Follett REF2, REF1 Installation, Operation And Service Manual

REF1/REF2

High-Performance Compact Refrigerators

Installation, Operation and Service Manual

REF1 REF2

Following installation, please forward this manual

801 Church Lane • Easton, PA 18040, USA
Toll free [phone] • [phone]
www.follettice.com

totheappropriate operations person.

Order parts online:
www.follettice.com

00940593R06

Contents

Welcome to Follett......................................................................................................................................................3

Before you Begin ................................................................................................................................................... 3

Specications .............................................................................................................................................................3

Dimensions ............................................................................................................................................................3

Electrical Specications ......................................................................................................................................... 3

Refrigeration Specications ...................................................................................................................................3

Heat Rejection .......................................................................................................................................................3

Ambient Information ..............................................................................................................................................3

Installation ..................................................................................................................................................................4

Locating the Refrigerator .......................................................................................................................................4

Installing Foot Pads - Required .............................................................................................................................5

Installing Shelves ...................................................................................................................................................5

Installing Glycerine Solution in Product Simulation Bottle .....................................................................................5

Battery Backup (KP models only) .......................................................................................................................... 6

Reversing the Door Swing – Optional ...................................................................................................................6

Adjusting Hinge Closure Force .............................................................................................................................. 9

Installing Third-party Temperature Probe ........................................................................................................... 10

Cleaning ....................................................................................................................................................................12

Annual Cleaning ..................................................................................................................................................12

Operation ..................................................................................................................................................................12

Temperature Control ............................................................................................................................................13

Automatic Defrost ................................................................................................................................................ 13

Controller Operation ................................................................................................................................................13

Controller Display................................................................................................................................................. 13

Controller Security ............................................................................................................................................... 14

Changing Temperature Display from C to F ........................................................................................................ 14

Changing Temperature Display from Decimal to Integer ..................................................................................... 14

Sleep Function .....................................................................................................................................................14

Minimum and Maximum Temperature Function ..................................................................................................14

Alarming Functions ..............................................................................................................................................14

Follett Keypad Lock .............................................................................................................................................17

Service .......................................................................................................................................................................18

Door Gasket Replacement .................................................................................................................................18

Access Compressor Compartment .................................................................................................................... 18

Changing the Back-up Batteries .......................................................................................................................... 18

Controller Replacement ......................................................................................................................................19

Wiring Diagram ....................................................................................................................................................20

Checking Refrigeration System Pressures ..........................................................................................................21

Compressor Information ......................................................................................................................................21

Refrigerator Troubleshooting ..................................................................................................................................22

Accessories ..............................................................................................................................................................23

Temperature Surveillance Module Accessory (P/N 00168674) ........................................................................... 23

Temperature Alarm Accessory (P/N 00112185) ................................................................................................... 23

Digital Data Logger (P/N 01057561) ....................................................................................................................23

Glycerine - 16 oz. bottle (P/N 00959296) ............................................................................................................23

Wall-mount Kit (P/N 00969949) ...........................................................................................................................23

Remote Alarm Contact Accessory (P/N 01092022) ............................................................................................23

Replacement Parts ...................................................................................................................................................24

Hardware .............................................................................................................................................................25

Evaporator ...........................................................................................................................................................26

Compressor Components ....................................................................................................................................27

Control Board .......................................................................................................................................................28

2 REF1/REF2 Compact Refrigerators

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 Corporation so that we can help in the ling of
a claim, if necessary.

Check your paperwork to determine which item number you have. Follett item numbers are designed to provide
information about the type of refrigerator you are receiving.

Specications

Dimensions

REF1 REF2

Dimensions (external)

Dimensions (internal)

Shelf Size

Capacity 1 cu ft (28 L) 1.8 cu ft (51 L)

Weight (uncrated)* 73 lbs (33 kg) 87 lbs (39 kg)

* Add 22 lbs/10 kg for packaging.

18.6" W x 24" D x 17.75" H
(47 cm x 61 cm x 45 cm)

14.6" W x 11.6" D x 5.72" H
(37 cm x 29 cm x 14.6 cm)

13.75 W x 9 D
(35 cm x 23 cm)

18.6" W x 24" D x 27.75" H
(47 cm x 61 cm x 70 cm)

14.6" W x 11.6" D x 15.72" H
(37 cm x 29 cm x 40 cm)

13.75 W x 9 D
(35 cm x 23 cm)

Electrical Specications

§ 115 V, 60 Hz, 1 phase

§ Full load: 1.8A

§ Minimum circuit ampacity: 15A

§ Maximum size of branch circuit overcurrent device: 15A

§ Follett recommends circuit be protected by GFCI.

Refrigeration Specications

Maximum Design Pressures (psi)

Refrigerant Charge Size (oz)

R134A 3.4 240 88

High Side Low Side

Heat Rejection

§ 190 BTU/hr (56 W) maximum

Ambient Information

CAUTION!

The REF1 and REF2 are for indoor use only.

Optimum Maximum

Air Temperature ≤80 F (28 C) 100 F (38 C)

Relative Humidity 60% max

REF1/REF2 Compact Refrigerators 3

Installation

Locating the Refrigerator

Performance of REF1 and REF2 is affected by ambient temperature and location. To ensure proper
performance, please refer to the following drawings and conrm that the clearance requirements are met. There
is no clearance requirement for the back of the refrigerator so it can be placed against the wall.

80 F (27 C) and 60% RH – located under overhanging cabinet or shelf with zero top clearance

Requires 6" (15.3 cm) clearance on either right or left side

SHELF

SHELF

6" (15.3 cm) minimum air

6" (15.3 cm) minimum air
clearance required right
or left side

80 F (27 C) and 60% RH – unrestricted topclearance location

Requires 2" (5.1 cm) clearance on both sides and unrestricted top clearance (12" (30.5 cm) min above unit)

clearance required right
or left side

UNRESTRICTED TOP
CLEARANCE

UNRESTRICTED TOP
CLEARANCE

2" (5.1 cm) minimum air

2" (5.1 cm) minimum air
clearance required on
both sides

clearance required on
both sides

100 F (38 C) – maximum temperature location with zero top clearance

Requires 6" (15.3 cm) clearance on both sides

SHELF

SHELF

6" (15.3 cm) minimum air
clearance required on
both sides

6" (15.3 cm) minimum air
clearance required on
both sides

4 REF1/REF2 Compact Refrigerators

Installing Foot Pads - Required

CAUTION!

Use caution when tipping the refrigerator during foot pad installation. DO NOT EXCEED 30° angle.
Tipping more than 30° can result in compressor malfunction.

1. Remove the foot pads (4) from the plastic bag packed inside
the refrigerator.

2. Carefully tip the refrigerator back, ensuring that it cannot fall, to
expose the four foot pad holes (Fig. 1).

3. Position the foot pad over the foot pad hole and press the
center of the foot pad until it is fully seated. The foot pads
extend 1/8" (3.2 mm) below the base of the refrigerator (Fig. 1).

Installing Shelves

1. Remove shelves and shelf brackets packed inside refrigerator.

(If ordered, nd additional shelf accessory in separate box.)

2. Install shelf brackets in pilasters (insert top tab, squeeze and
push in lower tab) (Fig. 2).

Fig. 1

Fig. 2

Installing Glycerine Solution in Product Simulation Bottle

(glycerine not included - P/N00959296)

1. Remove the bottle from the bracket located in the upper left side
of the refrigerator (Fig. 3).

2. Remove the top and ll the bottle with a 50/50 solution of glycerine
and water.

3. Replace the top (and probe).

4. Reinsert bottle into the bracket.

Note: If you are using this in a food service application, and installing in

accordance with NSF, you must remove the probe from the bottle.
NSF requires that air temperature be displayed.

REF1/REF2 Compact Refrigerators 5

Fig. 3

5. Plug in the refrigerator and return the power switch to ON
(Fig.4).

Fig. 4

Battery Backup (KP models only)

1. Provide power to the unit and turn the power switch to the ON

position.

2. Open the door using the keypad lock and prop the door open so
it doesn’t close during the battery installation.

3. Turn power switch to the OFF position or unplug the unit from
the power supply.

4. Remove the two screws (Fig. 5.1) on the front panel at the
bottom of the unit.

5. Remove the front panel.

Note: Take care when removing, some wires are connected to the

front panel (Fig. 5.2).

6. Find the battery pack on the right-hand side of the front panel.

7. Pull the battery pack and the battery connector away from the
hook and loop patch on the front panel (Fig. 5.3).

8. Connect the battery connector with the black and red wires to

the top of the battery pack.

9. Place the battery pack back in place rmly on the hook and loop
patch.

10. Re-install the front panel.

11. Close the door.

12. Test operation of the keypad lock while the power to the unit is
OFF to conrm back-up battery connection.

13. Turn the power switch ON or plug the unit back into the power

su pply.

Fig. 5

3

2

1

Reversing the Door Swing – Optional

1. Use at screwdriver to carefully remove hinge covers (Fig. 6).

6 REF1/REF2 Compact Refrigerators

Fig. 6

2. Using a small Phillips screwdriver, allen key or drift pin, rotate

top of spring assembly (counter-clockwise for right-hand hinged
doors) (Fig.7.1) to remove the pin (Fig.7.2).

3. Relieve torque on the spring.

Fig. 7

2

1

4. With a at-head screwdriver, simultaneously push down and pry
the top of the spring from out of the top of the hinge (Fig.8).

5. Support door and remove screws attaching hinge to refrigerator
cabinet and remove the door (Fig. 9).

6. Cover hinge screw holes with screws removed from opposite
side of door and door frame.

Fig. 8

Fig. 9

REF1/REF2 Compact Refrigerators 7

7. Remove screws holding lock strike-bracket at "bottom" inside of
door (Fig. 10.1).

8. Remove screws from inside of door "top" and install bracket.

9. Plug "bottom" holes with retained screws and install lock strike-
bracket to "top" inside of door (Fig. 10.2).

10. Reverse door 180° so that lock strike-bracket is on the bottom
inside of door (Fig. 10.3).

Fig. 10

2

3

1

11. Reinstall the door on the opposite side of the doorframe. Adjust

Fig . 11

if needed.

12. Reinstall screws (torqued to 25 in-lbs) (Fig. 11).

13. Insert bottom of spring kit onto bottom hinge pin (Fig.12). Fig. 12

8 REF1/REF2 Compact Refrigerators

14. Insert tool as shown and press down on both sides of tool
(Fig.13.1) to compress spring kit, then insert top of spring kit
onto top hinge pin (Fig. 13.2).

Fig. 13

Adjusting Hinge Closure Force

1. Remove the tool and insert it (Phillips screwdriver, Allen key,
drift pin) into hole nearest the hinge bracket (Fig.14).

Fig. 14

1

2

1

2. Rotate top of spring counter-clockwise to increase the spring
torque (Fig.15).

Fig. 15

REF1/REF2 Compact Refrigerators 9

3. Insert pin into an open hole nearest the hinge bracket
(Fig.16.1), and remove the tool used to torque the spring
(Fig.16.2).

4. Repeat Steps 2 and 3 until desired closure force is achieved.

CAUTION!

Do not overtorque the spring unnecessarily. Minimum closure
force should close door when door is opened 1" (2.5 cm).

5. Reinstall hinge cover (Fig. 17). Fig. 17

Fig. 16

1

2

Installing Third-party Temperature Probe

Facilities using a third-party alarming and/or temperature monitoring
system need to install the third-party probe in the refrigerator. Follett
recommends removing any stored product before performing this
procedure.

1. Move the power switch on lower rear panel to OFF and unplug
the refrigerator.

2. Remove the rear panel of the refrigerator (Fig. 18).

3. Open front door of refrigerator and remove shelf/shelves, if

installed, for better access.

10 REF1/REF2 Compact Refrigerators

Fig. 18

4. From inside the refrigerator, push and fold the perforated cut
out located on the inside, upper-right hand corner (Fig.19).

5. Use a long screwdriver or drill to create a hole (up to 1"
(25.4mm) diameter) through the exposed foam insulation.

6. From inside the refrigerator, feed non-probe end of wire through
opening (Fig. 20).

7. Secure probe to interior cabinet wall to avoid product
interference.

8. Gently pull on non-probe end of wire to remove slack from
inside of refrigerator.

9. Use Permagum* or equivalent sealant to replace foam
insulation (removed in Step 5) to ensure proper performance of
refrigerator.

10. Remove any debris that may have fallen into the drain pan or
condensor area.

11. Route non-probe end of wire through appropriate ventilation
hole in refrigerator rear panel.

12. Reinstall the rear panel.

13. Connect non-probe end of wiring to monitoring device.

14. Plug in the refrigerator and return the power switch to ON.

* Permagum is a registered trademark of the Presstite Engineering Company.

Fig. 19

Fig. 20

REF1/REF2 Compact Refrigerators 11

Cleaning

CAUTION!

Use only non-chlorine-based cleaners. Use of cleaners containing chlorine can cause staining and
pitting of the stainless steel

Interior

Using a sponge or soft cloth, clean unit with a non-abrasive, non-chlorinated, all-purpose detergent.

Exterior

Wipe 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.

Annual Cleaning

Removal of dust and other particulates from air intake areas and the condenser is important for proper operation.
Under certain conditions, some environments with large amounts of dust may require more frequent cleaning.

1. Move the power switch on lower rear panel to OFF and unplug
the refrigerator.

2. Remove rear panel (Fig. 21.1).

3. Clean drain pan (Fig. 21.2) with a non-abrasive, non-

chlorinated all-purpose detergent.

4. Use a vacuum cleaner with brush attachment to clean
condenser, compressor motor, and related parts.

5. Reinstall rear panel.

Fig. 21

2

1

Operation

The temperature control board and probe indicate when the refrigeration system is required to turn on and off.

The refrigeration system removes heat from the cabinet interior and rejects it to the surrounding room air.
When the cabinet interior temperature rises above the controller cut-in temperature, the controller turns the
refrigeration system on. The controller energizes the evaporator fan and solid-state control relay which energizes
the condensing unit. The compressor uses a current-style starting relay and a starting capacitor to start the
compressor motor.

When the cabinet interior temperature falls below the controller cut-out temperature, the controller turns the
refrigeration system off. The controller contacts reopen, which de-energizes the evaporator fan motor and solid­state control relay which de-energizes the condensing unit (compressor and condenser fan motor).

Any accumulated frost on the evaporator coils melts during the off cycle. The condensate drains out of the unit
to the condensate tray to the left of the condensing unit. The heat from the condensing unit evaporates any
condensate in the drain pan.

12 REF1/REF2 Compact Refrigerators

Temperature Control

The temperature control system is preset by the factory to maintain a cabinet temperature of 3.3–5.5C
(38–42F). If desired, the set-point temperature can be raised as high as 10 C (50F) by following the
instructions in Controller Operation for changing the temperature set point. The 2.2C differential will be
maintained regardless of the controller set point.

Automatic Defrost

REF Series refrigerators do not require manual defrosting. The unit defrosts automatically when the condensing
unit is in the OFF cycle.

Any accumulated frost on the evaporator coil melts during the OFF cycle. The condensate drains to a plastic
drain pan mounted below the condensing unit. The heat from the condensing unit evaporates any condensate in
the drain pan.

Controller Operation

In normal operation, the controller displays product temperature in degrees C (default) or user-selected degreesF.

The controller is pre-programmed with a 4.4 C (40F) set point. COMP displays when the compressor is running.
If this set point does not meet your specic application needs, instructions for changing the set point are found
below.

Note: Follett presets its refrigeration system to hold product temperature at approximately 4.4 C (40F). If you are

using this in a food service application, and installing in accordance with NSF, you must set the control
set-point to 3.3 C (38F). This will deliver a product temperature below the 4.4 C (40F) NSF requirement.

Controller Display

The controller display will show the product/bottle temperature in degrees C or degrees F as selected by the user
except when the unit is in an alarm.

The controller has system indicators above the temperature display to let you know when: the compressor is
energized (COMP), the evaporator fan is energized (FAN) or the unit is in defrost (DEF).

To display temperature Set-point

Step Input Display

1 Press and release SET Current set-point temperature will display for approximately 5 seconds.

Display will return to current product temperature.

To change temperature Set-point

Step Input Display

1 Press and hold SET for 3 seconds Set-point will ash.

2 Press UP or DOWN arrows to desired

set-point

3 Press and release SET to accept Product temperature will display.

New temperature set-point will ash on the display.

REF1/REF2 Compact Refrigerators 13

Controller Security

The controller can be locked so that the set-points in the controller cannot be changed.

1. To lock, press UP and DOWN arrows simultaneously until LOC appears (approximately 5 s).

2. To unlock the controller, press up and down arrows simultaneously until UNL appears. Changes are only

accepted when the controller is unlocked.

Changing Temperature Display from C to F

1. Press SET and UP arrow simultaneously until L1 is displayed.

2. Press the UP arrow until UNT is displayed. Press SET then use the UP and DOWN arrows to change

the temperature display from C to F. Press SET to accept. The display will return to the temperature in
approximately 10 s.

Changing Temperature Display from Decimal to Integer

1. Press SET and UP arrow simultaneously until L1 (rst level menu) is displayed. Release.

1. Press SET and UP arrow simultaneously until L2 (second level menu) is displayed.

2. Press the UP arrow until rES is displayed. Press SET then use the UP and DOWN arrows to select Int
(integer) instead of Dec (decimal). Press SET to accept.

Sleep Function

Press the SLEEP button to blank the display, or press any button to wake the display. If the unit goes into an
alarm, the display will wake to display the alarm.

Minimum and Maximum Temperature Function

Records the highest and lowest temperatures logged by the probe selected to be displayed. Default display probe
is P3 (product simulation bottle probe).

High and low log display

1. Press the UP arrow to display the highest temperature the freezer has recorded since last reset or power

cycle.

2. Press the DOWN arrow to display the lowest temperature that the freezer has recorded since last reset
or power cycle.

Reset high and low log

1. Press UP or DOWN arrow until recorded temperature is displayed.

2. Press and hold SET until RST is displayed.

Alarming Functions

Set high and low alarms

1. Press and hold SET and UP arrows simultaneously until L1 is displayed. Use the UP and DOWN arrows

to navigate parameters.

2. The low temperature alarm parameter is AlL. Once the parameter is displayed, press SET to display the
low alarm temperature. The alarm temperature will ash on the display. Use the UP and DOWN arrows
to set the alarm temperature. Press SET to accept.

3. The high temperature alarm parameter is AlH. Once the parameter is displayed, press SET to display
the high alarm temperature. The alarm temperature will ash on the display. Use the UP and DOWN
arrows to set the alarm temperature. Press SET to accept.

14 REF1/REF2 Compact Refrigerators

Start-up alarm delay

The refrigerator unit has a 120 minute time delay between when the unit is energized to when the temperature
alarms become active. This delay can be change in parameters in the controller under Alarm Startup Delay

(ASd).

Mute the Alarms

The mute button is used to temporarily mute the audible alarm for 10 minutes. If the alarm condition of the unit
has not changed in 10 minutes, then the alarm will sound again.

Alarm acknowledgement and alarm Reset

The alarm will need to be acknowledged after the alarm condition has been resolved, before the alarm will reset.
To acknowledge the alarm press and hold set until the RST is displayed.

Probe calibration

The temperature probes can be calibrated from –9.9 to +9.9. The calibration is in the second level menu under
P1C (control probe) P3C (Alarm).

Alarm Codes

When the unit senses an alarm, the display will ash the following codes.

Value Description

HA1

LA1 Temperature is below the low Alarm #1 set point.

HA2 Temperature is above the High Alarm #2 set point.

LA2 Temperature is below the Low Alarm #2 set point.

Lob Low battery alarm.

Temperature is above the High Alarm #1 set point.

Error Codes

Value Description

P1-P8 Controller is not sensing the probe.

F9 Error saving new parameter values to permanent storage.

F10 Incomplete model conguration.

F21 Key shorted on user interface.

F22 Communication error with user interface.

F23 Communication error with Machine Control.

Alarming Contacts – Optional Accessory

This unit can be equipped with dry contacts that may be connected
to a 3rd party monitoring system. The dry contacts would have 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.

Fig. 22 - Rear Panel Connections
(when installed)

ALARM 1

1A/30VDC

Gr

Bl

R

N.C.

N.O.

COM

REF1/REF2 Compact Refrigerators 15

Advanced Settings

The refrigerator can be further customized through the rst level (L1) and second level parameters (L2) in the
chart below.

1. Press and hold SET and UP arrows simultaneously until L1 is displayed.

2. Use the UP and DOWN arrows to navigate the parameters. When the desired parameter is displayed,
press SET.

3. Use the UP and DOWN arrows to navigate the sub menu of the parameter. Press SET to accept and

the display will return to the parameter list (after 30 seconds the display will return to the temperature
display).

Parameter Display Description

Beeper Function bPr Controls the audible beeper function on the controller. Off, All, door, Alarm,

Error.

Beeper Volume bPu Sets the volume of the beeper: 0 (minimum) to 10 (maximum).

Button Clicks btc Sets if a beep should sound each time a button is pressed. Yes or No.

Sleep Function SLP Determines if sleep function activated from the panel. Yes or No.

Sleep Timer SLt Amount of time before the screen blanks automatically. 0 s to 600 s.

Alarm1 High Temp A1H High temperature to activate alarm1. User set point to 121 C (250 F).

Alarm1 Low Temp A1L Low temperature to activate alarm1. User set point to –46 C (–50 F).

Alarm1 Probe A1P Probe for Alarm. P1 (cabinet air), P3 (simulation bottle).

Units unt Display temperatures in degrees C or F. F or C.

1. Press and hold SET and UP arrows simultaneously until L1 is displayed.

2. Press and hold SET and UP arrows simultaneously again until L2 is displayed.

3. Use the UP and DOWN arrows to navigate the parameters. When the desired parameter is displayed,
press SET.

4. Use the UP and DOWN arrows to navigate the sub menu of the parameter. Press SET to accept and

the display will return to the parameter list (after 30 seconds the display will return to the temperature
display).

Parameter Display Description

Alarm1 Delay A1d Alarm1 delay before sounding. 0 to 60 minutes

Alarm1 Function A1F Denes the action taken when Alarm2 is activated. NO (normally open), NC

(normally closed), R1 (activate relay), R2 (not used), DIS (disable).

Alarm1 Reset A2r Temperature difference to reset alarm1. 0 to 10 degrees.

Alarm2 Delay A2d Alarm1 delay before sounding. 0 to 60 minutes.

Alarm2 Function A2F Denes the action taken when Alarm2 is activated. NO (normally open), NC

(normally closed), R1 (activate relay), R2 (not used), DIS (disable).

Alarm2 Reset A2r Temperature difference to reset alarm1. 0 to 10 degrees.

Alarm Ring back Arb Denes the time delay until the alarm will resound. 0 to 120 minutes

Alarm Startup Delay ASd Denes the alarm delay during startup. 0 to 180 minutes.

Alarm Silencing ASL Determines if the alarms can be silenced or not. Yes, No.

Maintain Alarm nAL Determines if the alarm (1-3) should be maintained if the temperatures fall

back into range. Yes, No.

Probe 1 Calibration P1C Offset value for probe 1 calibration. -9.9 to 9.9.

Probe 3 Calibration P3C Offset value for probe 3 calibration. -9.9 to 9.9.

Controller Parameter

rSt Reset to restore factory parameters.

Reset

16 REF1/REF2 Compact Refrigerators

Follett Keypad Lock

Default user passcode for rst-time users

User Code 01 is factory set by default to 1 2 3 4 5 6.

User Codes 01 to 40 do not have any codes set up and are available for user-programming.

Each time a button is pressed, a chirp will be heard.

To Change the Master Code

The master code is needed to add or change the individual user codes. By default, the master code is set to
1 2 3 4 5 6.

The master code is stored in User ID # 99.

1. Press 3 6 5, the *, followed by the current Master Code, followed by ENTER (5 chirps will be heard).

2. Press 9 9, followed by ENTER. (3 chirps will be heard).

3. Enter the new master code, followed by ENTER (3 chirps will be heard).

4. Re-enter the new master code, followed by ENTER. (5 chirps will be heard).
– Pressing [CANCEL] at any point will cancel the routine.

To Enter or Change a User Code

1. Press 3 6 5, the *, followed by the Master Code, followed by ENTER. 5 chirps will be heard.

2. Enter the user ID (a two digit code from 00 to 40), followed by ENTER. 3 chirps will be heard.

3. Enter the new user code (4 to 6 numbers), followed by ENTER. 3 chirps will be heard.

4. Re-Enter the new User Code, Followed by ENTER. 5 chirps will be heard to acknowledge that a new

code was entered.

Example: To enter a new user code of 4 4 3 3 5 5 for ID # 15

1. Press 3 6 5 * 1 2 3 4 5 6 [ENTER] (5 chirps will be heard).

2. Press 1 5 [ENTER] (3 chirps will be heard).

3. Press 4 4 3 3 5 5 [ENTER] (3 chirps will be heard).

4. Press 4 4 3 3 5 5 [ENTER] (5 chirps will be heard).

The new code has been entered for the ID.

To Delete a User Code

1. Press 3 6 5, the *, followed by the Master Code, followed by ENTER. 5 chirps will be heard.

2. Enter the user ID to clear, followed by ENTER (3 chirps will be heard).

3. Press 3 3 5, # (3 chirps are heard) (335 = DEL).

4. Enter the user ID to clear, followed by ENTER (2 chirps will be heard).

5. Press 3 3 5, # (5 chirps are heard).

The code assigned to that user ID has been deleted. If an error is encountered, the control will beep
continuously for 3 seconds. The Master Code stored in user ID 99 cannot be deleted.

Example: To delete the user code in ID 15:

1. Press 3 6 5 # 1 2 3 4 5 6 [ENTER] (5 chirps will be heard).

2. Press 1 5 [ENTER] (3 chirps will be heard).

3. Press 3 3 5, # (3 chirps will be heard) (335 = DEL).

4. Press 1 5 [ENTER] (2 chirps will be heard).

5. Press 3 3 5, # (5 chirps will be heard).

REF1/REF2 Compact Refrigerators 17

Service

Door Gasket Replacement

1. Remove existing gasket from mounting track (Fig. 23).

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.

Access Compressor Compartment

Follett’s compressor compartment allows technicians to gain full
access to the condensing unit from the refrigerator back without cutting
refrigerant lines.

1. Remove rear panel (Fig. 24).

2. Remove two screws facing downward that secure the panel

assembly to the base plate.

3. Loosen the six screws that secure the rear panel to the back of
the refrigeration box. Lift rear panel off to access (Fig. 25).

Fig. 23

Fig. 24

Changing the Back-up Batteries

1. Follow the instructions in the Battery Backup section page 6.

2. After Step 7, disconnect the battery connector (with black and

red wires) from the top of the battery pack.

3. Remove the eight AA batteries from the battery pack.

4. Install eight new AA batteries into the battery pack.

5. Continue with Step 8 of the Battery Backup section.

Fig. 25

18 REF1/REF2 Compact Refrigerators

Controller Replacement

1. Turn power switch to the OFF position and unplug the unit from

the power supply.

2. Remove the two screws (Fig. 26) on the front panel at the
bottom of the unit.

3. Remove the front panel and slide the panel to the right of the
refrigerator.

Note: Take care when removing, some wires may be connected to

the front panel.

Fig. 26

4. Find the control module and remove the screw at the front of
the module (Fig. 27).

5. Lift the module and pull forward.

Fig. 27

REF1/REF2 Compact Refrigerators 19

Wiring Diagram

20 REF1/REF2 Compact Refrigerators

Checking Refrigeration System Pressures

CAUTION!

Please contact Follett Technical Service at [phone] or [phone] in the event of a
refrigeration problem that requires evacuation and recharging.

REF1, REF2

REF1 REF2

Condenser inlet air temperature 70 F (21.1 C) 80 F (26.6 C) 70 F (21.1 C) 80 F (26.6 C)

Suction pressure (psig) 13.0 14.0 13.0 14.0

Discharge pressure (psig) 126 140 126 140

Note: Do not attempt to obtain correct refrigeration pressures by adjusting the system charge.

Refrigeration System Diagram

CAPILLARY TUBE

FILTER-DRIER

Compressor Information

Danfoss model TL2.5

Run load amps (RLA) 2

Lock rotor amps (LRA) 16

Ohms start winding to common 4.9

Ohms run winding to common 5.3

Ohms start winding to run winding 10.2

COMPRESSOR

EVAPORATOR

CONDENSER

HIGH-PRESSURE VAPOR

HIGH-PRESSURE LIQUID

LOW-PRESSURE LIQUID

LOW-PRESSURE VAPOR

REF1/REF2 Compact Refrigerators 21

Refrigerator Troubleshooting

Before calling for service

1. Check that unit is plugged in.

2. Test outlet with another appliance to verify power.

Troubleshooting Matrix

Sympton Possible Cause Solution

Refrigerator does not operate (no
components run).

Compressor does not run. Thermal overload open or defective. Allow to cool or replace.

Evaporator fan motor does not run. Defective fan motor. Replace fan motor.

Refrigerator does not shut off. Controller not sensing cut-off

Refrigerator does not maintain
temperature (all components run).

Power switch faulty or in OFF position;
loose connection.

Refrigerator not plugged in. Connect plug.

No power to cord. Restore power.

Temp controller not energizing
components.

Probe not sensing set point
temperature.

Capacitor and/or relay defective. Replace as required.

Compressor defective. Replace compressor.

temperature.

Controller keeping refrigeration system
energized.

Condensor or evaporator coil needs
cleaning.

Faulty door gasket. Replace door gasket.

Excessively high ambient or
indadequate air clearance.

Refrigerant leak. Locate and repair leak.

Incorrect refrigerant charge. Recover, evaluate and weigh in correct

Plugged capillary tube. Replace capillary tube and lter drier.

Inefficient compressor. Consult technical services.

Turn power switch to ON; check switch
and connections.

Check controller contact terminals for
power. Replace controller if needed.

Replace controller and/or probe.

Replace controller and/or probe.

Replace controller.

Clean coils.

Maximum recommended ambient
is 100F (38 F). See Locating the

Refrigerator on page 5.

charge.

If problems persist after following this basic troubleshooting guide, call Follett technical service
group at [phone] or [phone].

22 REF1/REF2 Compact Refrigerators

Accessories

The following accessories are available for Performance Plus undercounter refrigerators. Instruction sheets are
available in the download section of the Follett website (www.follettice.com).

Temperature Surveillance Module Accessory (P/N 00168674)

§ Reference instruction 00168609 (packed with module)

Temperature Alarm Accessory (P/N 00112185)

§ Reference instruction 00112052 (packed with temperature alarm accessory)

Digital Data Logger (P/N 01057561)

§ Reference instruction 01057579 (packed with digital data logger)

Digital data logger includes the following:

Description Part #

Temperature probe certicate of traceability Calibration by Dickson (NIST)
and ISO/IEC 17025

DicksonWare software and USB cable 01057603

AC power adapter 01 0 5 7 6 11

60 ml product simulation bottle 00112 037

Velcro, hook and loop fastener 206406

Glycerine - 16 oz. bottle (P/N 00959296)

01057595

Wall-mount Kit (P/N 00969949)

§ Reference instruction 00969642

Remote Alarm Contact Accessory (P/N 01092022)

REF1/REF2 Compact Refrigerators 23

Replacement Parts

2

12

13

7

1

8

3

14

11

4

10

15

9

16

5 6

24 REF1/REF2 Compact Refrigerators

Hardware

Reference # Description Part #

1 Door with gasket and lock strike bracket, REF1 00 953182

1 Door with gasket and lock strike bracket, REF2 00953174

2 Gasket, door, REF1 00960823

2 Gasket, door, REF2 00960831

3 Hinge, top with spring and hardware 0105 3677

4 Hinge, bottom 00940478

Not shown Hinge kit, top and bottom with hardware 0105 368 5

5 Spring bolt lock 01065507

6 Spring bolt with latch, bracket, and hardware 010 8170 2

7 Lock, deadbolt with keys 00959528

8 Bracket, lock mounting 010 4192 0

9 Panel, front 01081660

Not shown Panel, front with keypad 01081678

10 Battery pack 01085018

Not shown Foot pads 00900134

11 Screws, front panel (2 required) 203460

12 Strip sealer, REF1/2, /FZR1/2 010 8173 6

Not shown Fascia heater, REF1 01064641

Not shown Fascia heater, REF2 01064666

13 Shelf 01037266

14 Bracket, lock strike 010 41953

15 Display, controller 0108 5794

Not shown Bracket, bottle 00 961656

Not shown Bottle, solution, 60 mL 00112 037

Not shown Gasket, bottle 0012029

16 Read switch 01053917

Not shown Pila ste r, sc rew 206796

Not shown Pilaster 00961334

Not shown Support, shelf 00156240

REF1/REF2 Compact Refrigerators 25

Evaporator

5

6

4

3

2

1

Reference Description Part #

1 Cover, Evaporator, REF1 00958728

Not shown Cover, Evaporator, REF2 00958975

2 Drain Pan, Evaporator, REF1 and REF2 00961037

3 Coil, Evaporator/Condenser, REF1 and REF2 00939835

4 Shroud, Evap Fan, REF1 and REF2 00958736

5 Motor, Fan 00940460

6 Guard, Fan 00940452

Not shown Bracket, Probe Guard 00980854

26 REF1/REF2 Compact Refrigerators

Compressor Components

6

5

4

1

2

3

8

7

Reference Description Part #

1 Compressor, REF1 and REF2 (includes 00959510, 00961631, 00997959) 01053529

2 Bracket, Compressor Support, REF1 and REF2 00958694

3 Switch, Rocker, Recessed 00967604

4 Capillary Tube, REF1 and REF2 00959510

5 Filter/Drier 00961631

6 Coil, Evaporator/Condenser, REF1 and REF2 00939835

7 Baffle, Air 0 0 9 6 5814

8 Shroud, Condenser Fan, REF1 and REF2 00958744

9 Motor, Fan 00940460

Not shown Cord, Power, NEMA 5-15 Hospital Grade 00 961268

Not shown PTC Starting Device, Compressor 00997957

9

REF1/REF2 Compact Refrigerators 27

Control Board

2

1

4

Reference Description Part #

1 Control board, REF1/2 01085802

1 Control board, keypad, REF1/2 - KP models 0108 5810

2 Compressor relay 01042092

Not shown Probe, temperature 01062801

3 Mounting plate, control board 01062110

Not shown Stand offs, control board 00903005

Not shown Mounting plate screw 204511

4 Driver board 01085844

Follett is a registered trademark of Follett Corporation, registered in US.

3

801 Church Lane • Easton, PA 18040, USA
Toll free [phone] • [phone]
www.follettice.com

00940593R06

© Follett Corporation 3/15