Follett REF5-BB User Manual

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REF5-BB

Undercounter Blood Bank Refrigerator

Order parts online www.follettice.com

Installation, Operation and Service Manual

Serial numbers C45184 and above

Following installation, please forward this manual

to the appropriate operations person.

801 Church Lane • Easton, PA 18040, USA Toll free (800) 523-9361 • (610) 252-7301 Fax (610) 250-0696 • www.follettice.com

00193466R00

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 (800) 523-9361 or (610) 252-7301.

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.

Speci cations

REF5-BB 34" height for freestanding use or installation below standard 36" (915mm) high counter

2 drawer – up to 50 (450ml) bags

Maximum drawer load - 35 lbs (16kg) each

Electrical speci cations

115V, 60Hz, 1 phase

Full load amps: 8.0

Minimum circuit ampacity: 15 amp

Maximum size of branch circuit overcurrent device: 15 amp

Refrigeration speci cations

Refrigerant – R404A

Charge size – 10 oz

Maximum design pressures:

High side – 422psi Low side – 175psi

Installation speci cations

Ambient temperature must not exceed 100 F (38 C).

The front louvered panel must be kept free of any cabinet trim or obstructions to ensure proper ventilation of the refrigeration system.

Important cautions

• Equipment must be wired according to local and NEC codes.

• Always disconnect power before servicing refrigerator.

Installation

Fig. 1

Installing legs – required

1. Remove legs from plastic bag packed inside refrigerator.

2. Tip refrigerator back and screw legs in all the way to stop (they will extend 1/8" below base of refrigerator).

3. Adjust legs as needed to level refrigerator in both directions. To access legs, remove the lower front panel. Turn legs clockwise to extend legs.

Chart recorder/alarm module

The chart recorder/alarm module (when ordered) is packed in the lower drawer.

Temperature surveillance module

Follett’s all-in-one temperature alarm and chart recorder module (manufactured for Follett by Dickson) may be included with your FZR5-PL. Please refer to the Dickson instructions packed with this module for set-up and operation instructions.

Follett’s monitoring bottle and temperature probe has already been installed in the Follett FZR5-PL. Simply connect the loose end of the probe wire on the back of the unit to the surveillance module to complete the install.

A box of sixty (60) -50 to +50 7-day charts have also been included with this module. Replacement charts and pens can be ordered from Follett by calling Technical Service at 800-523-9361:

Item # 00162099 — Box of sixty (60), -50 to +50, 7-day replacement charts Item # 00162081 — Box of six (6) replacement red pens

Charts with different temperature scales are also available. Contact Dickson at www.dicksondata.com

Reversing the door swing – optional

NOTICE

When reinstalling latch and hinge screws, 242 blue Loctite* MUST be applied to screws. Torque screws to 25 in-lbs.

1. Remove screws and latch from refrigerator cabinet (Fig. 2.1).

2. Use  at screwdriver to carefully remove (do not scratch) hinge covers (Fig. 3.1).

3. Support door and remove screws attaching hinge to refrigerator cabinet (Fig. 3.2).

4. Cover hinge screw holes with screw hole plugs removed from opposite side.

5. Reverse door. Apply 242 blue Loctite to hinge screws and reinstall torqued to 25 in-lbs.

6. Reinstall latch on opposite side.

7. Remove screws and handle from door (Fig. 4.1).

8. Rotate handle (Fig. 4.2).

9. Apply 242 blue Loctite to latch screws and reinstall torqued to 25 in-lbs.

Note: See keypad lock manual for reversing a door that is equipped with a keypad lock.

Fig. 2

Fig. 3

Fig. 4

* Loctite is a registered trademark of Henkel Corporation in the United States and other countries.

Controller operation

In normal operation the controller displays cabinet temperatures in degrees C (default) or user-selected degrees F. Degrees C temperatures are displayed to 1 decimal point.

The controller is pre-programmed with a +3.5 C (+38 F) set point which provides a compressor cut-in at +3.5 C (+38 F) and cut-out at +5.0 C (+41 F).

All set points have a 1.5 C differential. The 1.5 C differential means that with a +3.5 C set point, for example, the compressor will turn off at +3.5 C (+38 F) and turn on when the cabinet temperature reaches +5 C (+41 F).

This temperature may not re ect the temperature of the blood products in the refrigerator. The temperature of the blood products will be re ected on the recorder chart and the recorder's digital temperature display. At times there may be a difference between the two displayed temperatures. Adjust the controller SET value to achieve your desired blood product temperature as displayed on your chart recorder.

Fig. 5

refrigeration system energized

°C

2.5

To display temperature cut-out

STEP INPUT DISPLAY

1 Press and release SET Current cut-out temperature will display for approximately 5 seconds. Display will return to current refrigerator temperature.

To change temperature cut-out

STEP INPUT DISPLAY

1 Press and hold SET for Current cut-out temperature displayed and °C will  ash 3 seconds

2 Press UP or DOWN arrows to New cut-out temperature displayed desired cut-out temperature

3 Press and release SET New cut-out temperature blinks three times, then current refrigerator temperature will display

Refer to the chart below for the set point for your application's required temperature range.

SET POINT DEGREES C CUT-IN DEGREES C CUT-OUT DEGREES C NORMAL DISPLAY RANGE DEGREES C

+3.5 C +5.0 C +3.5 C 1.5 to 5.0 C

Controller security

The controller panel can be locked to prevent inadvertent or intentional programming changes. In locked mode, the controller will display cabinet temperature and cut-out set point only.

To lock the controller

1. Press the UP and DOWN ARROW buttons together for 3 seconds until “PoF” displays (will  ash 3 times).

2. Programmer is now locked.

To unlock the controller

1. Press UP and DOWN ARROW buttons together for 3 seconds until “Pon” displays (will  ash 3 times).

2. Programmer is now unlocked.

Controller programmer key (optional accessory)

A controller programming key is available from Follett to provide fast and easy re-programming of factory settings. Programming key part number is 00183335.

Programming refrigerator from the programming

Fig. 6

key (download)

1. TURN OFF refrigerator.

2. Remove 6 screws from front panel to access back of controller.

3. Insert programming key into 5 PIN receptacle on controller back.

4. TURN ON refrigerator.

5. Values from key automatically download to refrigerator (“dol” message blinks followed by “end”).

Line

Comp

6 75

Supply

•

Controller programming key (accessory)

6. After 10 seconds display returns to current refrigerator temperature and controller will restart with new values.

7. TURN OFF.

8. Remove key.

9. Reinstall panel.

Note: An “Err” message displays for failed programming. Turn refrigerator OFF then ON to restart download, or remove key to abort.

Probe

••••

Operation

The temperature controller 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 reaches +1.5 C above the controller set point, the probe signals the controller to turn the refrigeration system on. The normally open controller contacts close and energize the condenser fan motor and compressor. The compressor uses a current-style starting relay and a starting capacitor to start the compressor motor.

When the cabinet interior temperature falls to the set point, the probe signals the controller to turn the refrigeration system off. The controller contacts reopen, which de-energizes the condenser fan motor and the compressor. The evaporator fan motor runs continuously.

Any accumulated frost on the evaporator coils melts during the off cycle. The condensate drains to a drain pan mounted alongside the condensing unit. The heat from the condensing unit evaporates any condensate in the drain pan.

Temperature control

The temperature control system is preset by the factory to maintain a cabinet temperature of +3.5 C to +5 C (+38 F to +41 F). If desired, the cut-out temperature can be raised as high as +6°C by following the instructions on page 5 for changing the temperature set point. The +1.5 C cut-out differential will be maintained regardless of the controller set point.

Defrosting

REF5-BB Series undercounter refrigerators do not require manual defrosting. The unit cooler defrosts automatically when the condensing unit is in the OFF cycle.

Cleaning

Use only non-chlorine-based cleaners. 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. Some environments with large amounts of dust may require more frequent cleaning.

1. Disconnect power to unit by turning switch on the lower front

panel to the OFF position, switching circuit breaker to OFF position, and removing power cord from receptacle.

2. Remove lower front panel (Fig. 7.1).

Note: Front louvered panel may be completely removed for

easier cleaning by disconnecting the controller wiring plugs from the freezer.

3. Remove drain pan (Fig. 7.2).

4. Clean drain pan with a non-abrasive, non-chlorinated all-purpose

detergent.

5. Reinstall drain pan.

6. Use a vacuum cleaner with brush attachment to clean condenser

through lower front panel and compressor motor and related parts through lower rear panel.

7. Reinstall lower front panel.

Fig. 7

Service

Easton Pennsylvania

MOTOR COMPRESSOR T

HER

MALL

Y PRO

TECTED

DESIGN PRE

SSURE HIG

H SIDE

MIN. B

RANCH CIRC

UIT AMP

ACITY

MAX. B

RANCH

CUIT FUS

E SIZE

SIN

GLE

PHASE

LOW SIDE

THE

MADE IN

S F

U L

PART NO

CHARGE

VOLTS

CORPORATION

SERIAL NO

MODEL

FULL LOAD AMPS

REF

RIGERANT

Latch adjustment

To adjust for proper latch engagement

1. Loosen striker plate mounting screws (Fig. 8.1).

2. Move striker plate up or down as required and tighten screws.

3. Test operation of latch.

To adjust for proper gasket seal

1. Loosen striker depth adjustment screw (Fig. 8.2).

2. Adjust stop in or out and tighten screws.

3. Test operation of latch.

Door gasket replacement

1. Remove existing gasket from mounting track.

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.

5. Adjust latch and or striker as necessary for proper door closure.

Fig. 8

Fig. 9

Slide-out compressor tray

Follett’s slide-out compressor tray allows technicians to partially slide the condensing unit from the refrigerator back without cutting refrigerant lines.

1. Remove rear panel (Fig. 9.1).

2. Remove two bolts securing condensing unit to refrigerator base (Fig. 9.2).

3. Gently slide condensing unit out (Fig. 9.3).

Note: Do not put undue strain on the refrigerant lines.

Removing drawers

1. Pull drawer forward to stop.

2. Lift drawer front to free front rollers from sides.

3. Still lifted, pull drawer forward to free back rollers from sides.

Removing slides

1. Push slides all the way back.

2. Swing bottom of slide away from refrigerator wall and lift slide off of rollers.

Controller replacement

RELAY

START

FAN

EVAP.

CONTROLLER

TEMPERATURE

120 VAC

COND. FAN

BLK

LOAD

COMP

OVER

CONDENSING UNIT

WHT

START

CAP.

WHT

BLK BLK

BLU

WHT

BLU

3.5

1. Disconnect power to unit. a. Push front panel rocker switch to OFF position. b. Disconnect power cord.

2. Remove 6 screws from front panel and slide panel forward to access back of controller.

3. Disconnect front panel and wiring harness from refrigerator at the 3, and 4 pin connectors to simplify replacement.

4. Push in on center of side brackets (on controller) to release and slide brackets back and off controller.

5. Push controller and wires out through front of front panel.

6. Using wiring schematic (attached to front panel and below) as a guide, remove wires one at a time from back of existing controller and connect to corresponding terminals on replacement controller.

7. Insert replacement controller back through front of panel.

8. Slide brackets onto sides of controller and push against back of front panel.

9. Reconnect 3 and 4 pin connectors of wiring harness to refrigerator.

10. Keeping wiring clear of condenser, replace front panel.

11. Restore power and test operation. Reprogram replacement controller if necessary.

Wiring diagram

Refrigeration system

The REF5-BB 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 thermostatic expansion valve and is critically charged. Access  ttings are provided for ease of service. However, the connection of refrigeration service hoses to the  ttings will almost invariably result in a signi cant change in the system charge. This change can adversely affect the performance of your refrigerator. Therefore, Follett recommends that if hoses are ever connected to the refrigeration system for service, the refrigerant should be recovered, the system evacuated, and recharged by weighing in the correct refrigerant charge.

Note: Do not charge the system by pressures.

Checking refrigeration system pressures

1. Remove the rear access panel (Fig. 9).

2. Turn the power switch to the on position.

3. Following the instructions on page 5 verify that the temperature controller is set to the original factory set point (cut-out) setting of +3.5 C (+38 F).

4. Allow the refrigerator to operate and stabilize at least 30 minutes, verifying the cut-out temperature is being reached.

5. Connect refrigerant hoses to access  ttings and measure air temperature at condenser intake grille.

6. Verify correct pressures with the temperature chart below.

7. Troubleshoot refrigeration system as needed.

Condenser inlet air temperature 70 – 100 F

Discharge pressure (psi) 190 – 210

Suction pressure (psi) 40 – 50

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

Refrigeration system diagram

COMPRESSOR

10oz. Charge

Low Psi

Vapor

EVAPORATOR FAN

EVAPORATOR

LOW SI DE

SERVICE PORT

HIGH SIDE

SERVICE PORT

High Psi

Vapor

FA N

Low Psi

Liquid

EVAPORATOR/DEFROST UNIT

HIGH PRESSURE VAPOR LOW PRESSURE VAPORHIGH PRESSURE LIQUID LOW PRESSURE LIQUID

TXV

HEAT EXCHANGE

DRYER

High Psi

Liquid

CONDENSING UNIT

Blood bank refrigerator troubleshooting guide

Before calling for service

1. Check that unit is plugged in.

2. Test outlet with another appliance to verify power.

Symptom

Refrigerator does not operate (no components run).

Compressor does not run.

Evaporator fan motor does not run.

Refrigerator does not shut off.

Refrigerator does not maintain temperature (all components run).

Possible cause

1. Power switch faulty or in OFF position; loose connection.

2. Refrigerator not plugged in.

3. No power to cord.

4. Temp controller not energizing components.

5. Probe not sensing cut in temperature.

1. Thermal overload open or defective.

2. Capacitor and/or relay defective.

3. Compressor defective.

1. Defective fan motor.

1. Controller not sensing cut off temperature.

2. Controller keeping refrigeration system energized.

1. Condenser or evaporator coil needs cleaning.

2. Faulty door gasket or hinges/latch loose

3. Excessively high ambient.

4. Refrigerant leak.

5. Incorrect refrigerant charge.

6. Plugged or defective expansion valve.

7. Inefficient compressor.

Solution

1. Turn power switch to ON position; check switch and connections.

2. Connect plug.

3. Restore power.

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

5. Replace controller and/or probe.

1. Allow to cool or replace.

2. Replace as required.

3. Replace compressor.

1. Replace fan motor.

1. Replace controller and/or probe.

2. Replace controller.

1. Clean coils as needed.

2. Replace door gasket.

3. Maximum recommended ambient is 100 degrees F.

4. Locate and repair leak.

5. Recover, evacuate and weigh in correct charge.

6. Replace expansion valve.

7. Consult technical service.

If problems persist after following this basic troubleshooting guide, call Follett’s

technical service group at (800) 523-9361 or (610) 252-7301.