Follett REF20-25-PH Service Manual

REF 20/25 – LB

REF 20/25 – PH

REF 20/25 – BB

Order parts online
www.follettice.com

Installation, Operation and Service Manual

Following installation, please forward this manual

totheappropriate operations person.

801 Church Lane • Easton, PA 18040, USA
Toll free [phone] • [phone]

www.follettice.com

00926170R09

Contents

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

Before you begin ........................... 3

Ambients ................................. 4

Clearances ............................... 4

Electrical specications ..................... 4

Refrigeration specications .................. 4

Detail drawing ............................. 4

Installation ...........................5

Adjust self-closing door (if necessary) .......... 5

Install shelves (if equipped) and power up ....... 5

Fill product bottle. . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Remote alarm connections (if desired) ......... 7

Dry contacts ........................... 7

RS-485 port ........................... 7

Operation ...........................8

Quick setup checklist ....................... 8

Interior LED lights .......................... 8

Set time & date ............................ 8

Change temperature display to show degrees

Fahrenheit (if desired) ....................... 9

High and low alarm setup ....................10

Alarms .................................. 12

Alarm muting ............................ 12

Alarm volume selection .................... 13

Alarm silence ............................ 13

Password PIN security (default is 3843) ....... 14

To turn password on/off .................... 14

To make a new password PIN ............... 15

Min/max temperature logging ................ 16

Probe calibration .......................... 17

Chart recorder set up (if so equipped) ......... 18

Chart recorder calibration ................... 18

Changing the chart paper ................... 18

Replacing the pen ......................... 18

Removing drawers ........................ 19

Removing slides .......................... 19

Cleaning ............................20

Interior cleaning .......................... 20

Exterior cleaning .......................... 20

Annual cleaning .......................... 21

Service .............................22

Refrigeration system ....................... 22

Defrosting .............................. 22

Controller operation ....................... 23

Temperature sensor readings ................ 23

Heated door (option) – changing cycle ........ 24

Controller hot key ......................... 27

Hot key upload ........................... 27

Hot key download ......................... 28

Troubleshooting .....................34

Before calling for service ................... 34

Appendix ...........................35

Control key functions ...................... 35

Menu Navigation table ..................... 35

Replacement parts ...................36

Unit cooler ............................... 36

Cabinet ................................. 37

Facade ................................. 38

Door assembly ........................... 39

2 00926170 – REF20/25 LB, PH, BB

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 conguration you have. Follett conguration numbers are designed to
provide information about the type of refrigerator you are receiving. Following is an explanation of the different item
numbers.

Model

Cubic foot capacity – 20, 25

Conguration – LB (Laboratory - shelves), PH (Pharmacy - baskets),
BB(Bloodbank - drawers)

Door hinge – R (Right hand), L (Left hand)

Door heater option – 00 (No door heater), HT (door heater)

Chart recorder option – 00 (No chart recorder), CR (Chart recorder)

REF 20 LB R 00 00

REF20-LB REF25-LB REF20-PH REF25-PH REF20-BB REF25-BB

Capacity

Storage
system

Exterior

width

Exterior

depth

Exterior

depth with
handles

Exterior
height with

casters

Interior
dimensions

(w x h x d)

Crated

weight

Max. heat
rejection

19.7 cu ft
(558L)

(4) epoxy-

coated shelves

29.75" (76 cm) 29.75" (76 cm) 29.75" (76 cm) 29.75" (76 cm) 29.75" (76 cm) 29.75" (76 cm)

29" (74 cm) 35" (89 cm) 29" (74 cm) 35" (89 cm) 29" (74 cm) 35" (89 cm)

30.5" (78 cm) 36.5" (93 cm) 30.5" (78 cm) 36.5" (93 cm) 30.5" (78 cm) 36.5" (93 cm)

79.5" (202 cm) 79.5" (202 cm) 79.5" (202 cm) 79.5" (202 cm) 79.5" (202 cm) 79.5" (202 cm)

24" x 22.5" x 56"

(61 cmx 58 cm x 143 cm)

395 (180 kg) 430 (196 kg) 450 (205 kg) 485 (220 kg) 475 (216 kg) 525 (239 kg)

950 BTU/hr 1050 BTU/hr 950 BTU/hr 1050 BTU/hr 950 BTU/hr 1050 BTU/hr

24.6 cu ft

(697L)

(4) epoxy-

coated shelves

24" x 28.5" x 56"

(61 cmx73 cm x 143 cm)

Specications

19.7 cu ft
(558L)

(6) epoxy­coated baskets

24" x 22.5" x 56"

(61 cmx 58 cm x 143 cm)

24.6 cu ft

(697L)

(6) epoxy­coated baskets

24" x 28.5" x 56"

(61 cmx 73 cm x 143 cm)

19.7 cu ft

(558L)/ 280
bags (450ml)

(6) stainless
steel drawers

24" x 22.5" x 56"

(61 cmx 58 cm x 143 cm)

24.6 cu ft
(697L)/ 360
bags (450ml)

(6) stainless
steel drawers

24" x 28.5" x 56"

(61 cmx 73 cm x 143 cm)

00926170 – REF20/25 LB, PH, BB Welcome to Follett 3

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

Ambients

Intended for indoor use where ambient temperature typically 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

115V, 60Hz, 1 phase

Running load amps: 8.4 amps without heated door; max 9.7 amps with door heater energized 100% (adjustable).

Full load amps (90% maximum continuous current per UL 471 at 40 C): 10.5 amps

Minimum circuit ampacity: 15 amp dedicated circuit

Maximum size of branch circuit overcurrent device: 15 amp dedicated circuit

Refrigeration specications

Refrigerant R134a, 11.4 oz (322g)

Detail drawing

Required Clearances

1.0" (2.5 cm)
for power cord;

76.75"

(195cm)

(202cm)

2.0" (2.5 cm) if
outlet directly
behind unit

79.5"

10.0"

(25.4cm)

29.75"

(76cm)

4 Welcome to Follett 00926170 – REF20/25 LB, PH, BB

REF20

30.5" (78cm)

REF25

36.5" (93cm)

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.

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.

Fig. 1

2

1

Adjust self-closing door

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.

Install shelves (if equipped) and power up

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 115V 60Hz 15 amp dedicated outlet.

Fig. 2

Fig. 3

1

2
Hold Open
Bracket

4

3

1

2

3

00926170 – REF20/25 LB, PH, BB Installation 5

Fill product bottle

1. Remove probe and cap from the top bottle and ll with solution used at
your facility (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.

ATTENTION INSTALLER

Itisimperativethatthetopprobebottlebelledwithasolutionthatyour
facilityusestoensureproperoperationofunit.

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.

5. Press lower left corner of front facade door to access power switch

inside (Fig. 5.1).

Fig. 4

Fig. 5

1

Fig. 6

6. Press power switch to turn unit on (Fig. 6.1).

7. Install (2) 9V back-up interface batteries (Fig. 6.2) and (1) 9V chart

recorder back-up battery (if equipped.)

1

2

6 Installation 00926170 – REF20/25 LB, PH, BB

Remote alarm connections (if desired)

Remote communication connections are located on back side of top facade
(Fig.7).

Drycontacts

• Connection to NO or NC contacts provides remote alarming capability

• No temperature data is communicated

RS-485 port

• Connection provides real-time data streaming

– Temperature

– Alarms
– Refrigeration operation

• MODBUS protocol

• Uses 6 pin, 4 conductor RJ11 jack (not supplied)

Fig. 7

Hotkey

Common
N/O
N/C

Alarm Contacts

RS485 Port

00926170 – REF20/25 LB, PH, BB Installation 7

Operation

4.0C

Quick setup checklist

• Set time/date

• Change temperature display from factory default Celsius to Fahrenheit (if desired)

• Set high/low temperature alarms

• Select password access (if required)

• Setup chart recorder (if equipped)

• Verify solution is in bottle

DANGER

• Donotextendallofthedrawersorbasketswhen
fullyloadedtoavoidthepossibilityoftherefrigerator

tipping forward

• 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. 8

Interior LED lights

Interior lighting of refrigerator with door closed is controlled by light switch
(Fig 8.1) on interface.

Lights will be on whenever door is open regardless of light switch selection.

ATTENTION

• Thetime/datearenotretainedintheeventofapowerinterruptionorifthebatteriesaredead.

• Changebatterieswiththeunitpoweredup.Changeonebatteryatatimetoretaintime/date.Failuretofollowthis

procedure will result in loss of time & date and will not provide accurate time and date stamping for high or low
temperature alarms.

Temp 3.5C

Fig. 9

Set time & date

Set time and date for stamping of minimum and maximum temperatures.

1. Press Menu button (Fig. 9).

4.0C

B ottom Temp 3.5C

Menu

1

8 Operation 00926170 – REF20/25 LB, PH, BB

Fig. 10

2. Use

to scroll and highlight Set time/date and press Enter to

select (Fig. 10).

3. Adjust the year using

and press NEXT.

4. Adjust the month using and press NEXT.

5. Adjust the day using and press NEXT.

6. Adjust the hour using

and press NEXT. (24 HR Clock)

7. Adjust the minute using .

8. Press Enter to select values.

9. Press Back until the main temperature display screen is displayed.

S et time/date
S et Alarm V olume
Alarm Silence

Fig. 11

S et year: 2009

2009 10/19 16:13

4.0C

Back Enter

3.4C

Next Enter

Change temperature display to show degrees
Fahrenheit (if desired)

Follett has pre-set the temperature display to read in degrees Celsius. If
degrees Fahrenheit display is preferred:

1. Press Menu button (Fig. 12).

2. Use

select (Fig. 13).

3. Use to scroll and highlight Degrees F/C and press Enter to
select.

4. Use

5. PressBack button until the main temperature display screen is

displayed. Temperature is displayed in degrees F.

to scroll and highlight DisplaySettings and press Enter to

to scroll and highlight F and press Enter to select.

Fig. 12

Menu

Fig. 13

Alarm Settings
Display Settings
M in/Max Te mperatures
Batt = 8.5V OK

4.0C

B ottom Temp 3.5C

4.0C

B ack Enter

00926170 – REF20/25 LB, PH, BB Operation 9

High and low alarm setup

The high alarm is set to a default of 40 C (104 F) from the factory. This
default setting is used so that the alarm will not sound while the unit is
pulling down to temperature. The low alarm default setting is 1.0 C (33.8 F).

After the unit has been installed and the system has stabilized
(approximately 1 hr), the high and low alarm set points should be adjusted
to desired settings.

1. Press Menu button (Fig. 14).

2. Alarm Settings will be highlighted. Press Enter to select (Fig. 15).

Fig. 14

4.0C

B ottom Temp 3.5C

Menu

Fig. 15

3. Use

select (Fig. 16).

to scroll and highlight High Alarm Set and press Enter to

Alarm Settings
Display Settings
M in/Max Te mperatures
Batt = 8.5V OK

Fig. 16

High Alarm Set
Low Alarm Set

Fig. 17

4.0C

Back Enter

4.0C

Back Enter

4. Use to change set point and press Enter to accept (Fig. 17).

High Alarm Setpoint 4.0C

40.0C

BackEnter

10 Operation 00926170 – REF20/25 LB, PH, BB

Fig. 18

5. Use

to scroll and highlight Low Alarm Set and press Enter to

select (Fig. 18).

6. Use to change set point and press Enter to accept (Fig. 19).

7. Press Back until the main temperature display screen is displayed.

High Alarm Set
Low Alarm Set

Fig. 19

Low Alarm Setpoint 4.0C

1.0C

4.0C

BackEnter

BackEnter

00926170 – REF20/25 LB, PH, BB Operation 11

Alarms

The refrigerator has several alarms that will sound an audible and visual alarm. Alarm type is shown on the top
line of the alarm display and multiple alarms will show progressively on the display. A red LED, to the right of the
display, accompanies all alarms.

All active alarms are conveyed to remote alarm relays. Remote alarm relay provides a choice of either a normally
closed (NC) or normally open (NO) contact. It is recommended for use at 24V 1A (relay is rated for 250V 10A).

Alarmdisplayed

Temp Alarm Only top product temperature probe activates this alarm. Bottom product temperature probe,

if installed, is for display reference only.

Top Probe Error Activates with loss of signal from top probe (open or short circuit).

Bottom Probe Error Activates with loss of signal from bottom probe (open or short circuit).

Door Ajar Alarm Activates with door open longer than 1 minute.

AC Power Alarm Activates after 2 min delay with loss of AC power.

Display backlight will turn off to conserve battery life, but pressing any button will brighten
display for 30 seconds.

Low Battery Alarms Display activates when (2) 9V controller back-up batteries decrease to 7.5V (maximum 4 hr

back-up time remaining.) This alarm will audibly chirp every 5 minutes.
Chart recorder – LED ashes green.

All batteries should be changed at same time. Replace batteries one at a time with AC

powerontokeepcorrecttime/date.

Evap Probe Error Activates with loss of signal from refrigeration control evaporator probe (open or short circuit).

Refrigerator goes into a xed on/off cycle until corrected. Default settings are 4 minutes
compressor on time and 8 minutes compressor off time. Cycle on time and off time are
adjustable in faulty probe cycle sub-menu of refrigeration controls menu.

Alarm muting

All audible alarms can be muted for up to 60 minutes in 5 minute
increments by pressing the MUTE button. The desired mute period will
display, and count down, in the window adjacent the MUTE label (Fig.20).

Conditions

Fig. 20

Door Ajar Alarm

4.0C

MENUMUTE

12 Operation 00926170 – REF20/25 LB, PH, BB

15 min

Alarm volume selection

Factory default setting is “high”. To change volume of the alarm:

1. Press Menu button (Fig.21).

Fig. 21

4.0C

B ottom Temp 3.5C

Menu

Fig. 22

2. Use

select (Fig.22).

3. Use
select (Fig.23).

4. Press Back until the main temperature display screen is displayed.

to scroll and highlight Set Alarm Volume and press Enter to

to select the volume (high/medium/low) and press Enter to

Set Alarm Volume
Alarm Silence

Fig. 23

B uzzer Volume 4.0C

HIGH

4.0C

Back Enter

BackEnter

Alarm silence

Audible alarming can be turned off through the menu interface:

1. Press Menu button (Fig. 24).

Fig. 24

4.0C

B ottom Temp 3.5C

Menu

00926170 – REF20/25 LB, PH, BB Operation 13

Fig. 25

2. Use

to scroll and highlight Alarm Silence and press Enter to

select (Fig. 25).

3. Use

to select ON or OFF and press Enter to select (Fig. 26).

4. Press Back until main temperature display screen is displayed.

Set Alarm Volume
Alarm Silence

Fig. 26

Audible Alarm 4.0C

ON

4.0C

Back Enter

Back Enter

Password PIN security (default is 3843)

If desired, access to the user selectable features and settings can be
controlled by a password PIN. The refrigerator ships with the password
option turned off. The default password PIN, if the password is turned on, is

3843. This password pin number will always work.

To turn password on/off

1. Press Menu button (Fig.27).

2. Use
Enter to select (Fig.28).

to scroll and highlight Password on/off option and press

Fig. 27

Menu

Fig. 28

Refrigeration Controls
Password on/off
PIN
Set time/date

4.0C

B ottom Temp 3.5C

4.0C

Back Enter

14 Operation 00926170 – REF20/25 LB, PH, BB