Wilbur Curtis WB5N Service Manual

Models Included

• WB5N

• WB5NL

• WB5N30

• WB5NB

• WB5NLB

CAUTION:

Equipment must be

installed to comply
with applicable federal, state,
and local plumbing/electrical

codes.

CAUTION: Follow

this setup procedure

before attempting

to use this unit. Failure to

follow these instructions can
result in injury and/or void of

warranty.

CAUTION: DO NOT

connect the unit to

hot water supply.

The inlet valve is not rated for

hot water.

Wilbur Curtis Company, inC.

Service Manual – WB5N Hot Water Dispenser

Important Safeguards/Symbols

This equipment is designed for commercial use. Any servicing other than cleaning and routine
maintenance should be performed by an authorized Wilbur Curtis Company service technician.

• DO NOT immerse the unit in water or any other liquid

• To reduce the risk of re or electric shock, DO NOT open service panels. There are no user

serviceable parts inside.

• Keep hands and other items away from hot areas of the unit during operation.

• Never clean with scouring powders or harsh chemicals.

Symbols:

WARNINGS – To help avoid personal injury

Important Notes/Cautions – from the factory

Sanitation Requirements

INSTALLATION

This Curtis unit is pre-set and ready to go from the factory.

System Requirements:

• Water Supply 20 – 90 PSI (MINIMUM FLOW RATE of 2 GPM)*

• Electrical: See electrical schematic.

SETUP STEPS

1. The unit should be level (left to right - front to back), on a secure surface.

2. Connect the water line to the water inlet tting on the rear of the unit. Water volume going to the
machine should be consistent. Use tubing sized sufciently to provide a minimum ow rate of
two gallons per minute.

NOTE:Awaterltrationsystemmustbeusedtohelpmaintaintrouble-freeoperation.Air must be
purged from the cartridge prior to connection to equipment. Inareaswithextremelyhardwa-

ter,wehighlyrecommendtheuseofaCurtisapprovedwaterlter.Forourfulllineoflters,please

log on to www.wilburcurtis.com.

NSF requires the following water connection:

1. A quick disconnect or additional coiled tubing (at least 2x the depth of the unit) is required so
that the unit can be moved for cleaning.

2. Thisunitmustbeinstalledwithadequatebackowprotectiontocomplywithapplicablefederal,

state and local codes.

3.Waterpipeconnectionsandxturesdirectlyconnectedtoaportablewatersupplyshallbesized,

installed and maintained in accordance with federal, state, and local codes.

3. Connect the unit to electrical outlet with appropriate amperage rating (See serial tag on ma­chine).

ISO 9001:2008 REGISTERED

WILBUR CURTIS CO.

6913 Acco Street,

Montebello, CA 90640-5403

For the latest information go to

www.wilburcurtis.com

Tel: [phone]

Fax: [phone]

4. Once power has been supplied to the unit, ip the toggle switch to the ‘ON’ position (located on
the rear of the unit), the water tank will begin to ll. When the water level in the tank reaches the
probe, the heating element will turn on.

5. During the initial setup, the heating tank will reach operating temperature in 60 to 70 minutes
(factory default 204°F).

* Expect ow rate from hot water faucet to be 1 GPM from WB5N and 2 GPM from WB5NL

For the latest specications and information go to www.wilburcurtis.com

1

PROGRAMMING

UNIVERSAL CONTROL MODULE (UCM)

A FUNCTION

1. Press TEMP button for 1 second to check the set point tem-

perature.

2. Press TEMP button for 3 seconds to enter heating tank tem-

perature programming mode. The temperature in the heating

tank is adjustable from 140º to 210º F.

To change temperature setting:

a. Press to decrease temperature.

b. Press to set and exit programming.

c. Press to increase at 2º increments.

B FUNCTION

1. Press the AERATION button to pump air through the water in the heating tank.

2. Aerator pump will run as long as you hold down the button. Release button to stop.

LED SCREEN DISPLAY

When the unit is on and not in programming mode, the UCM will stay on and the LED screen will
display the current tank temperature. The factory setting is 204ºF. In the UCM programming, there is
an option to change the screen display to read HOT instead of the set point temperature. You may also
change the temperature units from Fahrenheit to Celsius.

To Change the LED To Read HOT:

1. Press the left TEMP button and hold down for 5 seconds. The F will start ashing.

2. Continue holding the TEMP button, at the same time, press and hold the ON/OFF button for 5

seconds.

3. Release both buttons. The program is now changed and the LED screen will display HOT.

4. While in the HOT display, pressing the TEMP button for 1 second will display the tank temperature.

To Change the LED To Read In Celsius:

NOTE: When the LED screen is in the HOT display mode, you cannot switch between Fahrenheit and
Celsius. The LED screen must be in the Temperature display mode.

1. Press and hold down the TEMP button for 10 seconds. The temperature reading will change to

Celsius.

2. Release the TEMP button. The LED screen will display the temperature in degrees Celsius (default is 96ºC).

AERATOR

The aerator pump will automatically come on every 30 minutes. Aeration is factory set to run for 5 seconds. When the aeration is running, the display
shows the LED bars chasing from left to right.

I/O FUNCTION

1. ON/OFF button. Press once to activate control panel.

2. ON/OFF button used to set and exit programming.

ERROR CODES

ERR1=Overow.Waterlevelerror. ERR2 = Open sensor. Break in temperature thermistor circuit.

ENERGY SAVER

The Energy Saver Mode is Defaulted to off. To turn on the energy saver mode, press and hold both the ON and TEMP button for 10 seconds. Use
the scroll buttons TEMP ◄ and ► AIR to choose OFF, ON, or 140ºF. Press the button to select.

If “OFF” is selected, Energy saver is disabled.

If “On” is selected, 4 Hr. after last dispense, the temp will not be maintained at any temperature (it will eventually drop to room temp).

If “140F” is selected, 4 Hr. after last dispense it maintains Tank Temp at 140F.

When the Energy Saver Mode is on, you can turn it off by pressing one of the control buttons or by simply dispensing some water through the faucet.

2

ILLUSTRATED PARTS LIST

1
2

3
4
5

6

7

8

11
12

13

14

15

10

9

DESCRIPTIONPART №ITEM №

1
1A
2
2A

3
4
4A
5

6
7

8
8A

9
10
11
12
13
14

WC-37567K
WC-37579BLK
WC-1048-101*
WC-1009-101
WC-13046-101
WC-718 *
WC-719
WC-53157-101
WC-794K *
WC-8559*
WC- 847*

WC-883

WC-3518*
WC-3503*
WC-61987
WC-2948
WC-1200
WC-103 *

KIT, TOP COVER WB5N & WB5NL
KIT, TOP COVER WB5NB & WB5NLB BLACK
PUMP ASSEMBLY, AGITATION (120V)
PUMP, AGITATION 220V W/CAPACITOR & TERMINALS
HARNESS ASSEMBLY, DV WB5N & WB5NL
TRANSFORMER, 120VAC-12VAC 500mA W/PIGTAIL WIRES
TRANSFORMER, 240/120VAC-12VAC
TRIM, EDGE GUARD CHROME
KIT, MINI UNIVERSAL CONTROL MODULE 120VAC W/LABEL
RELAY, SOLIDSTATE 40A W/INTEGRATED HEATSINK
VALVE, INLET 2 GPM 120V 10W
VALVE, INLET 2 GPM 240V 10W
LEG, GLIDE 3/8”-16 STUD SCREW
LEG, 3/8”-16 STUD SCREW BUMPER
BRACKET, STIFFENER
FITTING, TANK OVERFLOW
CORD, 14/3 SJTO 6’ BLK W/PLUG
SWITCH, TOGGLE DPST 25A 125/250VAC RESISTIVE

* SUGGESTED PARTS TO STOCK

3

ILLUSTRATED PARTS LIST

23
24

19
22

17
18
20

16

25
26

27
29

28
30
30

31

32

33

21

15

WC-61549-101

15A

WC-61549-101BLK

16

WC-37568K

16A

WC-37578BLK

17

WC-43157

18

WC-43158

19

WC-1955

20

WC-1903

21

WC-1800HW*

22

WC-1906

23

WC-1939

24

WC-1813

25

WC-37008*

26

WC-43067*

27

WC-5310

28

WC-2471

34

DESCRIPTIONPART №ITEM №
COVER, SIDE ACCESS

COVER, SIDE ACCESS BLACK WB5N/NL/5NB/5NLB

KIT, FRONT COVER WB5N & WB5NL

KIT, FRONT COVER WB5NB & WB5NLB (BLACK)

GROMMET, RUBBER 0.89” ID

BUSHING, PLASTIC 1.375 OD

SHANK, FAUCET PLAIN

NUT, UNION SHANK

FAUCET, S’ SERIES HOT WATER

C’RING, .917 x .760 x .090

NUT, FLANGED

WASHER, 1⅛” O.D.

KIT, TANK LID ROUND

O’RING, 4½ I.D. x Ø.285 C.S. SILICONE

TUBE, 5/16 I.D. x 1/8” W SILICONE (4.25 FT)

ELBOW, SILICONE

4

* SUGGESTED PARTS TO STOCK

ILLUSTRATED PARTS LIST

31A

16

39

19

23

20

24

21
22

NOTE: The WB5NL unit is Illustrated on this page. Many of the parts shared between
the three hot water dispensers. Parts unique to the WB5NL are noted in bold type.

DESCRIPTIONPART №ITEM №

29

30

31

31A

32

33

34

35

36

37

38

39

WC-5350

WC-5502-01*

WC-54339

WC-54339-101

WC-934-04 *

WC-4394

WC-1438-101*

WC-37357*

WC-522 *

WC-43055

WC-37266*

WC-43159

TUBE, Ø1/2” x 1/8” WALL SILICONE (1.5 FT)

PROBE, WATER LEVEL

TANK ASSEMBLY, WB5N

TANK ASSEMBLY, WB5NL

HEATING ELEMENT, 220VAC 2500W

GUARD, SHOCK HEATING ELEMENT

SENSOR, TEMPERATURE TANK

KIT, STRAIGHT PLASTIC FITTING AND BUSHING 12MM

THERMOSTAT, HI LIMIT HEATER DPST 277V-40A

GUARD, SHOCK RESET THERMOSTAT

KIT, FITTING TANK OVERFLOW

PLUG, HOLE 1.375”

35

36

37

38

* SUGGESTED PARTS TO STOCK

5

ELECTRICAL SCHEMATIC

6

ELECTRICAL SCHEMATIC

7

WB5N
ROUGH-IN DRAWING

WB5NL
ROUGH-IN DRAWING

8

CLEANING

Regular cleaning and preventive maintenance is essential in keeping your hot water dispenser looking and
working like new. To clean the hot water dispensing unit and components, prepare a mild solution of detergent
and warm water.

CAUTION – Do not use cleansers, bleach liquids, powders or any other substance containing chlo­rine. These products promote corrosion and will pit the stainless steel. USE OF THESE PRODUCTS
WILL VOID THE WARRANTY.

DAILY CLEANING

1. Wipe exterior surfaces with a cloth soaked with a mild detergent solution. Wipe off any water spots, food
spills, or crumbs.

2. Rinse off the area using a cloth soaked in clean water to remove any residual cleaning solution.

3. Dry the area.

4. If a drip tray is used, dump out the water and clean inside the tray. Remove the screen and wash.

5. Dry the tray.

6. On a stainless nish, rub stainless steel polish on the outside surfaces to protect the cabinet.

9

Product Warranty Information

The Wilbur Curtis Company certies that its products are free from defects in material and workmanship under normal
use. The following limited warranties and conditions apply:

3 Years, Parts and Labor, from Original Date of Purchase on digital control boards.

2 Years, Parts, from Original Date of Purchase on all other electrical components, ttings and tubing.

1 Year, Labor, from Original Date of Purchase on all electrical components, ttings and tubing.

Additionally, the Wilbur Curtis Company warrants its Grinding Burrs for Forty (40) months from date of purchase or 40,000 pounds
of coffee, whichever comes rst. Stainless Steel components are warranted for two (2) years from date of purchase against leaking
or pitting and replacement parts are warranted for ninety (90) days from date of purchase or for the remainder of the limited warranty
period of the equipment in which the component is installed.
All in-warranty service calls must have prior authorization. For Authorization, call the Technical Support Department at 1-800-995-

0417. Effective date of this policy is April 1, 2003.

Additional conditions may apply. Go to www.wilburcurtis.com to view the full product warranty information.

CONDITIONS & EXCEPTIONS
The warranty covers original equipment at time of purchase only. The Wilbur Curtis Company, Inc., assumes no responsibility for
substitute replacement parts installed on Curtis equipment that have not been purchased from the
Wilbur Curtis Company, Inc. The Wilbur Curtis Company will not accept any responsibility if the following conditions are not met. The
warranty does not cover and is void under the following circumstances:

1) Improper operation of equipment: The equipment must be used for its designed and intended purpose and function.

2) Improper installation of equipment: This equipment must be installed by a professional technician and must comply with all

local electrical, mechanical and plumbing codes.

3) Improper voltage: Equipment must be installed at the voltage stated on the serial plate supplied with this equipment.

4) Improper water supply: This includes, but is not limited to, excessive or low water pressure, and inadequate or uctuating

water ow rate.

5) Adjustments and cleaning: The resetting of safety thermostats and circuit breakers, programming and temperature

adjustments are the responsibility of the equipment owner. The owner is responsible for proper cleaning and regular
maintenance of this equipment.

6) Damaged in transit: Equipment damaged in transit is the responsibility of the freight company and a claim should be

made with the carrier.

7) Abuse or neglect (including failure to periodically clean or remove lime accumulations): Manufacturer is not responsible for

variation in equipment operation due to excessive lime or local water conditions. The equipment must be maintained accord­ ing to the manufacturer’s recommendations.

8) Replacement of items subject to normal use and wear: This shall include, but is not limited to, light bulbs, shear disks, “0”

rings, gaskets, silicone tube, canister assemblies, whipper chambers and plates, mixing bowls, agitation assemblies and

whipper propellers.

9) Repairs and/or Replacements are subject to our decision that the workmanship or parts were faulty and the defects showed

up under normal use. All labor shall be performed during regular working hours. Overtime charges are the responsibility of
the owner. Charges incurred by delays, waiting time, or operating restrictions that hinder the service technician’s ability to
perform service is the responsibility of the owner of the equipment. This includes institutional and correctional facilities.
The Wilbur Curtis Company will allow up to 100 miles, round trip, per in-warranty service call.

RETURN MERCHANDISE AUTHORIZATION: All claims under this warranty must be submitted to the Wilbur Curtis Company
Technical Support Department prior to performing any repair work or return of this equipment to the factory. All returned equip­ment must be repackaged properly in the original carton. No units will be accepted if they are damaged in transit due to improper
packaging. NO UNITS OR PARTS WILL BE ACCEPTED WITHOUT A RETURN MERCHANDISE AUTHORIZATION (RMA). RMA
NUMBER MUST BE MARKED ON THE CARTON OR SHIPPING LABEL. All in-warranty service calls must be performed by an
authorized service agent. Call the Wilbur Curtis Technical Support Department to nd an agent near you.

ECN 15491 . 6/10/14@13.2 . revD

ECN 15680 . 2/24/14@10.3 . revC
ECN 15344 . 9/19/13@11.6 . revB
ECN 15191 . 7/25/13@10.5 . revA

EDR 8755 . 5/22/13@12.5 . revNC

10

WILBUR CURTIS CO., INC.

6913 Acco St., Montebello, CA 90640-5403 USA
Phone: [phone] Fax: [phone]

Technical Support Phone: [phone] (M-F 5:30A - 4:00P PST) E-Mail: [e-mail]
Web Site: www.wilburcurtis.com

For The Latest Specication Information Go To www.wilburcurtis.com

7/2014 . F-3912 rev D