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 specifications . . . . . . . . . . .	4
Refrigeration specifications . . . . . . . . .	. 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

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 filing of a claim, if necessary.

Check your paperwork to determine which configuration you have. Follett configuration 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

Configuration – 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

Specifications

	REF20-LB	REF25-LB	REF20-PH	REF25-PH	REF20-BB	REF25-BB
Capacity	19.7 cu ft	24.6 cu ft	19.7 cu ft	24.6 cu ft	19.7 cu ft	24.6 cu ft
	(558 L)	(697 L)	(558 L)	(697 L)	(558 L)/ 280	(697 L)/ 360
					bags (450ml)	bags (450ml)
Storage	(4) epoxy-	(4) epoxy-	(6) epoxy-	(6) epoxy-	(6) stainless	(6) stainless
system	coated shelves	coated shelves	coated baskets	coated baskets	steel drawers	steel drawers
Exterior	29.75" (76 cm)	29.75" (76 cm)	29.75" (76 cm)	29.75" (76 cm)	29.75" (76 cm)	29.75" (76 cm)
width
Exterior	29" (74 cm)	35" (89 cm)	29" (74 cm)	35" (89 cm)	29" (74 cm)	35" (89 cm)
depth
Exterior	30.5" (78 cm)	36.5" (93 cm)	30.5" (78 cm)	36.5" (93 cm)	30.5" (78 cm)	36.5" (93 cm)
depth with
handles
Exterior	79.5" (202 cm)	79.5" (202 cm)	79.5" (202 cm)	79.5" (202 cm)	79.5" (202 cm)	79.5" (202 cm)
height with
casters
Interior	24" x 22.5" x 56"	24" x 28.5" x 56"	24" x 22.5" x 56"	24" x 28.5" x 56"	24" x 22.5" x 56"	24" x 28.5" x 56"
dimensions	(61 cm x 58 cm x 143 cm)	(61 cm x 73 cm x 143 cm)	(61 cm x 58 cm x 143 cm)	(61 cm x 73 cm x 143 cm)	(61 cm x 58 cm x 143 cm)	(61 cm x 73 cm x 143 cm)
(w x h x d)
Crated	395 (180 kg)	430 (196 kg)	450 (205 kg)	485 (220 kg)	475 (216 kg)	525 (239 kg)
weight
Max. heat	950 BTU/hr	1050 BTU/hr	950 BTU/hr	1050 BTU/hr	950 BTU/hr	1050 BTU/hr
rejection

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 specifications

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 specifications

Refrigerant R134a, 11.4 oz (322g)

Detail drawing

76.75"

(195cm)

79.5"

(202cm)

29.75"

(76cm)

REF20 30.5" (78cm)

REF25 36.5" (93cm)

Required Clearances

1.0" (2.5 cm) for power cord; 2.0" (2.5 cm) if outlet directly behind unit

10.0"

(25.4cm)

4

Welcome to Follett

00926170 – REF20/25 LB, PH, BB

Installation

DANGER

•Do not tilt any unit further than 30° off vertical during uncrating or installation

•Refrigeration module area contains mechanical, moving

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

		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 floor 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 film from exterior walls of stainless cabinet.			2
			1
Adjust self-closing door		Fig. 2
1.	Roll refrigerator to desired location and lock as many casters as		2
	possible (Fig 2.1).		Hold Open
2.	If the door appears to be sagging, remove the philips screw (Fig. 2.2)		Bracket
	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			4
	align the door squarely with the freezer cabinet. When finished, reinstall
	the Hold Open Bracket.		3
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			1
	you achieve positive close. (Light will go out) Then, turn another half
	turn counterclockwise.
Install shelves (if equipped) and power up		Fig. 3
1. If refrigerator is equipped with shelves, remove bag containing shelf
	supports and position them in desired locations on each pilaster and
	insert shelves (Fig. 3).	1	2
2. Plug refrigerator into a 115V 60Hz 15 amp dedicated outlet.
			3
00926170 – REF20/25 LB, PH, BB			Installation	5

Fill product bottle

1.Remove probe and cap from the top bottle and fill 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 filled 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).

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.)

Fig. 4
Fig. 5
	1
Fig. 6
	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
RS485 Port		Alarm Contacts

00926170 – REF20/25 LB, PH, BB

Installation

7

Operation

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 first.

		Fig. 8
	Interior LED lights
		4.0C
	Interior lighting of refrigerator with door closed is controlled by light switch
	(Fig 8.1) on interface.	Bottom Temp 3.5C
	Lights will be on whenever door is open regardless of light switch selection.		1

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.

Fig. 9  

Set time & date

Set time and date for stamping of minimum and maximum temperatures. 1. Press Menu button (Fig. 9).

4.0C

Bottom Temp 3.5C Menu

8

Operation

00926170 – REF20/25 LB, PH, BB

2. Useto scroll and highlight Set time/date and press Enter to select (Fig. 10).

3.Adjust the year usingand press NEXT.

4.Adjust the month usingand press NEXT.

5.Adjust the day usingand press NEXT.

6.Adjust the hour usingand 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.

Fig. 10  

	Set time/date			4.0C
	Set Alar m Volume
	Alar m Silence
			Back	Enter

Fig. 11  

Set year : 2009

3.4C

2009 10/19 16:13

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.Useto scroll and highlight Display Settings and press Enter to select (Fig. 13).

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

4.Useto scroll and highlight F and press Enter to select.

5.Press Back button until the main temperature display screen is displayed.Temperature is displayed in degrees F.

Fig. 12  

4.0C

Bottom Temp 3.5C

Menu

Fig. 13  

	Alarm Settings			4.0C
	Display Settings
	Min/Max Temperatures
	Batt = 8.5V OK
			Back	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

Bottom Temp 3.5C Menu

Fig. 15  

	Alarm Settings			4.0C
	Display Settings
	Min/Max Temperatures
	Batt = 8.5V OK
			Back	Enter

Fig. 16  

3.Useto scroll and highlight High Alarm Set and press Enter to select (Fig. 16).

High Alarm Set	4.0C
Low Alarm Set

Back Enter

Fig. 17  

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

High Alarm Setpoint 4.0C

40.0C

Back Enter

10

Operation

00926170 – REF20/25 LB, PH, BB

Fig. 18  

5.Useto scroll and highlight Low Alarm Set and press Enter to select (Fig. 18).

	High Alarm Set			4.0C
	Low Alarm Set
			Back	Enter

Fig. 19  

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

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

Low Alarm Setpoint			4.0C
1.0C
		Back	Enter

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	Conditions
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 flashes 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 fixed 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).

Fig. 20  

Door Ajar Alarm

4.0C

MENU	15 min MUTE

12

Operation

00926170 – REF20/25 LB, PH, BB

Alarm volume selection

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

1.Press Menu button (Fig. 21).

2.Useto scroll and highlight Set Alarm Volume and press Enter to select (Fig. 22).

3.Useto select the volume (high/medium/low) and press Enter to select (Fig. 23).

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

Alarm silence

Audible alarming can be turned off through the menu interface: 1. Press Menu button (Fig. 24).

Fig. 21  

4.0C

Bottom Temp 3.5C Menu

Fig. 22  

	Set Alarm Volume			4.0C
	Alarm Silence
			Back	Enter

Fig. 23  

Buzzer Volume

4.0C

HIGH

Back Enter

Fig. 24  

4.0C

Bottom Temp 3.5C

Menu

00926170 – REF20/25 LB, PH, BB

Operation

13

2.Useto 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.

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.Useto scroll and highlight Password on/off option and press Enter to select (Fig. 28).

Fig. 25  

	Set Alarm Volume			4.0C
	Alarm Silence
			Back	Enter

Fig. 26  

Audible Alarm

4.0C

ON

Back Enter

Fig. 27  

4.0C

Bottom Temp 3.5C

Menu

Fig. 28  

	Refrigeration Controls			4.0C
	Password on/off
	PIN
	Set time/date
			Back	Enter

14

Operation

00926170 – REF20/25 LB, PH, BB