

19 03803.0000 1 Switch Assy, Level Float (Includes items 20 thru 22)

00946.0000 1 Nut, Hex .125"-27

20 03633.0000 1 Gasket

21 - - - - - - - - 3 Washer, Adjusting (DO NOT USE IN THIS APPLICATION)

22 03807.0000 1 Clip, Spring

23 02520.0000 1 Cup, Overflow

00971.0000 2 Nut, Keps #10-32

7

28888 061303

BUNN

®

STRAINER/FLOW CONTROL

HW2

HW2A

11

9

12

13

8

10

7

6

8

9

4

5

2

3

1

26 25 24 23 22 27

18

14

19

17

16

15

Late Models

15

18

14

Early Models

8

16

17

19

20

21

P1533

28888 060700

STRAINER/FLOW CONTROL

ITEM PART NO. QTY. DESCRIPTION

1 02533.0000 1 Tube (Includes item 2)

2 00929.0001 1 Nut, Compression

3 07075.0000 1 Grommet

4 21695.0001 1 Elbow, Compression .38" x .125" MPT

5 02530.0000 1 Bracket, Solenoid Mounting (HW2 only)

28130.0000 1 Bracket, Solenoid Mounting (HW2A only)

00971.0000 2 Nut, Keps #10-32

6- - - - - - - - 1 Solenoid,120V 1.48" Dia. Coil (HW2 only)(Not Available. Order 01085.0002)

01085.0002 1 Solenoid,120V 1" Dia. Coil (HW2 only)(Includes items 8 thru 11)

01327.0000 2 Screw, #10-32 x .375"

01502.0000 2 Lockwasher, #10

7 28005.0000 1 Solenoid, 240V (HW2A only)(Includes items 8 and 9)

02329.0000 2 Screw,Locking #8-32 x .375"

8 28480.0000 1 Coil 120V (HW2 only)

28020.0000 1 Coil 240V (HW2A only)

9 01111.0002 1 Solenoid Valve Repair Kit 120V (HW2 only)

28021.0000 1 Solenoid Valve Repair Kit 240V (HW2A only)

10 28479.0000 1 Base Kit (Includes O-ring) (HW2 only)

11 28481.0000 1 Guide Kit 120V (Includes Washer and O-ring) (HW2 only)

12 00402.0001 1 Connector, Male .25" FLR x .125" MPT

13 21814.0017 1 Tube

14 22300.0750 1 Strainer/Flow Control Assy (.750 GPM)(Includes items 15 thru 21)(Early Models)

20528.1750 1 Flow Control Assy (.750 GPM)(Includes items 15 thru 19)(Late Models)

15 01154.0000 1 Flow Control Outlet (Early Models)

01154.0001 1 Flow Control Outlet (Late Models)

16 01155.0000 1 Gasket, Flow Control

17 - - - - - - - - 1 Washer, Flow Control

18 20526.1750 1 Washer/Gasket Assy (Includes item 16 and 17)

19 - - - - - - - - 1 Body (Order item 14)

20 23721.0000 1 Screen

21 22249.0000 1 Cap, End

22 00310.0005 1 Tube (Early Models)(w/Strainer/Flow Control)

21814.0016 1 Tube (Late Models)(w/Flow Control)

23 00463.0000 1 Nut, Hex .438"-20

24 01532.0000 1 Lockwasher, Internal Tooth .438"

25 00459.0000 1 Fitting, Bulkhead .25" Flare

26 00935.0000 1 Cap, Flare (For Shipping Purposes only)

27 00445.0001 1 Connector .25" male flare x .125"FPT (Late Models)

28 M2517.0000 - Pipe Sealant, 6ml (Not Illustrated)

28 01060.0000 - Wrench, Solenoid Valve (Not Illustrated)(HW2 only)

01066.0000 - Wrench, Spanner (Not Illustrated)(HW2 only)

9

28888 060700

BUNN

®

THERMOSTAT AND LIQUID LEVEL CONTROL

HW2

HW2A

2

1

SERVICE REPLACEMENT

4

3

5

7 8 6

9

P1534

10

28888 060700

THERMOSTAT AND LIQUID LEVEL CONTROL

ITEM PART NO. QTY. DESCRIPTION

1 02542.0000 1 Thermostat Assy (Includes items 2 thru 5)

02328.0003 1 Screw, #6-32 x .312"

2 20762.0000 2 Screw, #8-32 x .25"

3 10003.0000 1 Tag, Instruction

4 00720.0000 1 Knob

5 07073.0000 1 Grommet

6 00912.0000 2 Clip "J" Type, #8-32

7 02537.0000 1 Bracket

01315.0000 2 Screw, #8-32 x .375"

8 07074.1000 1 Control Board, Liquid Level (HW2 only)

07074.1009 1 Control Board, Liquid Level (HW2A only)

01311.0000 2 Screw, #8-32 x .25"

00970.0000 2 Nut,KEPS #8-32

9 07105.0000 1 Shield, Protective

11

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BUNN

®

TANK FAUCET

HW2

HW2A

14

13

12

11

10

9

8

6

7

1

3 2

12

4 5

P1535

28888 060700

TANK FAUCET

ITEM PART NO. QTY. DESCRIPTION

1 07061.0000 1 Shank Assy, Faucet (Includes items 2 thru 5)

2- - - - - - - - 1 Body, Shank (Order item 1)

3 07119.0000 1 Nut, Shank

4 01221.0000 1 C-Ring, Shank

5 01268.0000 1 Nut, Union

6 07079.0000 1 Gasket, Faucet Shank

7 07094.0000 1 Faucet Assy (Includes items 8 thru 14)

8- - - - - - - - 1 Body, Faucet (Order item 7)

9 00600.0000 1 Cup, Faucet Seat

10 01284.0000 1 Stem W/Pin (Includes item 13)

11 00601.0000 1 Spring, Faucet

12 07127.0000 1 Nut, Faucet Bonnet

13 01219.0000 1 Pin, Faucet Handle

14 07099.0000 1 Handle, Faucet

- 28708.0000 - Faucet Repair Kit (Includes items 9,10,11 and 14)

13

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BUNN

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120 VOLTS A C

2 WIRE

SINGLE PHASE

0

0

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1

6

2

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1

®

ELECTRICAL AND OPERATING CONTROLS

HW2

HW2A

15

25

2

W

N

H

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A

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EN

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IA

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IN

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14

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23

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24

20

18

8

14

14

P1536

28888 061504

ELECTRICAL AND OPERATING CONTROLS

ITEM PART NO. QTY. DESCRIPTION

1- - - - - - - - 1 Tank Heater (See TANK AND COMPONENTS)

2 02540.0000 1 Wiring Harness, 120V (HW2 only. Not Illustrated)

28144.0000 1 Wiring Harness, 240V (HW2A only. Not Illustrated)

3- - - - - - - - 1 Level Probe (See TANK AND COMPONENTS)

4 21016.0008 1 Lead, Tank Heater To Limit Switch (HW2 only)

20211.0100 1 Thermal Fuse, Tank Heater To Limit Switch (HW2A only)

5- - - - - - - - 1 Limit Switch (See TANK AND COMPONENTS)

6 21016.0041 1 Lead, Limit Switch To Thermostat

7- - - - - - - - 1 Thermostat (See Liquid Level Control)

8 21016.0042 1 Lead, Thermostat To Wire Nut

9 01554.0000 2 Wire Nut, Red (Not Illustrated)

10 01637.0000 1 Power Cord (HW2 only. Not Illustrated)

11 00707.0000 1 Bushing, Strain Relief (HW2 only)

12 21000.0074 1 Lead, Red Wire Nut To Splice (Not Illustrated)

13 21001.0066 1 Lead, White, Red Wire Nut To Splice (HW2 only. Not Illustrated)

21003.0004 1 Lead, Red, Red Wire Nut To Splice (HW2A only. Not Illustrated)

14 - - - - - - - - 2 Tank Warmer Blanket (See TANK AND COMPONENTS)

15 - - - - - - - - 1 Switch, Liquid Level (See TANK AND COMPONENTS)

16 03851.0000 2 Wire Nut, Gray (Not Illustrated)

17 - - - - - - - - 1 Solenoid Valve (See Liquid Level Control)

18 - - - - - - - - 1 Control Board (See Liquid Level Control)

19 01309.0000 1 Screw, Ground For Power Cord (HW2 only. Not Illustrated)

01375.0000 1 Screw, Ground For Power Connector (HW2A only. Not Illustrated)

20 02536.0000 1 Grommet

21 06064.0000 1 Decal, Cord Warning (HW2 only. Not Illustrated)

22 - - - - - - - - 1 Decal, Electrical Warning (See HOUSING AND COVERS)

23 01908.0000 1 Power Connector (HW2A only)

01362.0000 2 Screw, #4-40 x .50"

01509.0000 2 Lockwasher, #4

00937.0000 2 Nut, Hex, #4-40

24 00824.0000 1 Decal, Ground (HW2A only)

25 - - - - - - - - 1 Electrical Schematic (See HOUSING AND COVERS)

15

28888 060700

NUMERICAL INDEX

PART NO. PAGE NO. PART NO. PAGE NO. PART NO. PAGE NO. PART NO. PAGE NO.

M2517.0000 ........................ 9

00310.0005 ......................... 9

00402.0001 ......................... 9

00445.0001 ......................... 9

00459.0000 ......................... 9

00463.0000 ......................... 9

00600.0000 ....................... 13

00601.0000 ....................... 13

00656.0000 ......................... 5

00657.0000 ......................... 5

00707.0000 ....................... 15

00720.0000 ....................... 11

00824.0000 ....................... 15

00831.0000 ......................... 5

00908.0000 ......................... 7

00912.0000 .................... 7,11

00917.0000 ......................... 5

00929.0001 ......................... 9

00935.0000 ......................... 9

00937.0000 ....................... 15

00942.0000 ......................... 7

00943.0000 ......................... 7

00946.0000 ......................... 7

00970.0000 .................... 5,11

00971.0000 ...................... 7,9

01060.0000 ........................ 9

01066.0000 ........................ 9

01075.0000 ......................... 7

01085.0002 ........................ 9

01111.0002 ......................... 9

01154.0000 ......................... 9

01154.0001 ......................... 9

01155.0000 ......................... 9

01219.0000 ....................... 13

01221.0000 ....................... 13

01268.0000 ....................... 13

01284.0000 ....................... 13

01303.0000 ......................... 5

01309.0000 ....................... 15

01311.0000 .................... 5,11

01315.0000 ................. 5,7,11

01327.0000 ......................... 9

01362.0000 ....................... 15

01375.0000 ....................... 15

01502.0000 ......................... 9

01509.0000 ....................... 15

01522.0000 ......................... 7

01532.0000 ......................... 9

01554.0000 ....................... 15

01637.0000 ....................... 15

01908.0000 ....................... 15

01929.0000 ......................... 7

02328.0003 ....................... 11

02329.0000 ......................... 9

02494.1000 ......................... 7

02497.0000 ......................... 5

02504.0000 ......................... 5

02504.0001 ......................... 5

02505.0000 ......................... 5

02505.0001 ......................... 5

02506.0000 ......................... 5

02506.0001 ......................... 5

02507.0000 ......................... 5

02508.0000 ......................... 5

02508.0002 ......................... 5

02508.0004 ......................... 5

02510.0001 ......................... 5

02510.0002 ......................... 5

02513.0000 ......................... 7

02515.0000 ......................... 7

02520.0000 ......................... 7

02525.0000 ......................... 7

02530.0000 ......................... 9

02533.0000 ......................... 9

02534.1000 ......................... 7

02536.0000 .................... 7,15

02537.0000 ....................... 11

02540.0000 ....................... 15

02542.0000 ....................... 11

02545.0000 ......................... 5

02546.0000 ......................... 5

02547.0000 ......................... 5

02575.0000 ......................... 7

03633.0000 ......................... 7

03803.0000 ......................... 7

03807.0000 ......................... 7

03851.0000 ....................... 15

04221.0000 ......................... 7

06064.0000 ....................... 15

07048.1000 ......................... 7

07061.0000 ....................... 13

07073.0000 ....................... 11

07074.1000 ....................... 11

07074.1009 ....................... 11

07075.0000 ......................... 9

07079.0000 ....................... 13

07094.0000 ....................... 13

07099.0000 ....................... 13

07105.0000 ....................... 11

07119.0000 ....................... 13

07127.0000 ....................... 13

10003.0000 ....................... 11

10261.0000 ......................... 5

20203.0100 ......................... 7

20211.0100 .................... 7,15

20526.1750 ......................... 9

20528.1750 ......................... 9

20762.0000 ....................... 11

21000.0074 ....................... 15

21001.0066 ....................... 15

21003.0004 ....................... 15

21016.0008 .................... 7,15

21016.0041 ....................... 15

21016.0042 ....................... 15

21695.0001 ......................... 9

21814.0016 ......................... 9

21814.0017 ......................... 9

22249.0000 ......................... 9

22300.0750 ......................... 9

23721.0000 ......................... 9

25137.0002 ......................... 5

28005.0000 ......................... 9

28020.0000 ......................... 9

28021.0000 ......................... 9

28130.0000 ......................... 9

28144.0000 ....................... 15

28479.0000 ........................ 9

28480.0000 ........................ 9

28481.0000 ........................ 9

28708.0000 ...................... 13

28918.0000 ........................ 5

28918.0001 ........................ 5

29329.1000 ......................... 7

34466.0000 ......................... 5

16

28888 111803