Follett VU155K User Manual

Installation, Operation and Service Manual

VU155K Integral Cold Carbonation Series

Ice and Beverage Dispensers

00119610R00

801 Church Lane • PO Box D, Easton, PA 18044, USA
Toll free [phone] • (888) 2-FOLLETT
[phone] • Fax [phone] • www.follettice.com

Following installation, please forward this manual

to the appropriate operations person.

Order parts online
www.follettice.com

Service numbers above B50000

U

U

L

®

L

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Welcome to Follett Corporation
Important cautions
Specifications
Installation

Installing dispenser in counter
Field wiring diagrams
Installing optional icemaker
Connecting beverage lines

Operation

How the dispenser works
Cleaning

Service

Dispense chute cover removal
Auger motor assembly removal
Gate assembly removal
Auger and auger tube removal
Dispenser wheel removal
Wiring diagrams

Troubleshooting
Replacement parts

Table of contents

Follett Corporation
Equipment Return Policy

Follett equipment may be returned for credit under the following conditions:

1. The equipment is new and unused.

2. A return authorization number has been issued by customer service.

3. Follett receives the equipment at the factory in Easton, PA within 30 days of the issue of the return authorization number.

4. The equipment must be returned in Follett packaging. If the packaging has been damaged or discarded, Follett will forward, at the customer’s
expense, new packaging.

Note: Return freight charges are the responsibility of the customer. If equipment is returned and is damaged because of improper packaging, Follett

Corporation will not be held responsible.

Credit will be issued when:
The equipment has been inspected by Follett and deemed suitable to be returned to stock.

Note: A 15% restocking charge will be deducted from the credit. If the cost to return the product to stock exceeds 15%, the actual cost will be deducted.

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Welcome to Follett

Follett ice dispensers enjoy a well-deserved reputation for excellent performance, long-term reliability and
outstanding after-the-sale support. To ensure that this dispenser delivers that same degree of service, we ask
that you take a moment to review this manual before beginning the installation of the dispenser. Should you have
any questions or require technical help at any point, please call our technical service group, [phone] or
(888) 2-FOLLETT or [phone].

Before you begin

After uncrating and removing all packing material, inspect the equipment for concealed shipping damage. If
damage is found, notify the shipper immediately and contact Follett Corporation so that we can help in the filing of
a claim, if necessary.

Check your paperwork to determine which model you have. Follett model numbers are designed to provide
information about the type and capacity of Follett ice dispensing equipment. Following is an explanation of the
different model numbers in the VU155K series.

Important cautions

Storage area of dispenser contains mechanical, moving parts. Keep hands and arms clear of
this area at all times. If access to this area is required, power to unit must be
disconnected first.

Ice is slippery. Maintain counters and floors around dispenser in a clean and ice-free condition.

Ice is food. Follow recommended cleaning instructions to maintain cleanliness of delivered ice.

Always disconnect power before cleaning or servicing the dispenser.

Failure to remove all sanitizer may result in health hazard.

Follett manual load dispensers can accommodate most cube/cubelet ices up to 1" square, or Follett
compressed nugget ice. Crushed, flake, bagged, nugget or congealed ice cannot be used. Use of
these ices can jam dispenser and void warranty. Separate any “waffle-like” sections of cubes before
adding to dispenser. For ice compatibility questions, please call Follett customer service at
[phone] or (888) 2-FOLLETT or [phone].

!

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VU155K8LP

Ice and valve actuation

Tower side (facing unit)

L – Left hand side
R – Right hand side

Beverage cooling

K – Integral beverage cooling with cold carbonation

Model series

P – Pushbutton
L – Lever

Number of valves

0 (N series only), 8 or 10

Specifications

Electrical

Each icemaker and dispenser require a separate circuit with with electrical disconnect within 10 ft (6m).
Equipment ground required. Standard electrical – 115V, 60Hz, 1 phase. Maximum dispenser fuse – 15 amps,
Maximum icemaker fuse – 20 amps each.

Model Icemaker Dispenser
number amperage amperage

VU155K series 11.0 amps ea 8.7 amps

Plumbing

Dispenser 3/4" PVC pipe nipple for bin drain

3/4" PVC pipe nipple for drain pan drain

1" ID hose for beverage bath drain

Beverage connections

1/4" ID syrup beverage hose

3/8" 45° flair fitting for water inlet

1/4" ID CO

2

3/8" ID plain water inlet

Note: Set CO2 pressure to 75 psi and syrup pressure to 60 psi.

Drains should be hard piped and insulated. Maintain at least 1/4" per foot (6mm per 304mm run)
slope on drain line run.

Water disconnect within 10 feet (3m) of dispenser is suggested for automatic load units.

Follett recommends use of a Follett model AFSYSTMFL4S water filter on icemakers connected
to automatic fill dispensers.

Icemaker Refer to detailed specifications in icemaker installation manual packed with icemaker

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Dimensions and clearances

Required clearances

51" (1295mm) minimum above counter for installation if dispenser will be dropped into counter

36" (915mm) minimum above counter for all units after installation for auger cleaning and servicing

12" (305mm) minimum on side opposite ice chute for service

12" (305mm) minimum on ice chute side if ice transport tube enters this side

12" (305mm) minimum between dispenser side(s) and optional icemaker(s)

6

ice
transport
tube

17"

(432 mm)

Front View

counter top

18.875"
(479mm)

6"

min

37.25"

(947mm)

(10 valve unit)

31.25"

(794mm)

(8 valve unit)

beverage line

carbonation pump

air break*

3/4 PVC slip
joint drain

electrical
connections

18.875"
(479mm)

Dispenser with 1 optional auto-fill icemaker kit(s)
Dispenser with 2 optional auto-fill icemaker kit(s)

12"
min

Manual load unit

21.75"

(553mm)

49.75"

(1264mm)

28"

(712mm)

*DO NOT

CONNECT TO

DRAIN SYSTEM

Side View

ice transport
tube entrance

25.8"

(656mm)

3.5"

(889mm)

18.5"

(470mm)

8.75"

(223mm)

27.375"

(696mm)

power

bin

signal

beverage
waterbath
overflow

beverage
drain pan
drain

3/4 PVC
slip joint

drain

6"

(153mm)

Installation

Installing dispenser in counter

Note: All dispensers must be supported from below with supplied 6" – 9" (153 – 229mm) adjustable leg accessory,

or equivalent. Do not hang dispenser on flange.

All dispensers must be installed level in both directions to ensure proper operation.

1. Check that dispenser location meets all requirements in this manual and cut counter as shown.

2. Place support blocks in cabinet to raise dispenser to a height of 12" (305mm).

3. Place dispenser in counter onto support blocks.

4. Attach adjustable legs to dispenser.

5. Remove support blocks and lower dispenser feet to floor.

6. Adjust legs for 1/8" (4mm) clearance between dispenser lip and countertop to verify there is no load on flange.

7. Apply a bead approximately 1/4" (6mm) in diameter of NSF-listed silicone sealant (Dow Corning RTV-732 or
equivalent) around perimeter of dispenser where it meets counter. Smooth sealant to a 1/8" (4mm) radius.

8. Install a PVC drain line with at least a 1/4" per foot (20mm per 1m) slope. Insulate drain line to prevent
condensation.

Note: Do not apply excessive heat if any sweating of fittings is necessary. Heat conduction through metal may

melt threads in plastic drain.

Do not reduce drain line size or tie drains together.

Note: See instruction enclosed with carbonator pump for detailed installation instructions.

9. Use supplied bolts and lock washers to attach carbonator pump assembly to side of dispenser opposite ice
dispense tower. Tighten bolts securely.

10. Connect the 3/8" water line from the dispenser to the 3/8" male flare pump outlet connection.

11. Trace the pump power cord to identify the pump twist lock plug and connect to the female twist lock connector on
the dispenser.

12. Make electrical connections in accordance with applicable wiring diagrams provided. Provide disconnects within

10 ft (3m) of dispenser and icemaker for servicing.

Plan View

units with up to 8 valves

counter cut-out

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Plan View

units with 10 valves

counter cut-out

30.375"

(772mm)

+.125"

- .125"
+3 mm

- 3 mm

Front of counter

26.25"

+.125"

- .125"

(667mm)
+3 mm

- 3 mm

36.375"

(924mm)

+.125"

- .125"
+3 mm

- 3 mm

26.25"

+.125"

- .125"

(667mm)
+3 mm

- 3 mm

Front of counter

Field wiring diagrams

Note: Field wiring diagrams are intended to aid electricians or technicians in understanding how equipment

works. All field wiring must be installed in accordance with all local and NEC codes.

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Installing optional auto-fill icemaker kit(s)

Correct installation of remote icemaker(s) is critical to proper performance of icemaker. Refer to installation
manual packed with icemaker for important details on ice transport tube run, ventilation requirements and other
installation requirements. Failure to comply with instructions may void warranty.

To start and operate dispenser

1. Follow detailed cleaning instructions in service manual before operating dispenser.

2. On units with Follett integral ice water bath beverage cooling (“B” models) only, slowly pour water into ice
water bath area to fill empty bath and submerge coils. Coils are submerged when water starts to flow out
overflow drain. DO NOT SPLASH WATER ON ELECTRICAL BOX. Once filled with water, add ice to bath
until ice covers top of water bath.

3. For manual load units, remove front drain pan or rear lid and fill storage area with approved ice.

Note: Follett manual load dispensers can accommodate most cube/cubelet ices up to 1" square, or Follett

compressed nugget ice. Crushed, flake, bagged, nugget or congealed ice cannot be used. Use of these
ices can jam dispenser and void warranty. Separate any “waffle-like” sections of cubes before adding to
dispenser. For ice compatibility questions, please call Follett customer service at [phone]
or (888) 2-FOLLETT or [phone].

4. Turn power switch located on dispenser control box to ON position.

5. For automatic fill units, follow detailed instructions in icemaker installation section of installation manual, then
turn icemaker (bin signal) switch(es) located on dispenser control box to ON position and begin to make ice.

6. When dispenser has at least 6" (153mm) of ice in storage area, test operation.

If attaching
optional icemaker
accessory

DISPENSER

LEFT JUNCTION BOX RIGHT JUNCTION BOX

Electric
Power
Source

GND
GRN

W

B

BL

Y

RD

ICEMAKER #1
(OPTIONAL)

LOWER JUNCTION BOX

ICEMAKER #2
(OPTIONAL)

LOWER JUNCTION BOX

B

W

W

B

ELECTRIC
POWER
SOURCE

ELECTRIC
POWER
SOURCE

UPPER JUNCTION BOX

GRN

GND

X

UPPER JUNCTION BOX

GRN

GND

X

LEGEND

WIRENUT FIELD

W

B

W

B

X

B

W

GRN

BL

Y

RD

CONNECTIONS
EQUIPMENT
GROUND

BLACK
WHITE

GREEN

BLUE
YELLOW
RED

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Operation

How the dispenser works

Follett’s dispensers are available in automatic load
configurations, fed from one or two Follett remote
icemakers or manual load configurations (using ice
from another source).

In all models, ice is stored below the counter in the
dispenser storage area. When the dispense lever
or button is pushed, the dispense motors are
activated. This causes the wheel assembly in the
storage area to turn, moving ice to the vertical
auger assembly, which carries ice up to the
dispense chute where it drops by gravity into the
container.

In automatic load units, ice is manufactured in
either one or two Follett remote icemakers. These
icemakers may be located up to 20 ft (6m) away
from the dispenser. Extruded ice is transported
through a tube and pushed to the storage
compartment of the dispenser. When the bin is
filled, a bin thermostat shuts the icemaker off to
avoid overfilling of the bin. The icemaker will
restart after 20 minutes if the bin is calling for ice.

Units with integral ice water bath beverage cooling
are equipped with a water bath timer circuit that
activates the water bath pump for 35 minutes
when ice lever or button is activated, or when the
ice water bath warms up and calls for more ice.

Connecting beverage lines

1. Connect syrup and water lines. Non-carbonated water line will be labeled “water”. Syrup lines are numbered
and correspond to the valves as shown in drawing(s) below. Valve one is always next to ice tower.

2. The center 4 valves are pre-plumbed to both carbonated and non-carbonated water lines with the
QuickCARB

™

beverage manifold. Valves can be individually changed from a carbonated to a non-carbonated

flavor with the flip of a lever (see below).

3. Clean and sanitize beverage lines according to cleaning instructions.

Ice movement

Valve position #1 is always next to ice

tower. Right-hand unit shown.

VU155B QuickCARB manifold

(see dispenser for model specific

QuickCARB configuration)

Rear View

7

8910

56

2

34

1

carbonated

non-carbonated

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Cleaning

Using solutions below, clean and sanitize storage area and beverage lines before starting unit and on a routine
basis as noted below.

Note: Always disconnect power before cleaning dispenser.

Do not run plastic parts through a dishwasher.

Solution A: Combine 1 oz (250ml) bleach with 2 gal (8L) hot water or use Ecolab Mikro-chlor Cleaner

per manufacturers instructions.

Solution B: Combine 1/4 oz (50ml) bleach with 2 gal (8L) hot water or use Ecolab Mikro-chlor Cleaner

per manufacturers instructions.

Note: Cleaning solutions temperature must be at 75˚ – 125˚F (24˚ to 52˚C)

Recommended cleaning prior to start up

Cleaning ice storage area before use

1. Refer to disassembly instructions (see Service section) and remove dispense wheel from ice storage area.

2. Remove auger, auger tube and dispense mechanism.

3. Wipe all components and ice storage area with cleaning Solution A.

4. Rinse all components and ice storage area thoroughly with clear, potable water.

5. Wipe all components and ice storage area with sanitizing Solution B.

Cleaning beverage lines

Prepare 6 gallons (23L) of cleaning Solution A. Fill a clean product tank with cleaning solution. Fill a second
clean product tank with potable rinse water.

1. Disconnect all syrup lines from product containers.

2. Connect syrup line #1 to cleaning solution tank, pressurize tank to 20-50 psi, and dispense 1/2
gallon (2L) of solution into a suitable container from valve #1.

3. Connect syrup line #1 to rinse tank, pressurize tank to 20-50 psi, and dispense 3 gallons (11L)
into a suitable container from valve #1.

4. Repeat this cleaning and rinsing for all syrup lines.

5. Remove diffusers and nozzles from valves, soak in cleaning solution, rinse well and reinstall.

Sanitizing beverage lines

Prepare 6 gallons (23L) of sanitizing Solution B. Fill a clean product tank with this solution.

1. Connect one tank to syrup line #1. Dispense 1/2 gallon (2L) from valve #1.

2. Repeat for all remaining syrup lines, allowing sanitizing solution to remain in all circuit lines for
15 minutes.

3. Connect a clean, empty tank (pressurized to 50 psi) to each syrup line and blow out sanitizer by
operating each valve.

4. Remove diffusers and nozzles from valves, soak in sanitizing solution for 15 minutes, rinse well and
reinstall.

5. Reconnect all lines and dispense product through valves to purge any remaining sanitizer.

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Recommended daily dispenser cleaning

1. Remove all debris from drain pan.

2. Pour 1 gallon (4L) hot water into drain pan to keep drain lines clear.

Recommended weekly dispenser cleaning

1. Remove drain pan and grille and wash with Solution A. Rinse thoroughly.

2. Remove nozzles and diffusers from valves, soak for at least 10 minutes in cleaning Solution A, rinse,
sanitize with Solution B and reinstall.

3. Pour a solution of one cup (8oz/237ml) household bleach mixed with one gallon (3.8L) hot water into
drain pan to help prevent algae growth in drain lines.

Recommended quarterly dispenser cleaning

1. Remove top from dispenser and turn power switch to OFF position.

2. Remove ice from storage area.

3. Remove dispense chute cover, chute, auger motor assembly, auger and auger tube (see Service section).

4. Remove drain pan, grille and dispense wheel (see Service section).

5. Clean all components and bin storage area with Solution A, rinse thoroughly with clear water and sanitize
with Solution B.

6. Remove nozzles and diffusers from valves, soak for at least 10 minutes in cleaning Solution A, rinse,
sanitize with Solution B and reinstall.

For units with integral ice-water bath beverage cooling only:

1. Remove dispenser lid and counter access panel opposite ice tower side.

2. Disengage service drain tube (on utility connection side of dispenser) from mounting bracket.

3. Pull bath service drain tube down through beverage line opening in counter and drain water bath into a bucket.

4. Use a bottle brush to clean coils with Solution A, rinse and sanitize with Solution B.

5. Reposition ice water bath drain tube in up position so water does not drain out.

6. Pour Solution A into ice water bath until it flows out of bath overflow drain.

7. Turn power ON to unit and dispense a small cup of ice to activate pump.

8. Allow pump to run for two minutes to clean pump and pump lines.

9. Turn power OFF.

10. Drain bath and replace drain tube in mounting bracket in up position to avoid siphoning water bath water.

Putting unit back in service after quarterly cleaning

1. On units with integral beverage cooling, fill ice water bath with water until water spills out of
bath overflow drain.

2. Reassemble components.

3. For manual load units, fill unit with an approved ice (see important cautions on page 4).

4. For automatic load units with R400A/W (R404A refrigerant) icemakers, turn bin signal switch(es) and
dispenser power switch to ON position and allow storage area to fill.

5. Dispense and discard all ice, verifying dispenser is functioning properly.

Recommended quarterly cleaning of optional icemaker.

Units equipped with optional icemakers require cleaning of icemaker system at least every six months, and more
often if local water conditions dictate. Failure to clean icemaker system will result in decreased performance and
potential damage to icemaker. Refer to Icemaker Installation, Operation and Service Manual.

Service

Dispense chute cover removal

1. Remove top cover.

2. Push chute cover up vertically to slip off
holding tab.

3. After clearing tab, pull chute cover forward
to remove.

Auger motor assembly removal

1. Remove top cover.

2. Remove one thumbnut on rear of motor bracket.

3. Lift motor bracket and motor up, unplug electric
quick disconnects and remove.

Dispense mechanism assembly removal (Fig. 2)

1. Remove top cover.

2. Remove chute cover (see above).

3. Remove auger motor assembly (see above).

4. Remove quick release pins from the ice chutes
and gates, then unplug wires from solenoids.

5. Lift dispense mechanism up and off auger tube.

Auger and auger tube removal (Fig. 3)

1. Remove auger motor and dispense mechanism
assembly (see above).

2. Pull auger upward to clear auger tube.

3. Lift auger tube upward to clear dispenser top.

4. Slide tube and bearing plate through auger

tube gasket.

Dispense wheel removal

1. Remove drain pan assembly and bin access
cover.

2. Remove center thumbnut and threaded rod on
dispense wheel assembly and lift wheel out
front access opening.

solenoid

quick
release
pin

quick
release
pin

gate

ice
chute

Dispense assembly, top view

(RH unit with bath shown)

RH, 8-valve unit

Front View

dispense
chute

drain pan
assembly

valves

chute
cover

top cover

Fig. 1

Fig. 2

wheel
motor

baffle

plate

wheel
motor

mounting

plate

dispense
wheel

auger
tube

auger

auger motor
Side View

auger

bearing

plate

stationery
agitator

rotating
agitator

dispenser
Front View

Fig. 3

12

2

13

Wiring diagram

L1

BLACK

POWER
SWITCH

BLACK

POWER

C

TOP LID
SWITCH

BLACK

PL1-1

NO

LID

C

DRAIN

PAN

SWITCH

BLACKGRAY

NO

GRAY

GRAY

C

REAR

LID

SWITCH

PL1-2

NO

READY

ORANGE

GREEN

RED
BLACK

CARB.

TANK

DISPENSE

R1

PURPLEORANGE

4

7

COUNTERCLOCKWISE ROTATION

PURPLE

MTR

AUTOFILL

R2

PURPLE

1

7

R2

ORANGE

96

MTR

PURPLE

READY

LID

BATH CONTROL

BOARD

L1 LOW HIGH COMMON

CARB.

PUMP

COM

CONTROL

AUGER MOTOR

PL2-1

REDRED

PL2-3

BLUE

BLUE

WHEEL MOTOR

COUNTERCLOCKWISE ROTATION

PL3-2

RED

RED

RED

PL3-1

BLUE

BLUE

PL2-2

WHITE

BLK

M1

PL3-3

BLK

M2

BLUE

WHITE

L2

PUMP

BATHPUMP MOTOR

BLK

(35 MIN ON DELAY)

PL5-2PL5-1

M3

WHITE

L2

CARBONATOR

PUMP

NO

WHT

FOR LEFT HAND MACHINEFOR RIGHT HAND MACHINE

L2

AUTOFILL

PURPLE

ORANGE

PURPLE

L2

AUGER MOTOR

CLOCKWISE ROTATION

PL2-1

RED

PL2-3

BLUE

R2

7

1

RED

PL3-2

BLUE

6 9

PL3-1

RED

BLK

M1

BLUE

WHEEL MOTOR

CLOCKWISE ROTATION

RED RED

BLUE

M2

BLUE

BLK

L2

PL2-2

WHITE

L2

WHT

PL3-3

PL6-1 PL6-3

24 V RED

RED

RED

RED

T

DISPENSE

RED

69

PL6-2

RED

2 3

BIN T'STAT

RED

AUTOFILL

PL1-3 PL1-4

C

DRAINPAN

SWITCH

BROWN

PL7-1

BEV HARN

BROWN

RED

DISPENSE

SWITCH

C

24VAC RED

BATH SOL

C

TEMP
SENSOR

R1

PL6-4

NO

KEYSWITCH

115 VOLTS

T1

24 VOLTS

BROWN

NO

BATH CONTROL BOARD

STATUS LIGHTS

GREEN - COLD

RED - WARM

BROWN

BLUE

18 MIN OFF

IM_#1

SWITCH

5 SEC ON

BLUE

RED

T-STAT

BLUE

BLUE

IM_#2

BLACK

Valve_1

BLACK

Valve_6

BROWN

24VAC YEL

BATH SOL

AUTOFILL

TIMER

2

1

3

BIN SIGNAL (24V)
ICEMAKER #1

BIN SIGNAL (24V)

ICEMAKER #2

24V JUNCTION BOX

Valve_7 Valve_8

DISPENSE RELAY

NO

NC

BROWN

Valve_3Valve_2

YELLOW

R1

B

A

YELLOW

BATH

SOLENOID

PL4-2

BLUE

(12 SEC ON: 1 MIN OFF)

DISPENSE
SOLENOID

PL4-3

AUTOFILL RELAY

R2

BA

Valve_4

Valve_9

BLACK

YELLOW

PL4-1

PL4-4

YELLOW

YELLOW

YELLOW

Valve_5

BLACK

Valve_10

YELLOW

YELLOW

PL7-2

24 V YEL

YELLOW

LEGEND:

TERMINAL STRIP CONNECTION

PIN and SOCKET CONNECTION

Symptom

Ice does not dispense.

• Auger motor does not run

• Wheel motor does not run

Ice does not dispense.

• Auger motor runs

• Wheel motor runs

• Gate does not open

Ice does not dispense.

• Auger motor does not run

• Wheel motor runs

Ice does not dispense.

• Auger motor runs

• Wheel motor does not run

Warm drinks or soda foaming.

No ice in dispenser.

Possible cause

1. Power switch faulty or in OFF
position; loose connection.

2. Faulty dispense switch.

3. Faulty transformer.

4. Drain pan ajar.

5. Faulty drain pan safety switch.

1. Loose electrical connection.

2. Linkage problem between
solenoid and gate.

3. Faulty solenoid.

1. Loose electrical connection.

2. Faulty auger motor.

3. Faulty run capacitor.

1. Loose electrical connection.

2. Faulty wheel motor.

3. Faulty run capacitor.

1. No ice in storage bin.

2. Water drained out of ice water
bath.

3. Circulating pump not running.

4. CO

2

pressure is set too high.

1. Power switch in OFF position or
faulty.

2. Bin signal switches in OFF
position or faulty.

3. Faulty bin thermostat.

4. Faulty transformer.

5. Icemaker related problem.

6. Faulty or disconnected wiring.

Solution

1. Turn power switch to ON position;
check connections.

2. Replace switch.

3. Replace transformer.

4. Check pan and reseat.

5. Replace switch.

1. Check connections.

2. Check linkage.

3. Replace solenoid.

1. Check connections.

2. Check auger motor.

3. Check run capacitor.

1. Check connections.

2. Check wheel motor.

3. Check capacitor.

1. Fill storage area with ice or check
icemaker operation.

2. Check that ice water bath drain
tube is in fixed upright position.

3. Check pump and PC board for
output.

4. Set CO

2

pressure to 75 psi.

1. Check switch and replace if
necessary.

2. Check switch and replace if
necessary.

3. Replace bin thermostat.

4. Replace transformer.

5. Refer to Icemaker Operation and
Service Manual for diagnosing.

6. Check for power and bin signal on
icemaker PC board.

Dispenser troubleshooting guide

Before calling for service

1. Check that ice is in the dispenser and that congealed cubes are not causing a jam.

2. Check that circuit breaker and switches are in ON position.

3. Check that drain pan, rear lid and top are on securely. If ajar, dispenser will not operate. When the top is off,
auger does not operate, even though the solenoids do (page 17).

4. Check that all drains are clear.

Note: For units equipped with Follett compressed nugget icemaker, see Icemaker Operation and
Service Manual for service and troubleshooting information.

14

Symptom

Carbonator pump not turning on.

Carbonator pump is not turning off.

Carbonation system is not
carbonating.

Carbonation system is producing
excessively carbonated beverages.

Possible cause

1. Loose connection.

2. Electrode connections on
carbonator tank are satisfied.

3. Carbonator pump or level
control board is defective.

1. Loose connection.

1. Loose connection.

2. CO

2

pressure.

3. Water pressure is too high.

4. Carbonator pump is defective.

1. CO

2

pressure is set too high.

2. Drinks may be warm.

Solution

1. Check carbonator pump power at
plug and at level control board.

2a. Check connection between low

level electrode and level control
board.

2b. Check ground wire on carbonator

tank.

3. Replace pump/control board.

1a. Check connection between high

level electrode and level control
board.

1b. Replace electrodes/control board.

1. Check all CO

2

and water

connections.

2. Set CO

2

pressure to 75 psi.

3. Lower water pressure to
approximately 50 psi.

4. Replace pump.

1. Set CO

2

pressure to 75 psi.

2. See “warm drinks” symptom.

If problems persist after following this basic troubleshooting guide, call Follett’s
technical service department at [phone] or (888) 2-FOLLETT
or [phone].

15

16

Condition Pump Solenoids Auger Wheel Beverage

valves

Top lid off OFF ON OFF OFF ON

Rear lid off ON ON OFF OFF ON

Drain pan off ON ON OFF OFF OFF

On/OFF switch
in off position OFF OFF OFF OFF OFF

Beverage
switch in OFF
position ON ON ON ON OFF

Operational Status

The chart below shows the operational status of various parts when certain switches are turned off or accessories
are removed.

Electrical box
Front View

Water bath circuit board operation

The temperature sensor is hard wired directly to the circuit board. The waterbath circuit board operates on 24
volts AC. The bath pump will run for 35 minutes whenever ice is dispensed or the bath calls for ice.

Optimal beverage temperature is controlled by the circuit board located in the electrical box. The board monitors
the waterbath temperature and holds it to a factory setting. When the Red

LED is ON, the bath solenoid, auger
motor, wheel motor and bath pump are energized. Ice will be dispensed into the waterbath for 12 seconds, then
stop for 60 seconds. The pump will stay energized, and the circuit board will then monitor the water
temperature. If it is below the set point, the Green

LED will come on, the Red LED light will go off, and ice will
not dispense into the waterbath. If the temperature of the bath is determined to be above the set point, the Red
LED will remain on. The circuit board has a delay of 60 seconds before more ice is dispensed into the
waterbath.

LED indicators:

Green

– the waterbath is at the set temperature.

Red – the bath temperature is above the set temperature and the bath is calling for ice.

Flashing LED indicators:

Flashing Red and Green

– the circuit board has gone into an error mode:
Alternate flashing – circuit board has power and is waiting for hopper cover and dispenser top to be
replaced.
Simultaneous flashing – the waterbath did not reach set temperature in 40 minutes. Reset this error
mode by turning power off, removing top lid, drain pan or rear lid.

power on/off
switch

#1 #2

icemaker
switches

probe

warm/red LED

cold/green LED

bev. bath
indicator

0

0
I

0

I

I

Replacement parts

Reference # Description Part #

1 Lid, 8 valve unit (includes “Follett” label) 502436
1 Lid, 10 valve unit (includes “Follett” label) 502437
2 Label, “Follett” 502438
3 Cover, dispense chute, lever operation 502439
3 Cover, dispense chute, push-button operation (includes button) 502440
4 Switch, push-button operation 502441

5 Backsplash, RH unit, 8 valves 502445
Not shown Backsplash, LH unit, 8 valves 502444
Not shown Backsplash, RH unit, 10 valves 502443
Not shown Backsplash, LH unit, 10 valves 502442

6 Drain pan, 8 valve unit 502446
Not shown Drain pan, 10 valve unit 502447

7 Grille, drain pan, 8 valve unit 502450
Not shown Grille, drain pan, 10 valve unit 502451

8 Cover, ice storage bin, rear — all U155 units (except N units) 502452
Not shown Cover, ice storage (under drain pan) — all U155 units 502453

9 Switch, key lock for valves 501409
Not shown Key, beverage lock switch 501286

10 Panel, end, beverage, RH unit 502584
Not shown Panel, end, beverage, LH unit 502583
Not shown Panel, access, RH and LH units 502585
Not shown Panel, rear, motor support, RH unit 502586
Not shown Panel, rear, motor support, LH unit 502587
Not shown Panel, front, dispense mechanism, RH unit 502588
Not shown Panel, front, dispense mechanism, LH unit 502589
Not shown Panel, rear, 8 valve 502590
Not shown Panel, rear, 10 valve 502591

11 Label, ice, dispense cover, push-button 502623
Not shown Label, ice, dispense cover, lever 502622
Not shown Clip, Tinnerman, 10-32 502621

12 Thumbscrew, backsplash, 10-32 x 1/2 501100
Not shown Legs, 6" (153mm) adjustable to 9" (229mm) — set of 4 502454
Not shown Screw, 10-32 x 1/2 502287
Not shown Plug 2 lead, male 502333
Not shown Plug 2 lead, female 502334

Top View

8 valve unit with right hand (RH) tower

Front View

8 valve unit with right hand (RH) tower

(push-button dispensing)

8

7

1

2

6

9

5

1

4

3

10

12

11

Dispenser exterior

17

Dispense assembly, Side View

(RH unit with bath shown)

Reference # Description Part #

1 Gate, dispense 502455
2 Linkage pin, gate/solenoid 502456
3 Pin, quick release, 3" (77mm), bath gate and lever 501949
4 Pin, quick release, 5.53" (141mm), dispense gate 502102
5 Solenoid (includes linkage pin) 00126607

6 Dispense mechanism assembly, bath, RH unit 502448
Not shown Dispense mechanism assembly, bath, LH unit 502449
Not shown Dispense mechanism assembly, non-bath RH unit 502458
Not shown Dispense mechanism assembly, non-bath, LH unit 502496

7 Spring, dispense mechanism (1 per side) 501950

8 Chute, ice 502457

9 Wrap, dispense mechanism 502607

10 Bushing, Ni liners 501249
11 Screw, 8-32 x 5/16 502625

12 Pin, spring 502624
Not shown Push pins, clear chute 502618
Not shown Chute, focus — clear plastic 502459
Not shown Lever, dispense 501953

6

7

8

2

5

Dispense assembly

Top View

8

11

9

12

5

2

12

3

10

1

10

4

10

1

10

7

11

18

Reference # Description Part #

1 Pump, water bath (includes mounting plate and elbow) 00111476
2 Elbow, overflow drain, 1" (26mm) x 3/4 MPT 502465

Not shown Elbow, clean-out drain, 3/8" (10mm) x 3/8 MPT 502466

3 Coil, syrup 00125864
4 Valve, QuickCARB assembly 00126979
5 Coil, carbonated water, 8 valve 00119792

Not shown Coil, carbonated water, 10 valve 00119560

6 Coil, carbonated, outer, 8 valve 00119867

Not shown Coil, carbonated, outer, 10 valve 00119560

7 Coil, water, non-carb, inner, 8 valve 00119875

Not shown Coil, water, non-carb, inner, 10 valve 00125435

8 Manifold, carbonated water, 8 valve 00207539

Not shown Manifold, carbonated water, 10 valve 00207540

9 Manifold, water, 8 valve 00123331

Not shown Manifold, water, 10 valve 00123141

10 Shield, splash, RH 00125435

Not shown Shield, splash, LH 00125393

11 Pump, discharge assembly, LH, 8 valve 00127001
Not shown Pump, discharge assembly, RH, 8 valve 00127019
Not shown Pump, discharge assembly, LH, 10 valve 00127027
Not shown Pump, discharge assembly, RH, 10 valve 00127035

12 Bracket, mounting outlet 00111633

13 Water probe, low level (black) 00107417

14 Bracket, carbonation tank 00106625

15 Elbow, 3/8" swivel (includes 00107433, 00107490) 00107425

16 Washer, seal, 3/8" (black) 00107433

17 Check valve, 3/8" (includes 00107433) 00107532

18 Elbow, 1/4" swivel (includes 00107466, 00106914) 00107458

19 Washer, seal, 1/4" (white) 00107466

20 Check valve, 1/4" (includes 00107466) 00107540

21 Pressure relief valve 00107482

22 Bracket, pump hose (includes 506627) 00111351

23 Screw, 8 x 1/2, stainless 502627

24 Carbonator tank 00107508

25 Water probe, high level (red) 00107409

Top View

Side View

Waterbath

21

15

18

19

20

13

25

24

16

16

17

9

4

2

3

23

Carbonator tank – Side View

19

12

1

8

5

6

7

11

15

14

14

10

20

Reference # Description Part #

1 Auger, LH unit (black, stamped with “1”) 502491

Not shown Auger, RH unit (gray, stamped with “2”) 502492

2 Tube, auger, LH unit with beverage bath 502486
Not shown Tube, auger, RH unit with beverage bath 502485
Not shown Tube, auger, RH unit without beverage bath 502487
Not shown Tube, auger, LH unit without beverage bath 502488

3 Wheel, dispense (includes stud and rotating agitator) 501681

4 Baffle (under dispense wheel) 501684
Not shown Drive bar (under dispense wheel) 501682

5 Motor, vertical auger 502476

6 Motor, wheel 502560
Not shown Seal, wheel motor 501333
Not shown Spacer, wheel motor 501768
Not shown Capacitor, wheel motor 501782

7 Agitator, rotating, 21" (534mm) long 502484

8 Plate, wheel motor mounting 502615

9 Agitator, stationery 502490

10 Plate, auger bearing 501696
Not shown Bracket, ice tube, double tube 502497
Not shown Ice transport tube (sold by the foot) 500366
Not shown Ice transport tube, 10 ft 502522
Not shown Ice transport tube, 20 ft 502523
Not shown Insulation, transport tube (sold by the foot) 501176
Not shown Cover, blank ice entry 502674
Not shown Thermostat 501432
Not shown Gasket, ice entry 502673
Not shown Plate, ice entry, 2 holes 502674

11 Union, 3/8" (includes 00107433) 00107516

12 Shelf, carbonator pump 00106658

13 Pump, carbonator (includes 00106658, 00109355) 00107524
Not shown Mounting screws & fittings, carbonator pump 00109355

Hopper

9

6

7

4

8

3

2

1

5

10

Side view

11

13

12

2

Reference # Description Part #

Auger motor/drive assembly, vertical (includes all items below) 502493
1 Motor, vertical auger (includes gearbox and capacitor) 502476
2 Chain, auger drive #35, 40p 502477
3 Sprocket 35#, 22T 5/8 bore 502478
4 Sprocket 35#, 12T 5/8 bore 502479
5 Drive shaft 502480
6 Bearing, auger, upper and lower 501314
7 Cover and bearing, chain drive (includes 501314) 502481
8 Capacitor, 25mf, 270V 501550
9 Key, Woodruff 502482

10 Washers, thrust, (4) 501765
11 Mounting plate, auger motor (includes 501314) 502483

Auger motor

7

6

1

8

4

3

2

11

10

5

Side View

Top View

9

6

21

Reference # Description Part #

1 Transformer, 24V 502058
2 Relay, auto fill 501826
3 Relay, dispense 501826
4 Timer, auto fill (automatic fill units) 502471
5 Strips, terminal 502472
6 Switches (power and icemaker) 502209
7 Board, circuit and probe (one unit) 502473
8 Bracket, probe 502474

9 Switch, safety 502511
Not shown Switch, safety, rear cover assembly, LH unit 502498
Not shown Switch, safety, rear cover assembly, RH unit 502499
Not shown Switch, safety, drain pan assembly, LH unit 502500
Not shown Switch, safety, drain pan assembly, RH unit 502501
Not shown Switch, dispense, lever 502505
Not shown Bracket, safety switch, rear 502608
Not shown Bracket, safety switch, drain pan, RH 502609
Not shown Bracket, safety switch, drain pan, LH 502610

Not shown Thermostat, bin level 500514

10 Control board, cold carbonation 00106708

Electrical components

circuit board

Top View

Front View

#1

#2

2

5

1

5

4

3

9

6

7

6

8

Side View

10

10

7

22

COM

N.O.

HIGHLOWCOMN.O.N.C.COM

III

000

BEV. BATH INDICATOR

COLDWARM

LID

PUMP

L2 (WHT)

BEVERAGE BATH CONTROL BOARD DETAIL

MTR

ready

(orange)

NO

NC

C

24VAC (RED)

24VAC (YEL)

LOW HIGH COM

N.O. COMN.C. INPUT VOLTAGE

COLD CARBONATION LEVEL CONTROL BOARD DETAIL

23

00119610R00

04/04

801 Church Lane • PO Box D, Easton, PA 18044, USA
Toll free [phone] • (888) 2-FOLLETT
[phone] • Fax [phone] • www.follettice.com

U

L

®

U

L

®

C