Follett REF12i-4S User manual

REF12i – 4S
REF12i – 5B
REF12i – 5D
Order parts online:
www.follettice.com
01542992R00
801 Church Lane • Easton, PA 18040, USA
Toll free [phone] • [phone]
www.folletthealthcare.com
Installation Guide
Please visit https://www.follettice.com/technicaldocuments
for the Operation and Service manual for your unit
Welcome to Follett Products, LLC
Follett equipment enjoys a well-deserved reputation for excellent performance, long-term reliability and outstanding
after-the-sale support. To ensure that this equipment delivers that same degree of service, review this guide
carefully before you begin your installation.
Should you need technical help, please call our Technical Service group at [phone] or [phone].
Please have your model number, serial number and complete and detailed explanation of the problem when
contacting Technical Service.
Getting Started
After uncrating and removing all packing material, inspect the equipment for concealed shipping damage. All freight
is to be inspected upon delivery. If visible signs of damage exist, please refuse delivery or sign your delivery receipt
“damaged.” Follett Customer Service must be notied within 48 hours. Wherever possible, please include detailed
photos of the damage with the original packaging so that we may start the freight claim process.

2REF12i 4S, 5B, 5D
Preliminary Information
Caution Symbols
Warning: Flammable Refrigerant.
Caution: Risk of danger to operator or harm to equipment. Refer to manual.
Warning: TIP OVER HAZARD. This unit is top heavy and tips easily when not completely installed.
To avoid a hazard due to instability of the unit, it must be installed using the anti-tip brackets according to
the instructions.
DANGER
§Risk of re or explosion. Flammable refrigerant used.
Before attempting to install or service this product, all safety precautions must be followed.
CAUTION! – Risk of re or explosion. Dispose of properly in accordance with federal or local regulations.
Flammable refrigerant used.
CAUTION!– Risk of re or explosion due to puncture of refrigerant tubing; follow handling instructions carefully.
Flammable refrigerant used.
CAUTION! – Handling, moving, and operating the refrigerator to avoid either damaging the refrigerant tubing or
increasing the risk of a leak.
CAUTION!
§If the equipment is not transported vertically, a period of at least 24 hours must be allowed before starting.
The equipment must be transported and handled exclusively in upright position. This is required to avoid
contamination of the refrigerant with compressor oil. Contamination could result in valve and heat exchanger coil
failure, problems starting the electric motor, or the risk of gas leak. The manufacturer is not responsible for any
problems due to transport executed in conditions other than those specied.
The equipment must be handled using a forklift truck or a pallet truck with suitable forks (fork length at least equal
to 2/3 length of unit).

REF12i 4S, 5B, 5D 3
WARNING!
§Read this manual thoroughly before operating, installing or performing maintenance on the equipment. Failure to
follow instructions in this manual can cause property damage, injury or death.
§The machine contains R600a refrigerant. R600a (isobutane) is ammable.
§When servicing the equipment, be sure to lock the circuit breaker, and display an in-service notice.
§This equipment contains high-voltage electricity and refrigerant charge. Installation and repairs are to be
performed by properly trained technicians aware of the dangers of dealing with high voltage electricity and
refrigerant under pressure. The technician must also be certied in proper refrigerant handling and servicing
procedures. All lockout and tag out procedures must be followed when working on this equipment.
§Repair on R600a systems must always be done in a well-ventilated area.
§Because R600a is highly ammable, a combustible gas leak detector is required when servicing R600a systems.
§Keep ventilation openings, in the appliance enclosure or in the built-in structure, clear of obstruction.
§Do not use mechanical devices or other means to accelerate the defrosting process, other than those
recommended by the manufacturer.
§Do not damage the refrigerant circuit.
§Do not store explosive substances such as aerosol cans with a ammable propellant in this appliance.
§Do not use electrical appliances inside the food storage compartments of the appliance, unless they are of the
type recommended by the manufacturer.
§Only use parts recommended or provided by the manufacturer.
§Do not tilt unit further than 30° off vertical during uncrating or installation.
§If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly qualied
persons in order to avoid a hazard.
§This appliance is designed for commercial use.
§To reduce risk of shock, disconnect power before servicing.

4REF12i 4S, 5B, 5D
General Information
§To avoid a rise in temperature in the cabinet and/or contents, only open the door for brief periods of time.
§In the refrigerator compartment, put stored items on the shelves and do not let them contact the wall.
§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
REF12i-4S REF12i-5B REF12i-5D
Capacity 12 ft3(339.8L) 12 ft3(339.8L) 12 ft3(339.8L)
Usable space 7.2 ft3 (0.20 m3)7.6 ft3 (0.22 m3)7.5 ft3(0.21 m3)
Storage system (4) epoxy-coated shelves (5) epoxy-coated baskets (5) stainless drawers
Exterior width 23.75" (60.3 cm) 23.75" (60.3 cm) 23.75" (60.3 cm)
Exterior depth 25" (63.5 cm) 25" (63.5 cm) 25" (63.5 cm)
Exterior depth with handles 26.58" (67.5 cm) 26.58" (67.5 cm) 26.58" (67.5 cm)
Exterior height with casters 72" (182.9 cm) 72" (182.9 cm) 72" (182.9 cm)
Interior dimensions
(w x d x h)
19.8" x 20" x 52"
(50 cm x 51cm x 132 cm)
19.8" x 20" x 52"
(50 cm x 51 cm x 132 cm)
19.8" x 20" x 52"
(50 cm x 51 cm x 132 cm)
Approx. ship weight 420 lb (191 kg) 420 lb (191 kg) 420 lb (191 kg)
Net weight 287 lb (130 kg) 322 lb (146 kg) 317 lb (144 kg)
BTU/hr normal heat
rejection (75 F ambient)
600 BTU/hr (176 Watts) 600 BTU/hr (176 Watts) 600 BTU/hr (176 Watts)
BTU/hr maximum (total)
heat rejection, at maximum
compressor speed
(75 F ambient)
1350 BTU/hr (396 Watts) 1350 BTU/hr (396 Watts) 1350 BTU/hr (396 Watts)
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 CFC-free foam insulation throughout (thickness: 2.75” at rear, 2” at sides)
Lighting (1) full length side LED lights
Air circulation system Ducted air through back plenum openings with front face return
Temperature probe Stainless steel RTD (resistance temperature detectors) top, immersible with panel quick-
disconnect

REF12i 4S, 5B, 5D 5
Refrigeration System
The REF12i 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 R600a, 2.3 oz (65 g)).
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)
§Ambient relative humidity does not exceed 60% RH
§Altitude is below 2000 m
§Environment is classied as Pollution Degree 2
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 3 inches (7.5 cm) of clearance to allow for power cord clearance on
unit to ensure proper ventilation of the refrigeration system.
§Ensure placement of refrigerator does not prevent access to main power cord plug for disconnection.
Electrical specications
§115 V ±10%, 60 Hz, 1 phase
§Running load amps: 0.61A
§Full load amps (90% maximum continuous current per UL/CSA/IEC 61010-1 at 40 C): 2.5A
§Minimum circuit ampacity: 15A dedicated circuit
§Maximum size of branch circuit overcurrent device: 15A dedicated circuit
§Follett recommends circuit be protected by GFCI breaker
§Product main power cord must be plugged into an outlet that is properly connected to protective earth ground
§Overvoltage Category II
Refrigeration specications
§Refrigerant R600a, 2.3 oz (65 g)
§Compressor amperage: RLA - 2.10 A, LRA - 2.10 A
§Compressor winding resistances: C-S (16.07 Ω +/- 8%), C-R (16.07 Ω +/- 8%)
§Evaporator fan motor amperage: FLA - 0.2 A
§Condenser fan motor amperage: FLA - 0.4 A
§Condenser inlet air temperature: 75 F (23.9 C)
§Discharge pressure (psi): 88
§Suction pressure (psi): 39

6REF12i 4S, 5B, 5D
Detail drawing
10.0"
(25.4 cm)
Required Clearances
72"
(182.9 cm)
69.3"
(176 cm)
23.75"
(60.3 cm)
26.58"
(67.5 cm)
3.0" (7.5 cm)
for power cord
and proper
ventilation
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 (P/N 01543883) instructions (P/N 01543891) 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. 1
2

REF12i 4S, 5B, 5D 7
WARNING
TIP OVER HAZARD.This unit is top heavy and tips easily when not completely installed.
To avoid a hazard due to instability of the unit, it must be installed using the anti-tip
brackets according to the instructions.
Wall Anchorage Installation
Fig. 2
To avoid tip over, the unit must be attached to the wall using the included
hardware.
Note: If anchoring for seismic purposes, please refer to Follett Seismic
Anchor Kit #01543883.
Note: If oor anchoring is desired, please refer to Follett Floor Anchor
kit #01552553.
1. Using the top set of anchor mounts, install the (2) wall anchor
brackets using (4) 1/4-20 screws and washers.
2. Using the hex head bolt, washer and acorn nut, attach the other (2)
brackets to the brackets just installed.
3. Roll the refrigerator into desired position to mark mounting locations,
being sure to capture a wall stud with the mounting hardware (not
included).
Adjust self-closing door
Fig. 3
1. Roll refrigerator to desired location and lock as many casters as
possible (Fig 3.1).
2. If the door appears to be sagging, remove the Phillips screw
(Fig.3.2) holding the Hold Open Bracket to the Hinge Bracket to
gain access to the Sag Adjustment Screw (Fig. 3.3). 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. 3.4)
counterclockwise until you achieve positive close (light will go out).
Then, turn another half turn counterclockwise.
2
1
3
Hold Open
Bracket
4

8REF12i 4S, 5B, 5D
Install shelves (if equipped) and power up
Fig. 4
1. If refrigerator is equipped with shelves, insert shelves by hanging
them on the back pilasters as shown (Fig. 4).
2. Plug refrigerator into a 115 V 60 Hz 15A dedicated outlet.
Attention Installer: In order to maintain compliance to ANSI/NSF 456,
do not store product on the bottom oor or against the back or side
walls. Product must be stored on a factory supplied shelf, basket or
drawer.
Fill product simulation bottle
Fig. 5
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.
§NSF 456 requires the temperature display probe (P4-RTD1 in
REF12i models) to be replaced or recalibrated. Follett recommends
replacement/recalibration 12 months from the original date of
calibration on the Certicate of Traceability supplied with your
equipment at the time of purchase. Recalibration or purchasing a new
calibrated probe is not covered by the original equipment warranty. To
purchase a new Probe with Certicate of Traceability, please contact
our Parts Department @ 1-877-612-5086 or [e-mail].
1. Remove probe and cap from the top bottle and ll with glycerine
supplied with unit (e.g., 50% glycerine and 50% water) (Fig. 5).
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.

REF12i 4S, 5B, 5D 9
Power the Unit
Fig. 6
1. Press power switch, located on the right side of the façade, to turn
unit on (Fig. 6).
2. REF12i units are equipped with rechargeable batteries.

10 REF12i 4S, 5B, 5D
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

REF12i 4S, 5B, 5D 11
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

12 REF12i 4S, 5B, 5D
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

REF12i 4S, 5B, 5D 13
Alarm Test Function
The Alarm Test Function is designed to drive the P4 reading above and below the programmed Alarm Set Points
and validate the controller will signal an alarm. To perform the Alarm Test Function, follow the steps below:
1. Press the Gear Icon
2. Locate Advanced Settings
3. Enter Code 1,1,1,1
4. Scroll to General Alarm Setup Page
5. Select Test Hi/Low Alarms- Press Test
§Controller will slowly elevate the Alarm probe temperature above the High Alarm Value until High Alarm
appears on the screen along with an audible tone.
§Controller will slowly lower the Alarm probe temperature until it falls below the Low Alarm Value until Low
Alarm appears on the screen along with an audible tone.
6. Once the Test has been completed a record of the Hi/Low Alarm test will be viewable in the Event Log
with a Time/Date stamp.
Probe calibration
§NSF/ANSI 456 requires the temperature display probe (P4) to be replaced or recalibrated. Follett recommends
replacement/recalibration 12 months from the original date of calibration on the Certicate of Traceability
supplied with your equipment at the time of purchase. Recalibration or purchasing a new calibrated probe is
not covered by the original equipment warranty. To purchase a new Probe with Certicate of Traceability, please
contact our Parts Department at 1-877-612-5086 or [e-mail].
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
screensaver.
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)
Fig. 17
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

14 REF12i 4S, 5B, 5D
§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. 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.
§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.
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.
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. 18
Fig. 19

REF12i 4S, 5B, 5D 15
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.
Light
§To turn the interior light on or off, touch the Light 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. 20
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).
Removing drawers
Fig. 21
1. Pull drawer forward to stop (Fig. 21.1).
2. Lift drawer front to free front rollers from slides (Fig.21.2).
3. Still lifted, pull drawer forward to free back rollers from slides.
Removing slides
1. Push slides all the way back.
2. Swing bottom of slide away from refrigerator wall and lift slide off rollers.
1
2

16 REF12i 4S, 5B, 5D
Network Enabled Device
For assistance with Network Enabled Devices, please scan the QR code. This code can also be found on the
inside cabinet wall of the REF12i.
Rechargeable Battery
Your refrigerator is equipped with a rechargeable SLA AGM 12 V 1.2Ah battery. The unit also includes a charger
which maintains battery charge in readiness of a potential power failure event.
CAUTION
§Risk of hazard if non-rechargeable or otherwise improper battery is installed
in the system.
§If battery maintenance is required, use only appropriate Follett-authorized
service part or compatible SLA AGM 12 V 1.2Ah battery.
Cleaning Fig. 22
Use non chlorine-based cleaners. Cleaners containing chlorine can cause
staining and pitting of the stainless steel.
Disconnect power to unit by turning off the power switch, located on
the upper front façade 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.22). 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.
Loosen screws
and lift up air
plenum

REF12i 4S, 5B, 5D 17
Annual cleaning
Fig. 23
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 façade 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 façade and removing upper side panel.
See Façade Removal for façade removal instructions.
3. Inspect drain pan for any debris or obstruction in condensate pan
(Fig.23.1).
4. Use a vacuum cleaner with brush attachment to clean condenser,
compressor and related parts.
5. Reinstall upper side panel and façade if removed.
Defrosting
REF12i model refrigerators incorporate an auto defrost cycle. The refrigerator enters a defrost every 8 hours.
The defrost cycle will terminate when the evaporator coil probe (P2-Evaporator) reaches 5.5 C (42 F) or when
30minutes has elapsed, whichever comes rst.
Antifreeze Function
The Antifreeze Function is designed to keep the stored vaccines from falling below 2 C (36 F). The function is
driven by the P4-RTD 1 bottle probe. In the event that the P4 probe reading reaches 2 C (36 F), the cooling
system will cycle OFF. Once the P4-RTD1 probe reading rises back to the programmed controller Set Point, the
cooling system will cycle back on and assume normal operation.
1

18 REF12i 4S, 5B, 5D
Follett’s Patented P.I.D. Controller
Follett’s patented P.I.D. controller allows the control system to modulate the RPMs of the compressor and
condenser fan according to cabinet requirements. The evaporator fan runs at a consistent RPM value during
cooling system operation.
Proportional Control Operation - Primary
As the return air (P1 probe) reading rises above the set point value, the compressor and condenser fan RPMs
increase to provide additional cooling capacity.
As the return air (P1 probe) value approaches set point, the compressor and condenser fan RPMs reduce.
As the return air (P1 probe) reading falls below the set point, the compressor and condenser fan RPMs will
operate at minimum levels to sustain product and cabinet temperature.
The compressor and condenser fan RPMs will continue to increase and decrease to sustain desired set point.
Integral Control Operation - Secondary
As a secondary to the Proportional Control, the Integral Control Operation also analyzes the amount of time that
the return air (P1-Control) has been above or below set point value. In tandem with the Proportional Control, it
adjusts compressor and condenser RPMs to sustain cabinet temperature.
Derivative Control Operation - Tertiary
As a tertiary control function, the Derivative Control Operation monitors return air (P1-Control) specically
identifying sudden increases and decreases in return air temperature and, when identied, will adjust RPMs
accordingly.
ATTENTION
Cabinet temperature adjustments can be made by simply modifying the temperature control
setpoint. Modications to the factory default settings wlll result in excessive compressor
cycles and may lead to premature failures. Component failures caused by adjusting critical
control 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.

REF12i 4S, 5B, 5D 19
Façade removal
CAUTION
§The following terminals are hazardous live:
–PWR IN
–Inverter/Comp
Fig. 24
1. Locate the ON/OFF switch, on the right side of the façade, and
turn to OFF position.
2. Remove top ventilation cover.
3. Disconnect all wiring harnesses attached to the rear of the façade.
4. Open refrigerator door and locate the two screws on the
underside of the façade. Remove and retain screws.
5. Gently pull the plastic façade cover forward approximately 1.5"
(3.8 cm), separating the bayonet mounts from the sides of the
side support panels (Fig. 24).
6. Lift and pivot the bottom of the façade upwards to just above
horizontal, and allow it to track on the façade hinge (Fig. 25).Fig. 25

20 REF12i 4S, 5B, 5D
7. Slide facade back and up (Fig. 26). Rest tab on top of control box.
8. Continue sliding front façade towards back of cabinet, until it rests
entirely on top of unit.
Fig. 26
9. Remove two screws on both the left and right side that secure the
electrical control box to the side support panels (Fig. 27).
10. Carefully grab the plastic front façade and bring it down to meet
the rear of the façade.
11. While holding the front of the façade, grip the rear façade left/right
tabs and entirely remove from cabinet.
12. Carefully close façade.
13. Reinstall vertical screws through façade cover.
14. Pull façade assembly away from cabinet.
Fig. 27