Follett REF20-LB Setup guide

Installation, Operation and Service Manual
Serial numbers J62764 and above
REF 20/25 – LB
REF 20/25 – PH
REF 20/25 – BB
Order parts online
www.follettice.com
01134592R15
HEALTHCARETM
801 Church Lane • Easton, PA 18040, USA
Toll free [phone] • [phone]
www.follettice.com/healthcare
Following installation, please forward this manual
totheappropriate operations person.

201134592 – REF20/25 LB, PH, BB
Contents
Welcome to Follett. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Before you begin............................................................................... 3
Refrigeration System ........................................................................... 4
Ambients ..................................................................................... 4
Clearances ................................................................................... 4
Electrical specications ......................................................................... 4
Refrigeration specications...................................................................... 4
Detail drawing ............................................................................. 5
Installation .................................................................................... 6
Adjust self-closing door...................................................................... 6
Install shelves (if equipped) and power up ....................................................... 7
Fill product bottle........................................................................... 7
Power the Unit............................................................................. 7
Controller Operation ........................................................................... 8
Use and care of the LCD touchscreen .......................................................... 8
Chart recorder set up (if so equipped) ......................................................... 15
Removing drawers ........................................................................ 15
Removing slides .......................................................................... 16
Network Enabled Device ................................................................... 16
Cleaning ..................................................................................... 16
Interior cleaning .......................................................................... 16
Exterior cleaning .......................................................................... 16
Annual cleaning .......................................................................... 17
Defrosting ............................................................................... 17
Service - System Controls ..................................................................... 18
Controller Operation ....................................................................... 18
Sensor Readings/Temperature Display ........................................................ 18
Heated door (option)....................................................................... 18
Facade removal ............................................................................... 19
Controller replacement......................................................................... 19
Reversing the door swing (requires a new door) ................................................... 20
Door gasket replacement ....................................................................... 20
Slide-out unit cooler ........................................................................... 20
Wiring diagram ............................................................................... 21
Refrigeration System .......................................................................... 22
Facade ................................................................................. 30
Door assembly ........................................................................... 32

01134592 – REF20/25 LB, PH, BB 3
Welcome to Follett
Follett equipment enjoys a well-deserved reputation for excellent performance, long-term reliability and outstanding
after-the-sale support. To ensure that this product delivers that same degree of service, we ask that you take a
moment to review this manual before beginning the installation. Should you have any questions or require technical
help at any point, please call our technical service group at [phone] 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 LLC so that we can help in the ling of a claim, if
necessary.
Check your paperwork to determine which conguration you have. Follett conguration numbers are designed to
provide information about the type of refrigerator you are receiving.
Specications
REF20-LB REF25-LB REF20-PH REF25-PH REF20-BB REF25-BB
Capacity 19.7 cu ft (558L) 24.6 cu ft (697L) 19.7 cu ft (558L) 24.6 cu ft (697L) 19.7 cu ft (558L)/
280 bags (450ml)
24.6 cu ft (697L)/
360 bags (450ml)
Storage
system
(4) epoxy-coated
shelves
(4) epoxy-coated
shelves
(6) epoxy-coated
baskets
(6) epoxy-coated
baskets
(6) stainless steel
drawers
(6) stainless steel
drawers
Exterior
width
29.75" (76 cm) 29.75" (76 cm) 29.75" (76 cm) 29.75" (76 cm) 29.75" (76 cm) 29.75" (76 cm)
Exterior
depth
29" (74 cm) 35" (89 cm) 29" (74 cm) 35" (89 cm) 29" (74 cm) 35" (89 cm)
Exterior
depth with
handles
30.5" (78 cm) 36.5" (93 cm) 30.5" (78 cm) 36.5" (93 cm) 30.5" (78 cm) 36.5" (93 cm)
Exterior
height with
casters
79.5" (202 cm) 79.5" (202 cm) 79.5" (202 cm) 79.5" (202 cm) 79.5" (202 cm) 79.5" (202 cm)
Interior
dimensions
(w x d x h)
24" x 22.5" x 56"
(61 cmx 58 cm x 143 cm)
24" x 28.5" x 56"
(61 cmx73 cm x 143 cm)
24" x 22.5" x 56"
(61 cmx 58 cm x 143 cm)
24" x 28.5" x 56"
(61 cmx 73 cm x 143 cm)
24" x 22.5" x 56"
(61 cmx 58 cm x 143 cm)
24" x 28.5" x 56"
(61 cmx 73 cm x 143 cm)
Crated
weight
395 (180 kg) 430 (196 kg) 450 (205 kg) 485 (220 kg) 475 (216 kg) 525 (239 kg)
Max. heat
rejection
950 BTU/hr 1050 BTU/hr 950 BTU/hr 1050 BTU/hr 950 BTU/hr 1050 BTU/hr
Standard features – all models
Door Dual pane, low-E glass, condensation free to 80 F (27 C) air/60% RH
Door handle ADA-compliant, full length handle with integral lock
Interior/exteriormaterial Heavy-duty, corrosion resistant stainless steel
Casters (4) dual-wheel swiveling casters with toe locks
Insulation 2.75" (7 cm) thick, CFC-free foam insulation throughout
Lighting (2) full length side LED lights
Air circulation system Ducted air through 12 back plenum openings with front face return
Temperature probe Stainless steel RTD (resistance temperature detectors) top, bottom probe standard on - BB
models, available as option on -LB, -PH models, immersible with panel quick-disconnect

401134592 – REF20/25 LB, PH, BB
Refrigeration System
The REF20/25 series refrigeration system is designed to give many years of trouble-free service. Except for routine
cleaning of the air-cooled condenser and related parts, the refrigeration system requires no service or maintenance.
The system uses a capillary tube metering device and is critically charged. Access ttings are not provided.
Temporary piercing valves are required to work on the refrigeration system. Follett recommends that if hoses are
ever connected to the refrigeration system for service, the refrigerant should be recovered, permanent access
valves should be installed and the system evacuated, and recharged by weighing in the correct refrigerant charge
(refrigerant R134a, 11.4 oz (322g).
Note: Do not charge the system by pressures.
Ambients
Intended for indoor use where ambient temperature, measured at the condenser inlet, does not exceed 80 F
(27C) and ambient relative humidity does not exceed 60% RH. A heated door is recommended for higher humidity
ambients.
Clearances
The top of the refrigerator must have 10 inches (25.4 cm) of clear space above the refrigerator to ensure proper
ventilation of the refrigeration system.
The back of the refrigerator should have 1 inch (2.5 cm) of clearance to allow for power cord clearance on unit and
an additional 1 inch (2.5 cm) if the unit is to be plugged in directly behind the refrigerator.
Electrical specications
§115 V, 60 Hz, 1 phase
§Running load amps: 8.4A without heated door; max 9.7A with door heater energized 100% (adjustable)
§Full load amps (90% maximum continuous current per UL 471 at 40 C): 10.5A
§Minimum circuit ampacity: 15A dedicated circuit
§Maximum size of branch circuit overcurrent device: 15A dedicated circuit
§Follett recommends circuit be protected by GFCI breaker
Refrigeration specications
§Refrigerant R134a, 11.4 oz (322 g)
§Compressor amperage: RLA - 7.6A, LRA - 44.5A
§Compressor winding resistances: C-S (5.2Ω - 5.9Ω), C-R (1.2Ω - 1.3Ω)
§Evaporator fan motor amperage: FLA - 0.22A
§Condenser fan motor amperage: FLA - 0.46A
§Condenser inlet air temperature: 75 F (23.9 C)
§Discharge pressure (psi): 126
§Suction pressure (psi): 11

01134592 – REF20/25 LB, PH, BB 5
Detail drawing
REF20
30.5" (78cm)
REF25
36.5" (93cm)
76.75"
(195cm)
79.5"
(202cm)
29.75"
(76cm)
10.0"
(25.4cm)
Required Clearances
1.0" (2.5 cm)
for power cord;
2.0" (2.5 cm) if
outlet directly
behind unit

601134592 – REF20/25 LB, PH, BB
Installation
DANGER
• Do not tilt any unit further than 30° off vertical during uncrating or
installation
• Refrigeration module area 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 rst.
Fig. 1
1. Remove key taped to side of refrigerator cabinet and unlock door.
2. Remove casters from box packed inside refrigerator.
Note: California facilities requiring wall and oor anchors – refer to
wall anchor kit instructions (#00938241) packed with seismic kit
before proceeding with caster installation.
3. Unbolt refrigerator from pallet.
4. Rotate refrigerator on pallet to install casters (Fig. 1.1).
5. Install casters by hand one at a time using channel locks to tighten,
until caster meets against the bottom of cabinet (Fig. 1.2).
6. Peel protective lm from exterior walls of stainless cabinet.
Adjust self-closing door
Fig. 2
1. Roll refrigerator to desired location and lock as many casters as
possible (Fig 2.1).
2. If the door appears to be sagging, remove the philips screw
(Fig.2.2) holding the Hold Open Bracket to the Hinge Bracket to
gain access to the Sag Adjustment Screw (Fig. 2.3). Turn the Sag
Adjustment Screw to align the door squarely with the freezer cabinet.
When nished, reinstall the Hold Open Bracket.
3. Check door for closing tension and adjust if necessary. To
check closing tension, open door 1” and turn screw (Fig. 2.4)
counterclockwise until you achieve positive close. (Light will go out)
Then, turn another half turn counterclockwise.
1
2
2
1
3
Hold Open
Bracket
4

01134592 – REF20/25 LB, PH, BB 7
Install shelves (if equipped) and power up
Fig. 3
1. If refrigerator is equipped with shelves, remove bag containing shelf
supports and position them in desired locations on each pilaster
and insert shelves (Fig. 3).
2. Plug refrigerator into a 115 V 60 Hz 15A dedicated outlet.
Fill product bottle
Fig. 4
ATTENTION INSTALLER
§It is imperative that the top/bottom probe bottle be lled with a solution
that your facility uses to ensure proper operation of unit.
§Units are equipped with a third-party monitor installation port.
Customers are required to refer to CDC Vaccine and Handling Toolkit
(cdc.gov) for proper placement of the probe within the cabinet to
ensure proper performance.
1. Remove probe and cap from the top bottle and ll with glycerine
supplied with unit (e.g., 50% glycerine and 50% water) (Fig. 4).
Replace cap and reinsert probe sensor.
2. If equipped with a bottom probe, perform same procedure for
bottom bottle.
3. Adhere supplied probe wire clips (x4, packaged with manual) to
inside wall leading to the probe bottle.
4. Route probe wire into clips and close the clips.
Power the Unit
Fig. 5
1. Press lower left corner of front facade door to access power switch
inside (Fig. 5.1).
Fig. 6
2. Press power switch to turn unit on (Fig. 6.1).
3. Connect wiring harness to back-up battery pack and connect 9 V
chart recorder back-up battery (if equipped).
2
1
3
1
1
2

801134592 – REF20/25 LB, PH, BB
Controller Operation
Use and care of the LCD touchscreen
The LCD touchscreen utilizes capacitive touch technology. This will allow you to engage the functionality by
touching the screen with your ngers, even while you are wearing latex or cotton gloves. Functionality will not
engage by touching with an inanimate object, such as a pen or stylus.
§To preserve optimal touch sensitivity, keep the screen clean by using a clean, dry cotton cloth.
§Do not expose the screen to liquids or excessive dust, heat or humidity.
Control function icons and navigation buttons engage functionality of the user interface. Status indicators alert the
user to a change of status.
Home screen
The Home Screen consists of three primary information areas: the
temperature display, control function display zone and system status display.
System Status
Settings
Alarming
Light
Information log
Help
Compressor is running
Evaporator fan is running
Door is open
Defrost cycle is in process
Control Functions
USB download available
(downloading when blinking)
Refrigeration set points
Sleep functions
Centrigrade to Fahrenheit
Functions and Settings
Probe set points
Alarming functions
Alarm mute
Reset
§Product temperature is displayed in the upper right corner.
§Current selected display probe above temperature readout.
§Primary control function icons are displayed in the lower left corner.
§System status icons will display in lower right corner to indicate a
condition has been activated.
Fig. 7
Fig. 8
High and low temperature display
From the home screen touch the temperature display in the upper right
corner. The high/low temperatures will appear below the temperature
display. To the left of the high/low temperature, a time and date stamp will be
displayed.
View the bottom probe temperature and min/max temperature log
1. Press the Temperature Display in the upper right hand corner of the
display
– Will initially display MIN/MAX temperature of Top probe.
2. Press a second time to prompt a reset Top probe MIN/MAX.
3. Press a third time to display HIGH/LOW alarm settings.
4. Press a fourth time to display current Bottom probe temperature.
5. Press a fth time to display Bottom probe MIN/MAX temperature.
6. Press a sixth time for prompt to reset Bottom probe MIN/MAX
temperature log..
Fig. 9

01134592 – REF20/25 LB, PH, BB 9
Reset the high and low temperatures
Touch the temperature display a second time and the reset function
will appear under the high and low temperature. Touch the reset icon and
a yellow message box will appear. Press to conrm reset or to
cancel.
Alarm set point display
From the home screen touch the temperature display three times. The High
and low alarm set point will appear under the temperature.
Fig. 10
Help
§Help is available at any time by touching the icon at the bottom of
the screen.
§Help is screen-specic; touching the icon will display an explanation
of the functionality and use of the screen you are currently viewing.
§Touch to exit help screen.
Fig. 11
Settings
§Refrigeration Set Point
– Touch the number displayed in the box to the right of the Set point
label and use the keypad or UP and DOWN arrows to select product
temperature. Press to accept or tocancel.
§Sleep Temperature Display
– Toggle ON to hide the temperature reading immediately on the
home screen.
§Set the Sleep Delay
– To automatically hide the temperature after 0-600 seconds of
inactivity, touch the box to the right of the delay (0-600) box. Use
keypad or UP and DOWN arrows to select from 0-600.
§Temperature
F
C
– Toggle between Fand Cto select Fahrenheit or Celsius.
§Brightness
– Touch the number displayed in the box to the right of the Brightness
icon and use the keypad or UP and DOWN arrows to select
from 1-10. Press to accept or to cancel.
Fig. 12
38.4 F40 F
Advanced Settings
FC
F
C
Set point 38.0 F
System Info
Brightness
delay (0 - 300)
ON
3 seconds
OFF
5
Fig. 13
Advanced Settings
delay (0 - 300)
ON
3 seconds
OFF
F C
F
C
Set point 38.0 F
2
5
8
0
1
4
7
3
6
9
#
*
System Information
§Touch the System Info icon to display the model number, unit serial
number and software version. Touch the checkbox icon in the lower
right corner of the box to clear.
Fig. 14

10 01134592 – REF20/25 LB, PH, BB
Alarm or Alert Notications
§If an alarm or event condition is detected and an alarm is engaged,
an alert notication will appear in the left center of the screen with an
explanation of the alert condition and a checkbox at the bottom
right of the alert box.
§No further action can be taken on the User Interface until the alert
condition is acknowledged and cleared by touching the checkbox .
§Mute
– Touch the icon to mute audible alarm for 15 minutes.
Door Switch
§This unit is equipped with a door switch that is located in the façade,
and a magnet located on the top of the door. With the door closed, the
switch reads closed. When the door is opened, the switch contacts open
and turn on the LED lights.
Door Alarm
§This unit is equipped with a door ajar alarm that is factory set for 1
minute. In the event the door switch reads open for longer than 60
seconds (default) an audible and visual alarm will occur. The alarm will
clear when the door is closed. The door alarm activation time can be
changed from 0-600 seconds in the Advanced Settings Menu under
Door Open Alarm Delay.
Power Alarm
§This unit is equipped with a Power Alarm that will sound if the unit loses
power for more than ve minutes. The Power Loss Alarm box will display
every ve minutes, then the screen will sleep. An audible alarm will
sound every 30 seconds during the power failure. An alarm box will be
displayed when power is restored. The event log will record the exact
time and date of the power loss and when the power was restored.
Fig. 15
Start-up alarm delay
This unit has a 120 minute time delay between when the unit is energized to
when the temperature alarms become active. This delay can be changed in
parameters in the controller under Alarm Startup Delay.
Setting Alarms
§Alarming Settings control the conditions and timing of event and alarm
conditions that result in audible and/or visual alerts.
§To change the high alarm set point, touch the number displayed in the
box to the right of the icon and use the keypad or UP and DOWN
arrows to select an alarm value. Press to accept or to cancel.
§To change the low alarm set point, touch the number displayed in the
box to the right of the icon and use the keypad or UP and DOWN
arrows to select alarm value. Press to accept or to cancel.
§Audible Alarm
– Toggle between ON and OFF to engage and disengage the audible
alarm function.
§Mute
– Touch the icon to mute audible alarm for 15 minutes.
Fig. 16
HIGH
LOW
41.5 F
35.1 F
(1 - 10)
ON
3
OFF
Advanced Settings

01134592 – REF20/25 LB, PH, BB 11
Alarming Contacts
This unit is equipped with dry contacts that may be connected to a third
party monitoring system. The contacts are located on the back of the
facade. Touchscreen units utilize Alarm 1. Each set of dry contacts has a
Common, a Normally Open and a Normally Closed connection point. By
default, Alarm Relay 1 is set to activate with any of the following alarms:
Alarm 1 High temp, Alarm 1 Low temp, Door Open Alarm, and Power Loss
Alarm.
Refer to the wiring diagram in this document for more information.
Fig. 17
REAR PANEL CONNECTIONS
Probe calibration
The temperature probes can be offset –9.9 to +9.9 in the Advanced Menu
settings to deliver a more precise temperature reading.
1. Select Settings
2. Select Advanced settings and enter code 1,1,1,1. Conrm with
Check mark
3. Using the DOWN arrow, scroll through Advanced Settings to
Calibrate screen and select Calibrate
4. Place desired probe (P1-control, P2-Defrost, P4-Top probe,
P5-Bottom probe) in an ice bath and allow 3-5 minutes for
temperature stabilization.
5. Press “Offset” and use the UP/DOWN arrows to offset the probe
reading to the proper value.
Note: In the event of a factory reset, the offset value will return to 0.
Screen saver
The screen saver will replace the home screen and display a blank screen,
time and date, or the temperature. When the screen is touched or the unit
has an alarm or event, it will return to the home screen. The screen saver
can be changed in the advanced setting.
Screen saver function: blank, time and date, or temperature.
Screen saver time (sec): 0—600 seconds between the last touch of the
screen to the activation of the screen saver.

12 01134592 – REF20/25 LB, PH, BB
Information Logs
§All available graphs, data logs and event logs are accessed through the
Information Logs function. The home screen in the Information Logs
section displays the product (P4) temperature graph with one week’s
data. Date and time information is displayed on the horizontal axis.
§This unit comes factory set to display only the product temperature (P4)
on the graph. All of the probes can be viewed on the graph if desired.
Probes can be added to the graph through the advanced setting under
DATALOG. P1 and P5( if equipped) can be added by selecting the probe
and changing the parameter from No to Yes. The selected probe will now
display on the graph.
– P1 control, P4 (Top Probe), P5 (Bottom Probe)
§Zoom in (+) or Zoom out (–) on an event/temperature on the home
screen will change the time scale.
§Using the left and right arrows below the graph will scroll the graph. All
the stored temperature data on the graph is viewable.
Fig. 18
38.4 F
HIGH
LOW
P3
P1
41.5 F
35.1 F
(1 - 10)
ON
3
OFF
Advanced Settings
i
i
20130101 20130201
+ Zoom in
- Zoom out
Options
Event log
Temperature log
§Temperature Log – to display a chronological listing of logged
temperatures (latest logged temperature will display rst), touch the
Temperature Log label to the left of the screen. Use the UP and
DOWN arrows to the right of the screen to scroll through the logged
temperatures.
Fig. 19
38.4 F
HIGH
LOW
P3
P1
41.5 F
35.1 F
(1 - 10)
ON
3
OFF
Advanced Settings
i
i
20130101 20130201
+ Zoom in
- Zoom out
Options
Event log
Temperature log
3/1/13 12:30AM 41.1F 41.0F
3/1/13 01:00AM 39.4F 39.8F
Date
3/1/13 12:15AM 42.2F 41.1F
3/1/13 12:45AM 40.3F 39.9F
3/1/13 01:30AM 38.6F 39.7F
3/1/13 01:15AM 38.5F 39.8F
3/1/13 01:45AM 39.7F 39.8F
3/1/13 02:00AM 39.8F 39.9F
3/1/13 02:30AM 40.0F 39.7F
3/1/13 02:15AM 39.9F 39.8F
3/1/13 03:00AM 41.8F 39.5F
3/1/13 02:45AM 41.9F 39.6F
3/1/13 03:15AM 40.7F 39.6F
3/1/13 03:30AM 40.0F 39.7F
3/1/13 04:00AM 41.9F 39.9F
3/1/13 03:45AM 41.7F 39.8F
3/1/13 04:30AM 40.5F 39.7F
3/1/13 04:15AM 40.4F 39.6F
3/1/13 04:45AM 42.0F 39.8F
3/1/13 05:00AM 41.9F 39.9F
3/1/13 05:30AM 41.7F 39.7F
3/1/13 05:15AM 41.8F 39.6F
3/1/13 06:00AM 40.8F 39.9F
3/1/13 03:45AM 40.7F 39.8F
3/1/13 03:15AM 40.9F 39.6F
Time Product RTD 1
+ Zoom in
- Zoom out
Options
Event log
Temperature log
§Event Log – to display a chronological listing of events (including errors,
alarms and alerts), touch the Event Log label to the left of the screen.
Use the UP and DOWN arrows to the right of the screen to scroll
through the logged temperatures.
Fig. 20
38.4 F
HIGH
LOW
P3
P1
41.5 F
35.1 F
(1 - 10)
ON
3
OFF
Advanced Settings
i
i
20130101 20130201
+ Zoom in
- Zoom out
Options
Event log
Temperature log
Verified 2:30PM 20130116
Event Description Time Date
+ Zoom in
- Zoom out
Options
Error Out of temperature 2:28PM 20130116
Back in temperature 2:35PM 20130116
Alert Door open 4:55PM 20130116
Verified 5:05PM 20130116
Door closed 4:56PM 20130116
Power restored 7:10PM 20130116
Verified 7:20PM 20130116
Error Door open alarm 5:00PM 20130116
Verified 2:30PM 20130116
Error Out of temperature 2:28PM 20130116
Back in temperature 2:35PM 20130116
Error Power failure 7:00PM 20130116
Temperature log
Graph
Data logging
§The controller is capable of storing up to 50,000 readings per probe.
The factory setting for the sample rate is every 15 minutes, which will
provide enough storage for 520 days. The sample rate can be change
to provide data logging for a longer or shorter time interval by changing
the Sample Rate (Min) in the advanced settings menu. 0 = off and 360
minutes maximum.

01134592 – REF20/25 LB, PH, BB 13
Data Storage
§Data can be captured different ways. The factory default is for the data
to overwrite itself when the memory is full. This can be changed in the
advanced setting under Data storage overwrite. When this parameter
is set to No, the system will display an alert when the memory is 75%
full. To clear the alert the data must be downloaded.
Data duration alarm
§A reminder can be set to download the data in the Data duration alarm
in the advanced setting. The data duration can be set from 1 to 180
days. If the data duration alarm is used, then the Alarm on data full
parameter in the advanced setting must also be set to Yes.
Downloading data
§The touchscreen has the capability of downloading the temperature
data and event log via a USB port on the left side of the user interface.
The le is a CSV format and is suitable for import directly into Microsoft
Excel.
1. Insert the storage device in the USB slot located to the left of the
Touchscreen.
2. Select the Graph icon along the bottom of the Touchscreen.
3. Select the USB icon in the lower right hand corner.
4. A yellow alert box with downloading data will appear.
5. Press to accept or to cancel.
6. After the unit is done downloading a second yellow alert box will
appear asking if you want to Erase log.
7. Press to accept or to cancel.
Note: If you chose to erase the data, the data duration timer and the data full
alarm will reset. It will also erase the information that is stored on the graph.
One of the two les below will be downloaded depending on
which screen is being viewed:
EL XXXX YY - Event Log
TL XXX YY - Temperature Log
XXXX = last 4 digits of serial number
YY = 0-99 number of downloaded le
Fig. 21
Fig. 22
Data download reminder and data full alarm
§If you plan or are required to download data for a certain time period,
you can set a download data reminder on the Performance Plus unit.
Download data reminder can be found in the advanced setting under
Data duration and can be set from 1 to 180 days.
Follett Keypad Lock – (Optional)
For units equipped with the electronic lock accessory option, a keypad will
be displayed on the left side of the touchscreen. In order to gain access to
the storage area, a user code must be entered.
§User default code is factory set to 1,2,3,4,5,6 and is stored in memory
slot 01.
Fig. 23
38.4 F38.4 F
2
5
8
0
1
4
7
*
3
6
9
#
ENTER
CANCEL

14 01134592 – REF20/25 LB, PH, BB
Changing and Adding the User Codes
1. Touch Settings icon.
1. Touch Advanced Settings, enter your 4-digit user access code
(factory default is 1 1 1 1) in the keypad that appears, and touch
the checkmark icon to access advanced settings screens.
2. Time and date will be displayed. Scroll using the UP and DOWN
arrows until Change Access Code is displayed in the Display
Setup screen.
3. Touch Change Access Code and enter the master code [ENTER].
(By default, the master code is 1 2 3 4 5 6.)
4. Touch the screen to the right of the user code 2 to 40 to overwrite
or add the user code.
5. Enter the new code. Press to accept or to cancel.
6. Enter the new code again. Press to accept or to cancel.
7. Press DONE when nished entering access codes.
Fig. 24
38.4 F
Sleep Function yes
Sleep Timer 0
Screen Saver Function temperature
Screen Saver Timer 0
Change Access Code Change
Display Setup (cont)
Fig. 25
38.4 F
User Access Code 01 123456
User Access Code 02 123456
User Access Code 03 200000
User Access Code 04 Empty
User Access Code 05 Empty
User Access Code 06 Empty
Done
Edit Master Code
User Access Codes
Electronic Lock Override
§Insert key, turn lock.
§Remove panel.
§Depress plunger with screwdriver.
Light
§To turn the interior light on (or off), touch the Light icon or the Light Off
icon.
§Light timer is in advanced settings.
§The light will also come on when the door is open.
Time and Date
§To set time and date, press the Settings icon.
§To display options, touch Advanced Settings, enter your 4-digit user
access code in the keypad that appears, and touch the checkmark icon
to access advanced settings screens (factory default is 1111).
§Time: touch displayed time and use the keypad to enter the time. Press
to accept or to cancel.
§AM/PM: touch displayed value to toggle between AM and PM.
§Month: touch number displayed and use the keypad to enter the month.
Press to accept or to cancel.
§Day: touch number displayed and use the keypad to enter the day. Press
to accept or to cancel.
§Year: touch number displayed and use the keypad to enter the year.
Press to accept or to cancel.
Fig. 26
38.4 F
Set Time and Date
AM/PM AM
Month 1
Time 9:27 AM
Year 2014
Day 16
Advanced Settings
§Touch Advanced Settings, enter your 4-digit user access code in the
keypad that appears, and touch the checkmark icon to access
advanced settings screens (factory default is 1111).

01134592 – REF20/25 LB, PH, BB 15
Chart recorder set up (if so equipped)
The chart recorder is mounted in the front right of the facade behind the door (Fig. 27). A package of 50 charts
that record in C is included with your refrigerator. If you have changed your display to show temperatures in F,
you will need different charts. Please call Follett at [phone] or [phone] to order part number
00967729.
The chart recorder is powered by the controller and has its own battery back up. An LED provides battery status
info: Steady green = battery okay, Flashing green = low battery or no power to the controller.
Chart recorder calibration
If desired, calibration should be done at the same time as probe calibration
by pressing either the left or right arrow keys to correspond with the
calibrated product display temperature.
1. Press Left #1 or Right #2 arrow button for 5 seconds until pen
begins to move.
2. Continue to press #1 or #2 button to move pen to record same
temperature as probe.
Changing the chart paper
1. Press and hold #3 button until pen begins to move off chart.
2. Once the pen moves completely off chart, unscrew knob (counter-
clockwise) at center of chart.
3. Remove old chart and place new chart in position so that correct
time coincides with time line groove on recorder.
4. Reinstall knob.
5. Press and hold #3 button for approximately (1) one second until pen
begins to move back onto chart.
6. Make sure pen is marking paper. If not, carefully adjust arm so that
pen makes contact with paper.
Replacing the pen
1. To replace pen, press and hold the #3 button until pen starts to
move off chart.
2. Once pen has moved completely off chart, carefully lift pen up and
unsnap the “U” clip part to remove pen from metal pen arm.
3. Position new pen on metal pen arm and snap “U” clip underneath
pen around arm to secure.
4. Press and hold #3 button for approximately (1) second until pen
begins to move back onto chart.
5. Make sure pen is marking. If not, carefully adjust arm so that pen
makes contact with paper.
Fig. 27
Removing drawers
Fig. 28
1. Pull drawer forward to stop (Fig. 28.1).
2. Lift drawer front to free front rollers from slides (Fig.28.2).
3. Still lifted, pull drawer forward to free back rollers from slides. 1
2

16 01134592 – REF20/25 LB, PH, BB
Removing slides
1. Push slides all the way back.
2. Swing bottom of slide away from refrigerator wall and lift slide off
rollers.
Network Enabled Device
For assistance with Network Enabled Devices, please refer to literature
included with your unit (P/N 01280296).
Cleaning Fig. 29
Use non chlorine-based cleaners. Cleaners containing chlorine can cause
staining and pitting of the stainless steel.
Disconnect power to unit by turning the power switch off, located on the
upper front facade panel, and removing the power cord from the receptacle.
Interior cleaning
Using a sponge or soft cloth, clean unit with a non-abrasive, non-
chlorinated, all-purpose detergent. Note: The air plenum should be removed
to clean it, as well as behind it (Fig.29, 30). In addition the shelves,
baskets, drawers and slides should be cleaned aswell.
Exterior cleaning
Wipe stainless steel exterior with a soft cloth in the direction of grain as
needed. Stainless steel polish may be used to enhance the nish of the
unit. The glass door and exterior parts may be cleaned with a soft cloth,
window cleaner or other non-abrasive cleaner.
Fig. 30

01134592 – REF20/25 LB, PH, BB 17
Annual cleaning
Fig. 31
Removal of dust and other particulates from air intake areas and the
condenser is important for proper operation. Environments with large
amounts of dust may require more frequent cleaning.
1. Disconnect power to unit by turning power switch off (located on upper
front facade panel) and removing power cord from receptacle.
2. The condenser can be accessed from top for cleaning. The side
panel in front of condenser may be completely removed for easier
cleaning by disconnecting facade and removing upper side panel.
See Face Removal for facade removal instructions.
3. Inspect drain pan for any debris or obstruction in condensate pan
(Fig.31.1).
4. Use a vacuum cleaner with brush attachment to clean condenser,
compressor and related parts.
5. Reinstall upper side panel and facade if removed.
Defrosting
REF20/25 series upright refrigerators do not require manual defrosting. The evaporator defrosts automatically
when the refrigeration unit is in the OFF cycle. The evaporator fan will run continuously.
1

18 01134592 – REF20/25 LB, PH, BB
Service - System Controls
The temperature controller and evaporator probe (P1-control) indicate when the refrigeration system is required to
turn on and off.
The refrigeration system removes heat from the cabinet and rejects it into the surrounding room air.
When the evaporator probe (P1-Control) reaches its predetermined cut-in value (Advanced settings, Viewable), the
probe signals the controller to turn on the refrigeration system. The controller sends a 12VDC signal to the normally
open compressor relay. The relay then closes, energizing the compressor and condenser fan.
When evaporator probe (P1-control) reaches its predetermined cut-out value (Advanced Settings-Viewable), the
controller interrupts the 12 VDC signal to the compressor relay, de-energizing the compressor and condenser fan.
The evaporator fan runs continuously.
Controller Operation
The controller displays product temperature in degrees C (default) or F to 1 decimal point.
The controller is pre-programmed with the following setpoints: 3.3 C (38 F) for -BB models, and 4.4 C (40 F) for
-LB and -PH models. The controller allows for the set point to be adjusted as low as 2 C (36 F) and as high as
10C (50 F) to meet your desired product storage requirements.
All set points operate with a +2.2 C (+4 F) differential offset along with a 10 C (18 F) differential. The differential
offset, in conjunction with the set point and differential, determine the cut-in and cut-out points of the cooling
system. For instance, a unit running with a defaulted set point of 3.3 C (38F) will have the cooling system cut-in
at 5.5 C (42 F) and cut-out at –4.5C (24 F) according to the P1 control probe located within the evaporator coil.
Cut-in and Cut-out parameters are Viewable in via the Advanced Settings Menu.
ATTENTION
Cabinet temperature adjustments can be made by simply modifying the temperature control
setpoint. Modications to the factory default settings for the control differential or evaporator
offset parameters will result in excessive compressor cycles that may lead to premature
compressor/start component failures. Component failures caused by adjusting these critical
control operating parameters may void the equipment warranty.
Sensor Readings/Temperature Display
The Touchscreen is defaulted to display the P4-Top probe which reads the solution temperature of your product
simulation bottle. For ease of troubleshooting, the Touchscreen can be toggled to display the P1-control probe to
view the refrigeration cycle. To toggle the display for your desired probe, Access Advanced Settings>Display Probe
and select the desired probe.
Note: After service is complete it is recommended to restore the display to the P4-Top Probe.
Heated door (option)
Heated doors are factory installed. An unheated door cannot be retrotted to a heated door in the eld. Factory
default for the heated door and fascia heater cycle is set to 10 minutes off and 10 minutes on.
Should the need arise, the door schedule can be changed in Advanced Menu>Door Heater.

01134592 – REF20/25 LB, PH, BB 19
Facade removal Fig. 32
The facade is removed by loosening the top left and right Phillips screws
on the back of the facade to allow the securing clips to rotate away from
the side panels. The facade can simply pull off of the front by pulling it
out of the bayonet mounts that secure it to the upper left and right panels.
If the facade will be completely removed, the electrical plugs should be
disconnected. The ground wire should be removed from the top right
grounding screw on the cabinet box, not from the facade (Fig.32.1).
Note: Be sure to reinstall the ground wire.
1
Controller replacement
CAUTION
• Controller board is susceptible to electrostatic discharge. Extreme
care should be exercised by using a grounding strap when handling
and installing control board.
Fig. 33
1. Turn off power to unit and unplug.
2. Disconnect electrical plugs and remove facade.
3. Remove screw securing ground screw to refrigerator cabinet
(Fig.33.1). Do not remove ground wire from facade.
4. Place facade face down on at clean surface with bottom of facade
facing you, and remove four screws attaching back panel to facade.
5. Lift and rotate back panel toward you.
6. Take precautions for proper grounding to reduce risk of electrostatic
discharge (ESD) to the controller board.
7. Locate the control board standoffs (Fig.33.2).
8. Using Needle nose pliers, pinch the stand-off tabs and gently pull
up on the control board to release.
Note: All wiring should remain connected to the original control board at this
time.
9. Install replacement control board on existing stand-offs.
Note: Use supplied stand-offs to replace any that may have been damaged
during control board removal.
1

20 01134592 – REF20/25 LB, PH, BB
10. Removing one at a time, transfer wiring from the original control
board to the replacement control board, ensuring each wire is
secured at the same location it was removed from.
11. Flip façade cover back into position on façade and reinstall 4
screws.
12. Remount façade to bayonet mounts.
13. Reconnect ground wire to grounding location on cabinet.
14. Reconnect all electrical and probe connections.
15. Plug in unit and power on, ensuring proper operation.
Reversing the door swing (requires a new door)
REF20/25 units ship standard with a non heated right hinged door. To
change to a left hinged conguration requires a new door. For heated door
options other parts may be required. If the unit has a heated door option
consult technical service by calling [phone] or [phone].
Door gasket replacement Fig. 34
1. Remove existing gasket from mounting track (Fig. 34).
2. Verify mounting track is free of any remaining gasket material.
3. Align new gasket with mounting track and press rmly in place.
4. Open and close door, checking for proper gasket seal without
pinching against refrigerator.
Slide-out unit cooler Fig. 35
Follett’s slide-out refrigeration system allows technicians to remove the
entire unit from the refrigerator top.
1. If necessary remove facade and upper side panels.
2. Remove four bolts securing unit cooler to refrigerator top (Fig.35).
3. Gently lift off cooler.