Model CFB2 shown
Models covered
• CFB1
• CFB2
• CFB3
Wilbur Curtis Co., inC.
Service Manual – Frozen Beverage Dispenser
Important Safeguards/Symbols
Symbols:
WARNING/CAUTION – To advise about conditions that may result in property damage,
personal injury or death
IMPORTANT - Notes about proper operation
WARNING:
• This equipment is designed for commercial use only.
• To reduce the risk of re or electric shock, DO NOT open service panels. There are no user
serviceable parts inside. Any servicing other than cleaning and routine maintenance should
be performed by an authorized Wilbur Curtis Co., Inc. service technician. Refrigeration
equipment must be serviced by a licensed, certied, refrigerant technician.
• Do not install a damaged unit or a unit with a damaged power cord.
• Clean this appliance according to the CLEANING section of this manual before using it for
the rst time. Clean this appliance daily according to the CLEANING section.
• Keep hands and other items away from moving parts during operation.
• Dispose of refrigeration equipment and refrigerants in accordance with current local
environmental protection regulations and laws. This applies to an appliance that is being
replaced and to this unit, when it has reached the end of its service life. DO NOT dispose of
refrigeration equipment in a landll or urban waste. Contact your local governing authorities
for information on disposal requirements.
WARNING:
Read and follow the
setup instructions
before attempting to use this
appliance. Failure to follow these
instructions can result in injury
and/or void the warranty.
EXCESSIVE WEIGHT
WARNING: Due
to weight, this unit
requires a minimum of two
people to lift or reposition.
IMPORTANT: Installer:
Observe all codes and
ordinances.
WILBUR CURTIS CO., INC.
Montebello, CA 90640
For the latest information go to
www.wilburcurtis.com
Phone: 800-421-6150
SETUP INSTRUCTIONS
System Requirements
• Electrical: See the WIRING DIAGRAMS in this
manual or visit www.wilburcurtis.com for your
model. The electrical outlet must be in a location
that allows the unit to be easily disconnected for
service or cleaning.
• Operating Temperature: 68 to 90°F (20 to 32°C).
1. Select the location. The unit must be installed
indoors away from sources of moisture and heat.
The clearances shown are the minimum distances
from obstructions, between CFB units and other
equipment, required for proper operation. Do not
obstruct the ventilation grills on the back and sides.
Locate the unit on a secure, level surface. Install the
unit for easy removal if service is needed.
2. Unpack the unit. Keep the original packaging
materials in the event the unit needs to be returned
to the manufacturer.
IMPORTANT: RMAs will not be accepted unless the unit
is packaged in the original packaging material.
3. Locate the legs, packaged inside the bowls. Thread
them into the mounts on the bottom of the unit.
Hand tighten into place.
continued...
4" min.*
(10 cm)
CFB
frozen
beverage
dispenser
(10 cm)
4" min.*
60" min.
(150 cm)
*9" (23 cm) recommended
4" min.*
(10 cm)
1
3
READ AND SAVE THESE INSTRUCTIONS
Page 1
Wilbur Curtis Co., Inc.
SETUP INSTRUCTIONS (CONT.)
4. Level the unit left to right and front to back by rotating the feet on the bottom of
the legs.
5. Locate the drip trays, packaged inside the bowls. Position the drain hose in the
opening in the top of each tray. Then, insert the tabs on the back of the drip tray
into the holes on the front of the chassis. Push down gently to secure in place.
6. Prepare to install the dispensing levers by removing the handles from the taps.
Push in on the top of the handle with your thumb while pulling up on the bottom
with your index nger.
7. Locate the dispensing levers, packaged inside the bowls. Install them on the tap
handles. While pulling outward on both sides of the base of the dispensing lever,
insert the pins on the bottom of the handle into the base holes on the lever.
8. Lubricate the tap mounting slots using food grade lubricant.
9. Prepare the tap handle assembly for attachment. Lubricate the red rubber gasket
on the back of the tap handle assembly with food grade lubricant and insert it into
the tap hole on the bottom of the bowl. Line up the middle pins on the handle with
the mounting slots.
10. Attach the tap handle assembly. Push in with your thumb on the center of the
handle until the tap handle assembly pops into place.
WARNING: Use the
leveling legs to level
the dispenser only. Do
not use them to adjust unit height.
Do not extend them higher than
necessary.
Drain hose
4
Base
Lever
5
Spring must be
between mounts
Mount
6
Handle
7
8
Page 2
Red plug
(lubricate)
Line up as
shown
9
Push here
10
Service Manual - Frozen Beverage Dispenser
11. Open the control panel door (on the right side) and make sure the
main power switch is in the OFF (O) position.
12. Set the timer clock according to the
instructions below.
13. Connect the unit to a grounded,
3-prong, electrical outlet with the
IMPORTANT: The unit
may not operate as
desired if the timer is not
set properly.
appropriate amperage rating. The circuit
must be protected by a suitably rated circuit breaker. Do not use an
extension cord or any type of adapter.
14. Turn ON (|) the main power switch.
15. Clean and sanitize the unit before using it for the rst time as
instructed in the CLEANING section. Verify that the unit is operating
properly according to the operating instructions.
SETTING THE TIMER CLOCK*
CAUTION:
• Set the timer only with the main power switch in the
OFF (O) position.
• Turn the timer wheel only in the clockwise direction.
• Do not set the timer using any kind of tool.
1. With the main power switch off, turn the outer wheel on the timer
clockwise until the correct time (AM or PM) lines up with the arrow on
the clock face.
2. Turn on the main power switch to start the clock.
IMPORTANT: The clock/timer is equipped with a backup circuit
and continues to keep time for 10 to 15 minutes after power is
interrupted. If the power cord is disconnected or the main power
switch is turned off for a longer period of time, the clock will need
to be reset when power is restored.
Main Power Switch Location
Turn outer wheel
clockwise to set
1
12
2
3
4
5
AM
7
9
8
9
10
11
11
12
12
10
9
8
3
5
6
1
4
3
2
Clock Set to 9:05 PM
7
PM
TIMER OPERATION*
Use the timer to start the unit automatically. This feature allows you to pour
the mix in ahead of time and have the frozen beverage ready to serve at
the programmed time (unattended operation). The timer determines when
the unit is in standby (night) mode or freeze mode. In standby mode the
mixture is kept cool, but does not freeze.
The unit comes from the factory set for manual (non-timer) operation.
When all of the timer tabs are ipped outward (see diagram, right),
the timer is disabled and the unit will freeze the mixture any time the
refrigeration switch is set to ON (|).
Setting Up the Timer
1. With the main power switch off, ip the timer tabs next to the time
marks on the timer to either the standby or freeze position. The unit
will operate in the mode selected during the corresponding time
period.
2. Check to make sure the clock is set to the current time, then turn ON
(|) the main power switch.
*Models CFB2 and CFB3 only.
Timer tabs
2
3
4
5
AM
7
9
8
9
10
11
Timer tab in
freeze position
1
12
11
12
12
10
9
8
7
PM
Timer tab
in standby
(night)
position
3
5
6
1
4
3
2
Timer Side View
Page 3
OPERATING INSTRUCTIONS
WARNING:
• Keep body parts and other items clear of the inside of the mixing bowl when the main power switch is
ON (|). Keep the mixing switch in the OFF (O) position whenever the mixing bowl lid is removed.
• Do not use the machine to freeze water alone.
• Use only slush mixtures with the required sugar content (see below).
• Do not use this unit with milk/dairy based mixes unless it is equipped
with a temperature display. Do not leave milk/dairy based mixtures in
the unit without the main power switch on and the refrigeration switch
set to standby (|) or freeze (||).
• Never pour hot liquids (above 77°F/25°C) into the mixing bowl.
• Do not ll the mixing bowl higher than the MAX LEVEL indicator.
Wilbur Curtis Co., Inc.
Temperature
display
Concentrate
Water
MAX
LEVEL
1. If using the unit to dispense a slush type frozen beverage, dilute and mix the
slush concentrate with water in a clean container. Follow the concentrate
manufacturer’s directions. THE MIXTURE OBTAINED MUST HAVE A
MINIMUM SUGAR CONTENT OF 13°Bx and less than 22°Bx (11 to 20% sugar
by weight). The capacity of each mixing bowl is 3 gallons (12 liters). If using the
unit to dispense a milk/dairy based frozen beverage, use the mix according to
the instructions on the package.
2. With the mixing switch in the OFF (O) position, remove the
mixing bowl lid from the desired bowl and hang it on the side.
Pour in the mix up to, or below the MAX LEVEL indicator. The
minimum level is just above the plastic mixing auger.
3. Replace the mixing bowl lid.
1
4. Make sure that the main power switch is ON (|). Push (|) on
the mixing switch for the desired mixing bowl to turn on the
mixer.
5. Push (|) on the refrigeration switch for the desired mixing
bowl to begin freezing. NOTE: On units equipped with a
timer, when the refrigeration switch is in position (|), the unit
will freeze the mixture provided the timer is set to freeze
for the current time (see Setting the Timer). Standby mode,
position (||) on the refrigeration switch, may be used to put
the unit in standby mode manually. This mode saves energy,
keeping the mixture cool without freezing.
Mixing
Refrigeration
2
3
Page 4
4
5
Service Manual - Frozen Beverage Dispenser
MAX
6. Once the mixture is frozen (40 to 90 minutes), pull out on the top of the dispenser lever or push the bottom of the lever to
dispense.
CAUTION: If the tank is lled with a milk or dairy based mix, dispense a small amount of the product from the tap into a separate
container before dispensing the serving for the customer.
7. Push (|) on the light switch to turn on the integral lid lights.
or
6
7
How to Read the Digital Temperature Display (Some Versions)
The temperature display indicates the temperature in the mixing bowls. The display changes every three seconds to show
the temperature in a different bowl. The dot at the bottom of the display indicates the bowl temperature that is currently being
displayed. See the diagrams below for more information. The bowls are numbered 1, 2 and 3*, left to right, facing the front.
NOTE: If the display shuts off, it can be reset by pushing the down arrow button (▼).
1 2 3 1 2 31 2 3
Bowl 1 display
indicator
Bowl 2 display
indicator
Bowl 3 display
indicator*
*CFB3 only
Adjusting Beverage Thickness
Use the adjustment screws at the back of each mixing bowl to adjust beverage
thickness. The recommended (factory default) setting is 2. Insert a at blade
screwdriver into the adjustment hole as shown and turn to adjust. The indicator on the
back will move to indicate the thickness level. The higher the number the thicker the
frozen beverage will be.
IMPORTANT: When the thickness level is set to higher levels, (around 4) the lid
should be fastened to prevent it from coming off during operation.
1
2
Periodic maintenance
Have the unit checked periodically (at least once a year) by a qualied technician to
ensure proper operation.
3
MAX
4
1
2
3
MAX
4
Back
1
2
3
4
Page 5
Wilbur Curtis Co., Inc.
CLEANING
WARNING:
• To avoid personal injury, disconnect the power cord before cleaning. Wear protective glasses and
gloves.
• Never spray water on the unit to clean it.
• Do not use cleaning liquids, compounds or powders containing chlorine (bleach), solvents, scouring
powder,
ammable materials or corrosives. These products promote corrosion and will damage the
surfaces. USE OF THESE PRODUCTS WILL VOID THE WARRANTY.
• DO NOT immerse the unit or parts in water or any other liquid, unless specically instructed to do so.
Do not wash any of the components in a dishwasher. Hand or air dry the parts only.
Daily Cleaning
Clean and sanitize all of the bowl assemblies at least once a day according to the following steps. These operations may need to
be performed more frequently based on the mix used. Contact the concentrate/mix supplier for more details. If the machine is not
used continuously throughout the day, wipe the tap areas with a clean cloth and sanitizing uid. If the dispenser has not been used
for a long period of time, clean the unit before returning it to use.
1. For cleaning, prepare a mild solution of detergent and warm water.
Empty the Drip Trays
The drip trays should be emptied and cleaned every day and drained every time the red full indicator pops up. They must also be
removed before emptying the bowl.
2. Lift each drip tray up and out.
3. Wash the trays and grills with the detergent solution. Hand dry all of the components, then reinstall the grills. Set the trays aside
and reinstall at the end of the daily cleaning process.
Full indicator
2
Empty the Bowl
Empty each bowl before cleaning (if already empty, skip to step 7).
4. Place a large empty container under each dispenser tap.
5. Turn the main power switch to the ON (|) position. Turn the mixing switches to
the ON (|) and the refrigeration switches to the OFF (O) position. Pull out on each
dispenser lever to drain the contents out of each bowl. NOTE: If the beverage
mixture is not frozen, hold the container up to the bottom of the tap to reduce
splashing.
6. Once the bowls are empty, switch the main power switch OFF (O). Unplug the
power cord from the electrical outlet.
Page 6
54
Service Manual - Frozen Beverage Dispenser
Remove the Mixing Bowls and Lids
7. Remove the handle assembly from the bowl tap by pushing in on the top of the handle with
your thumb while pulling up on the bottom with your index nger.
8. Disconnect the lid light plugs from the sockets behind the mixing bowl. Make sure that the
plugs do not come into contact with liquids while removed. Lift off the lids.
9. Raise the front part of each bowl to release. Remove each bowl from its seat by pushing and
tapping lightly on the rear.
NOT immerse the top portion of
the lid in uids of any kind.
CAUTION:
To prevent damage, DO
Clean the Mixing Bowl Parts
10. Pull forward on each auger to remove it from the evaporator. Remove the auger seal (A).
11. Pull the bowl seal (B) off of the back of the bowl.
12. Pull the bottom part of the lids free from the top parts.
13. Soak the bottom part of the lids, removed in step 12, and the tap parts and auger in detergent solution and scrub with a soft
cloth. Rinse in fresh water.
14. To clean the top portions (lighted part) of the lids, use a clean, damp cloth soaked with detergent solution. Using a clean, damp
cloth, wipe clean the outside portion of the lid top. Wipe with a clean, damp cloth soaked in fresh water.
15. Clean the mixing bowls and evaporators with a clean damp cloth soaked with detergent solution. Wipe with a clean, damp cloth
soaked in fresh water.
continued...
987
10 11 12
Page 7
Wilbur Curtis Co., Inc.
Daily Cleaning (Cont.)
Sanitizing
16. Fill a container with a sanitizer solution mixed in water (2% of sodium hypoclorite mixed in water).
17. Using a sponge dipped in sanitizing solution, sanitize the underside of the bottom portion of the lids. Allow 30 minutes for the
solution to act.
18. Rinse the underside of the lid bottoms with a clean sponge soaked in fresh water. Place the lids on a clean surface and hand
dry, rst the underside, then the outside, using a clean cloth.
19. Thoroughly wash the bowl and evaporator with a sponge soaked in the sanitizer solution. Rinse thoroughly with clean water.
20. Fill another container with sanitizer solution and submerge the tap parts, augers and seals in the sanitizer solution. Leave them
to soak in the solution for 30 minutes. Rinse thoroughly with clean water, then air dry.
Reassemble the Unit
21. Check the seals before reinstalling. Replace worn seals with new ones before reinstalling. Replace all seals and gaskets at
least once a year.
22. Install each auger seal on each auger.
23. Using food grade lubricant, lubricate the inside of the auger seal.
24. Reinstall the augers. Rotate each auger until it engages completely.
25. Install an evaporator seal on the back of each bowl. The circular lip on the back of the bowl ts into the groove on the seal.
26. Set the mixing bowls back in place. Make sure that the lip on the bottom of each bowl rests inside the front trim on the top of
the chassis.
27. Lubricate the tap mounting slots on the front of each mixing bowl with food grade lubricant.
gaskets may result in leaks.
IMPORTANT: Failure to
properly lubricate seals/
22
Seal
groove
Lip
25 26 27
Page 8
23 24
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