Bunn U3A PARTS LIST

U3/U3A

SERIES

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]

42786.0000E 05/13 ©2010 Bunn-O-Matic Corporation

BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY

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

1) Airpots, thermal carafes, decanters, GPR servers, iced tea/coffee dispensers, MCP/MCA pod brewers thermal servers
and Thermofresh servers (mechanical and digital)- 1 year parts and 1 year labor.

2) All other equipment - 2 years parts and 1 year labor plus added warranties as specified below:
a) Electronic circuit and/or control boards - parts and labor for 3 years.
b) Compressors on refrigeration equipment - 5 years parts and 1 year labor.
c) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis - parts

and labor for 4 years or 40,000 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, non periodic cleaning and descaling, equipment failures related to poor water quality,
damage or casualty. In addition, the warranty does not apply to replacement of items subject to normal use including but
not limited to user replaceable parts such as seals and gaskets. This warranty is conditioned on the Buyer 1) giving BUNN
prompt notice of any claim to be made under this warranty by telephone at [phone] 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.

392, A Partner You Can Count On, Air Infusion, AutoPOD, AXIOM, BrewLOGIC, BrewMETER, Brew Better Not Bitter, Brew­WISE, BrewWIZARD, BUNN Espress, BUNN Family Gourmet, BUNN Gourmet, BUNN Pour-O-Matic, BUNN, BUNN with
the stylized red line, BUNNlink, Bunn-OMatic, Bunn-O-Matic, BUNNserve, BUNNSERVE with the stylized wrench design,
Cool Froth, DBC, Dr. Brew stylized Dr. design, Dual, Easy Pour, EasyClear, EasyGard, FlavorGard, Gourmet Ice, Gourmet
Juice, High Intensity, iMIX, Infusion Series, Intellisteam, My Café, Phase Brew, PowerLogic, Quality Beverage Equipment
Worldwide, Respect Earth, Respect Earth with the stylized leaf and coffee cherry design, Safety-Fresh, savemycoffee.com,
Scale-Pro, Silver Series, Single, Smart Funnel, Smart Hopper, SmartWAVE, Soft Heat, SplashGard, The Mark of Quality
in Beverage Equipment Worldwide, ThermoFresh, Titan, trifecta, Velocity Brew, Air Brew, Beverage Bar Creator, Bever­age Profit Calculator, Brew better, not bitter., BUNNSource, Coffee At Its Best, Cyclonic Heating System, Daypart, Digital
Brewer Control, Element, Nothing Brews Like a BUNN, Pouring Profits, Signature Series, Tea At Its Best, The Horizontal
Red Line, Ultra are either trademarks or registered trademarks of Bunn-O-Matic Corporation. The commercial trifecta®
brewer housing configuration is a trademark of Bunn-O-Matic Corporation.

2

42786 021513

TABLE OF CONTENTS

Housing, Panels & Covers .........................................................................................................................4

Funnels, Sprayheads, Filter Baskets & Supports ........................................................................................8

Strainer & Solenoid Valve Piping .............................................................................................................12

Strainer & Solenoid Valve Piping (U3A, after SN U300004095) ...............................................................16

Thermostats & Tank Heaters ....................................................................................................................18

Pump/Motor & Mounting (Early Models) .................................................................................................20

Pump/Motor & Mounting (Late Models) ..................................................................................................22

Swing Spout & Mounting .........................................................................................................................24

Reservoirs, Faucets & Sight Gauges (Single & Double Service Brewers) ................................................26

Reservoirs, Faucets & Sight Gauges (Scrambler) ....................................................................................30

Outlet Box and Terminal Block .................................................................................................................34

Electrical Controls & Indicator Lights .......................................................................................................36

Electrical Controls & Indicator Lights (U3A, after SN U300004095) ........................................................40

Numerical Index .......................................................................................................................................44

To order coffee filters, water filters, or other accessories, refer to Specification Sheets at www.bunn.com

3

42786 021910

®

HOUSING, PANELS, COVERS AND CE OPTIONS

1 2 3

U3

4
5

6

27

26

25

28
17

9

10 12 11 12 10

32

BREWERS W & W/O BREW LOCKOUT

8

4
5

32

7

33

16

13

14

15

SINGLE SERVICE

LEG OPTION

ONLY

23

24

20

21

22

16

31

17

26

18

19

P1295.30

4

42786 021910

HOUSING, PANELS, COVERS AND CE OPTIONS

ITEM PART NO. QTY. DESCRIPTION

ITEM PART NO. QUANTITY DESCRIPTION
* ** ***
1 07239.0000 1 - 1 Cover, Cupola - Rear

07239.0002 1 - 1 Cover, Cupola - Rear (Models with Master ON/OFF Switch)

07240.0000 - 1 - Cover, Cupola - Rear

01317.0000 2 2 2 Screw, Truss Head #8-32 x .5”

2 28064.1000 1 1 1 Housing, Cupola (All Models w/o Interlock Option) Shown

28064.1004 1 - - Housing, Cupola (230V Models w/Interlock Option)

3 07238.0000 1 1 1 Bracket, Switch Mounting (I20/208V, 120/240V, 380V, 440V Brewers & 240V
Brewers Prior to #U300004095)

27903.0000 1 1 - Bracket, Switch Mounting (240V Brewer #U300004095 and up)

01315.0000 2 2 2 Screw, Truss Head Phillips #8-32 x .38”

4 07236.0000 1 1 1 Cover, Cupola - Front (Brewers W/Out Brew Lockout)

07236.0001 1 1 1 Cover, Cupola - Front (Brewers W/Brew Lockout)

07236.0002 1 1 1 Cover, Cupola - Front (Brewers W/External Thermostat Control)

02322.0000 2 2 2 Screw, Truss Head. Blk Oxide #8-32 x .50”

00917.0000 2 2 2 Fastener, “J” Type #8-32

*Single Service (Front Faucets Only)

**Double Service (Front and Rear Faucets)

***Scrambler (Left and Right Side Faucets)

Each Includes
item 17, Order Sche­matic Seperately

Also Order
Item 32

5 07248.0000 1 1 1 Decal, Power/Half-Full/Start

6 00878.0000 1 1 1 Decal, Turn Off When Unattended

7 21667.0000 1 1 1 Decal, Control (Brewers W/External Thermostat Control)

21667.0001 1 1 1 Decal, Control (Brewers W/O External Thermostat Control)

21667.0002 1 1 1 Decal, BUNN-O-MATIC (Brewers W & W/Out Brew Lockout)(Effective 10/1/99)

8 00875.0000 1 1 1 Decal, BUNN-O-MATIC (Brewers W & W/Out Brew Lockout)(Prior to 10/1/99)

9 07226.0000 1 1 1 Panel Assy, (Early) 120/208V; 120/240V & 3 Phase Brewers w/ Circuit Breaker

07226.0002 1 1 1 Panel Assy, 230V CE Brewers w/ Fuse Mounting

07226.0003 1 1 1 Panel Assy, 120/208V and 120/240V Brewers (Models with Master ON/OFF Switch)

01315.0000 12 12 12 Screw, Truss Head Phillips #8-32 x .38”

10 07288.0000 4 4 4 Gasket, Reservoir Mounting

11 07289.0001 2 2 2 Gasket, Panel Mounting - 7.72” LG

12 07289.0002 2 2 2 Gasket, Panel Mounting - 13.25” LG

13 07001.1000 1 - - Housing W/Decals (Std. - W/4” Adjustable Legs)

07001.1002* 1 - - Housing W/Decals (Opt. - W/8” Adjustable Legs) (OBS)

07122.1000 - - 1 Housing W/Decals (W/4” Adjustable Legs)

07002.1000 - 1 - Housing W/Decals (W/4” Adjustable Legs)(Includes items 16,17,26 & 31)

14 00831.0000 1 1 1 Decal, Warning - Electrical

Includes items
14 -17,26 & 31

15 00656.0000 1 1 1 Decal, Comply to Plumbing Code

16 29299.0000 2 2 2 Decal, Caution Swing Spout

(Continued)

* Indicates the part number listed is for reference only. See DESCRIPTION for possible service replacement.

5

42786 111212

HOUSING, PANELS, COVERS AND CE OPTIONS

®

(Continued)

1 2 3

U3

4
5

6

27

26

25

28
17

9

10 12 11 12 10

32

BREWERS W & W/O BREW LOCKOUT

8

4
5

32

7

33

16

13

14

15

SINGLE SERVICE

LEG OPTION

ONLY

23

24

20

21

22

16

31

17

26

18

19

P1295.30

6

42786 021910

HOUSING, PANELS, COVERS AND CE OPTIONS

*Single Service (Front Faucets Only)

ITEM PART NO. QTY. DESCRIPTION

ITEM PART NO. QUANTITY DESCRIPTION
* ** ***

17 37881.0000 2 2 2 Decal, No Serviceable Parts

**Double Service (Front and Rear Faucets)

***Scrambler (Left and Right Side Faucets)

18 07285.0000 1 1 - Cover, Drip Tray

19 07286.0000 1 1 - Drip Tray

20 01526.0000 4 4 4 Washer, Flat .438” I.D. x 1.88” O.D. (Brewers W/4” Adjustable Legs)

21 00502.0000 4 4 4 Leg, 4” Adjustable - Nickel

22 03996.0000 4 4 4 Pad, Anti-skid - 1.25” Dia

23 07222.0000 4 - - Leg, 8” Adjustable

24 03993.0000 4 - - Pad, Anti-skid .70” Dia

25 07039.1000 - 1 - Cover, Rear Utility (Includes items 14,15 & 26)

01311.0000 - 6 - Screw, Truss Head #8-32 x .25”

26 12593.0000 1 2 2 Decal, Warning - Very Hot Water

27 00875.0000 - 1 2 Decal, BUNN-O-MATIC

28 10492.0000 1 1 1 Schematic, Electrical 120/208V & 120/240V - 3 Wire 1 Phase 60 Hz

10494.0000 1 1 1 Schematic, Electrical 208 or 240 - 3 Wire 3 Phase 50/60 Hz

10495.0000 1 1 1 Schematic, Electrical 380V or 440V - 4 Wire 3 Phase 50/60 Hz

10495.0001 1 1 1 Schematic, Electrical 380V - 3 Wire 3 Phase 50/60 Hz

29 13255.0002 - - - Kit, Leg 4” Adjustable Nickel (Includes items 21 & 22)

Optional. See item 30

See Item 29

Optional

30 07284.0000 - - - Drip Tray Assembly (Includes items 18 & 19) Optional

31 12555.0000 1 2 2 Decal, Caution - Hot Surfaces

32 32540.0001 1 1 1 Decal, Batch Set (Digital Timer - Late Models)

33 32859.1000 1 - - Shroud (Includes Items 16, 17, 26, 31) Optional

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

* Indicates the part number listed is for reference only. See DESCRIPTION for possible service replacement.

7

42786 021910

FUNNELS, SPRAYHEADS, FILTER BASKETS AND SUPPORTS

1

2

4

3

5

BREWERS WITH SST FUNNEL

COVER

6

16

17

U3

7

3

4

5

4

3

5

20

16

17

18

19

13

9

13

8

BREWERS WITH FILTER SUPPORT

10

11

14

15

12

SST FUNNELBYPASS FUNNEL

P1296.30

8

42786 021910

FUNNELS, SPRAYHEADS, FILTER BASKETS AND SUPPORTS

ITEM PART NO. QTY. DESCRIPTION

1 00725.0000 2 Knob, Plastic - Black

01315.0000 2 Screw, Truss Head Phillips #8-32 x .38”

2 01192.0000 2 Cover

3 07023.0003 2 Cover Assy, Plastic - Black (Includes items 4 & 5)

07023.0002* 1 Cover Assy, Plastic - Orange (CLOSEOUT, Order Black)

07177.0003 2 Cover Assy, Plastic - Black (Brewers W/Filter Support)(Includes items 4, 5 & 8)

07177.0002* 1 Cover Assy, Plastic - Orange (Brewers W/Filter Support)(CLOSEOUT, Order Black)

20508.0001 2 Cover Assy, SST (Includes items 4, 5 & 7)

20508.0003 2 Cover Assy, SST (Brewers W/Filter Support)(Includes items 4, 5, 7 & 8)

4 -------------- 2 Cover, Plastic - Black (Not available. Order item 3)

-------------- 1 Cover, Plastic - Orange (Not available. Order item 3)

-------------- 2 Cover, Plastic - Black (BrewersW/ Filter Support)(Not available. Order item 3)

-------------- 1 Cover, Plastic - Orange (Brewers W/ Filter Support )(Not available. Order item 3)

-------------- 2 Cover, SST (Not available. Order item 3)

-------------- 2 Cover, SST (Brewers W/Filter Support)(Not Available. Order item 3)

5 07024.1002 2 Sprayhead, Plastic - Black (Includes hardware below, except for acorn nuts)

01339.0000 6 Screw, Pan Head #6-32 x .625”

01520.0000 6 Lockwasher, Split #6

00906.0000 6 Nut, Hex #6-32

02319.0000 6 Nut, Acorn #6-32 (Brewers W/SST Funnel Cover)

Brewers W/Plastic
Funnel Covers

Also see Item 23

6 07175.0000 2 Filter Housing Stand (Not used on brewers w/filter support or SST funnels)

7 20507.0001 2 Ring, Funnel Cover, Plastic - Black (Brewers W/SST Funnel Cover)

02328.0004 4 Screw, Pan Head #6-32 x .312”

02319.0000 4 Nut, Acron #6-32

8 07176.0000 2 Basket, Filter Support

9 07022.0012 2 Funnel W/Decals, Plastic - Black (Includes items 16 & 17)

07022.0013* 1 Funnel W/Decals, Plastic - Orange (OBSOLETE, Order Black)

-------------- 2 Funnel Assy, SST (Includes items 10, 11, 12, 16 & 17)

10 20505.0000 2 Basket, Filter

11 20502.0000* 2 Funnel, SST

12 21472.0000* 2 Handle, Plastic - Black

01327.0000 4 Screw, Pan Head #10-32 x .38”

13 07021.0002 2 Support, Funnel Plastic - Black (Refer to Item 20)

07021.0004 1 Support, Funnel Plastic - Orange

-------------- 2 Support, Funnel Plastic - Black (Refer to item 20)(Brewers W/By-Pass)
20504 .0000 2 Support, Funnel SST (Refer to Item 20)

-------------- 2 Support, Funnel SST (Refer to item 20)(Brewers W/By-Pass)

14 03408.0000 2 Decal, Warning - Remove Funnel Slowly

15 03409.0000 2 Decal, Warning - Hot Liquid

(Continued)

* Indicates the part number listed is for reference only. See DESCRIPTION for possible service replacement.

9

42786 072011

FUNNELS, SPRAYHEADS, FILTER BASKETS AND SUPPORTS

1

2

4

3

5

BREWERS WITH SST FUNNEL

COVER

6

16

17

U3

7

3

4

5

4

3

5

20

16

17

18

19

13

9

13

8

BREWERS WITH FILTER SUPPORT

10

11

14

15

12

SST FUNNELBYPASS FUNNEL

10

P1296.30

42786 021910

FUNNELS, SPRAYHEADS, FILTER BASKETS AND SUPPORTS

ITEM PART NO. QTY. DESCRIPTION

16 07092.1003 1 Adaptor, Water By-Pass - Black

01360.0002 1 Screw, #6 x .375”, Plastite

17 07027.1003 1 Housing, Water By-Pass - Black

01315.0000 1 Screw, Truss Head Phillips #8-32 x .38”

00908.0000 1 Nut, Hex #8-32

01364.0000 2 Plascrew, #6 x .375” (Brewers W/Plastic Funnel Support)

18 41193.0003* 1 Tube, Silicone .375” I.D. x 3.0” LG (Order item 21)

19 00704.0000 1 Spring

The following tems are not illustrated:

20 07098.0001 2 Funnel Support Assy (Incl 13, 16 - 19)(W/By-Pass & Black Plastic Funnel Support)

07098.0002 1 Funnel Support Assy (Incl 13, 16 - 19) (W/By-Pass & Orn. Plastic Funnel Support)

07098.0003 2 Funnel Support Assy (Incl 13, 16 - 19)( W/By-Pass & SST Funnel Support)

21 41193.1002 - Tube, Silicone, .375” I.D. x 12.0” LG

22 07121.0002 - Funnel Kit, Plastic - Black (Includes items 3, 4, 5, 9 & 13)

07121.0006 - Funnel Kit, Plastic - Black (Brewers W/Filter Support Basket)(Includes items 3-5,
8,9 & 13)

07121.0010 - Funnel Kit, Plastic - Black (Brewers W/By-Pass)(Includes items 3, 4, 5, 9 & 13)

07121.0014 - Funnel Kit, Plastic - Black (Brewers W/Filter Support Basket & By-Pass )(Includes
items 3, 4, 5, 8, 9 & 13)

23 02564.0002 - Funnel Cover Lid Kit (Includes item 1 & 2)

* Indicates the part number listed is for reference only. See DESCRIPTION for possible service replacement.

11

42786 021910

STRAINER AND SOLENOID VALVE PIPING

U3

19

18

EARLY MODELS

33

34

2

3

4

5

2

6

Prior to

#U300004095

1

30

EARLY MODELS

SOLENOID REPAIR KIT

21
22
23
24
25
26

27 28 29

47

20

CE

19

45
46

44
35
36

37
42
43

6

7

39 38

40

41

SOLENOID REPAIR KIT

32 31

EARLY MODELS

240V SOLENOID REPAIR KIT

14 15 16

13 12 17

11 10 9 8

12

P1297.40

42786 053012

STRAINER AND SOLENOID VALVE PIPING

ITEM PART NO. QTY. DESCRIPTION

1 07052.0000* 1 Solenoid Valve Assy, 120V (Obsolete, Order Kit # 37420.0000)

07052.0002* 1 Solenoid Valve Assy, 240V (Obsolete, Order Kit # 37420.0001)

2 07072.0000 2 Connector, Male Brass .38” Tube x .25” Male

3 -------------- 1 Solenoid Valve (Not Available. Order item 1)(Refer to Items 20 & 30)

4 01537.0000 1 Washer, Nylon .753” I.D. x 1.006” O.D.

5 07083.1000* 1 Air Chamber, Solenoid Valve (Obsolete)

6 07051.1000 1 Tube Assy, Inlet - Solenoid to Housing (Includes
Nut and Ferrules)

7 07075.0000 1 Grommet, Inlet Tube Assy 120V

02536.0000 1 Grommet, Inlet Tube Assy 230V

8 01258.0000 1 Valve, Fill/Drain

9 01536.0000 1 Gasket, Fill/Drain Valve

10 07111.0000 1 Fitting, .38” Flare to .75” Hose

11 07109.0000 1 Tube Assy, Manual Refill - Tee to Fill/Drain Valve

12 07117.0000 1 Tube Assy, Strainer to Tee

13 23720.0000 1 Strainer Assy, (Includes items 14, 15 & 16)

14 23723.0000 1 Cap, End

15 23721.0000 1 Screen

16 -------------- 1 Housing, Strainer (Not Available. Order item 13)

17 07112.0000 1 Tee, .38” Male Flare

18 07037.1000 1 Tube Assy, Tee to Solenoid (Includes nuts and ferrules) (Early Model 120/208V,
120/240V, 380V, 440V Brewers and 240V Brewers prior to #U300004095)

19 00603.0000 1 Clamp, .438” I.D.

20 07261.0000 1 Repair Kit, Solenoid (Includes items 7, 21 thru 29)

21 -------------- 1 Spring, Plunger (Not Available. Order item 20)

22 -------------- 1 Plunger Assy (Not Available. Order item 20)

23 07264.0000 1 O-Ring, Bonnet

24 -------------- 1 Seat, Plunger (Not Available. Order item 20)

25 -------------- 1 O-Ring, Plunger Seat (Not Available. Order item 20)

26 -------------- 1 Screen (Not Available. Order item 20)

27 ------------- 1 Gasket, Orifice Plate (Not Available. Order item 20)

28 -------------- 1 Diaphragm, Flow 1.0 GPM (Not Available. Order item 20)

29 01537.0000 1 Washer, Nylon

30 07261.0001 1 Seal Kit, Solenoid (Includes items 7, 21, 23, 24, 25 & 27)

31 28020.0000 1 Coil

32 28021.0000 1 Core Assy Kit (Includes Core, Spring and O-ring)

33 29649.0000 1 Diaphragm and Spring Kit (Includes item 34)

34 29648.0000 1 Spring, Diaphragm

35 21695.0001 1 Elbow

(Continued)

* Indicates the part number listed is for reference only. See DESCRIPTION for possible service replacement.

13

42786 021910

STRAINER AND SOLENOID VALVE PIPING

(Continued)

U3

19

18

EARLY MODELS

33

34

2

3

4

5

2

6

Prior to

#U300004095

1

30

EARLY MODELS

SOLENOID REPAIR KIT

21
22
23
24
25
26

27 28 29

47

20

CE

19

45
46

44
35
36

37
42
43

6

7

39 38

40

41

SOLENOID REPAIR KIT

32 31

EARLY MODELS

240V SOLENOID REPAIR KIT

14 15 16

13 12 17

11 10 9 8

14

P1297.40

42786 050112