Thermo Scientific Jewett JBB1204, Jewett JBB2304, Jewett JBB404, Jewett JBB5004, Jewett JBB3004 Installation And Operation Manual

Installation and Operation Manual

Thermo Scientific Jewett®
Blood Bank Refrigerators

©

2010 Thermo Fisher Scientific. All rights reserved.

®

“Suva

” is a registered trademark of DuPont.

All other trademarks are the property of Thermo Fisher Scientific Inc. and

its subsidiaries.

Thermo Scientific Jewett Blood Bank Refrigerators Installation and Operation

Table of Contents

1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

3 Unpacking and Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4 Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

4.1 Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

4.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

4.3 Leveling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

4.4 Door Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

4.4.1 Adjustable Hinged Glass Doors (Undercounter Models Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

4.5 Door Seal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

4.6 Final Checks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

5 Drawers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

5.1 Removing the Drawers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

5.2 Reinstalling the Drawers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

5.3 Changing Drawer Slide Position. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

5.4 Control Panel Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

6 Control Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

6.1 Display Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

6.2 Programming Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

6.3 Service Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

7 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

7.1 Start Up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

7.2 Product Loading Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

7.3 Automatic Defrost. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

8 Temperature Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

8.1 Setpoint Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

8.2 Sensor Bottles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6

i

Thermo Scientific Jewett Blood Bank Refrigerators Installation and Operation

9 Alarm Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

9.1 Operating the Alarm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

9.2 Local and Remote Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

9.3 Installing a Remote Alarm (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

9.4 Alarm Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

9.4.1 Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7

9.4.2 Alarm Test Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

10 Chart Recorders . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

10.1 Set Up and Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

10.2 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

10.3 Changing Chart Paper . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

10.4 Calibration Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

11 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

11.1 Cleaning the Drawers and Cabinet Interior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

11.2 Cleaning the Condenser. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9

12 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

ii

Thermo Scientific Jewett Blood Bank Refrigerators Installation and Operation

1 Introduction

Blood bank refrigerators are designed to meet strict AABB,
ANRC and FDA requirements for stored product safety.

This manual provides installation and operation instructions for:
Undercounter models (4.7 ft3), Space Saver models (11.5 ft3) and
Upright models (23.3, 29.2 and 51.1 ft
determine the specifications that apply to your unit.

The control system, standard on all models, includes:

• Key-operated power and alarm switch

• Preset temperature setpoint

• Digital temperature display with 0.1ºC resolution

• Graphic temperature display

• Audible and visual power failure indicators

• Alarm silence, ringback, and automatic reset functions

• Pushbutton alarm test

Other standard features include:

• Keyed door locks

• Remote alarm contacts

• CFC-free refrigerant

• CFC-free foamed in-place urethane insulation

• Quiet, hermetically sealed refrigeration compressors

Upright models (23.3 ft

3

and larger) also have: fully extendable
stainless steel drawers; a sensor selection button (for upper and
lower cabinet temperature readings); and an independent switch
for interior cabinet lights.

Seven day chart recorders are standard on all models.

3

). Refer to Table 1 to

2 Safety Precautions

In this manual and on labels attached to this product, the words
WARNING and CAUTION mean the following:

• WARNING: a potentially hazardous situation which, if not

avoided, could result in serious injury or death.

• CAUTION: a potentially hazardous situation which, if not

avoided, may result in minor or moderate injury or damage to
the equipment.

Before installing, using or maintaining this product, please be sure
to read this manual and product warning labels carefully. Failure to
follow these instructions may cause this product to malfunction,
which could result in injury or damage.

Below are important safety precautions that apply to this product:

• Use this product only in the way described in the product

literature and in this manual. Before using it, verify that this
product is suitable for its intended use.

• Do not modify system components, especially the controller.

Use OEM exact replacement equipment or parts. Before use,
confirm that the product has not been altered in any way.

• Your unit must be properly grounded in conformity with

national and local electrical codes. Never connect the unit to
overloaded power sources.

• Disconnect the unit from all power sources before cleaning,

troubleshooting, or performing other maintenance on the
product or its controls.

Table 1. Blood Bank Refrigerator Specifications

Model

JBB404

JBB1204

JBB2304

JBB3004

JBB5004

a

Vol ta ge

Code

V, W 6.0/15

V, W 6.0/15

V, W 6.0/15

V, W 6.0/15

V, W 8.5/15

A = 115V, 60Hz; D = 208/230V, 60Hz; V = 220V, 50Hz; W = 240V, 50 Hz

Amps/

a

Breaker

A6.0/15

D6.0/15

A9.4/15

D6.0/15

A9.4/15

D6.0/15

A9.4/15

D6.0/15

A 15.0/20

D8.5/15

Cu. Ft./

Liters

4.7/

11.5 /
326

23.3
659

29.2/
826

51.1/

1447

Undercounter

Space Saver

Cabinet Door

Single

solid

Single

hinged

glass

Upright

Upright

Upright

Single

hinged

glass

Single

hinged

glass

Double
hinged

glass

Drawers/

450ml

bags

2/48

5/165

6/360

6/462

12/7 20

Dimensions H x F-B x W in. (cm) Net

Interior Exterior

20 x 20.5 x 20

(50.8 x 52 x 50.8)

52.4 x 21.75 x 20

(133.2 x 55.2 x 50.8)

58 x 29 x 24

(147.3 x 73.7 x 61.0)

58 x 29 x 30

(147.3 x 73.7 x 76.2)

58 x 29 x 52.5

(147.3 x 73.7 x 133.4)

34 x 26 x 24

(86.2 x 66 x 61)

71.9 x 28.75 x 24
(182.6 x 73 x 61)

77.5 x 36.2 x 28

(196.9 x 92.0 x 71.1)

77.5 x 36.2 x 34

(196.9 x 92.0 x 86.4)

77.5 x 36.2 x 56.5

(196.9 x 92.0 x 143.5)

Prod. Wt.

lbs (kg)

200
(91)

320

(146)

425

(193)

500

(227)

640

(290)

1

Thermo Scientific Jewett Blood Bank Refrigerators Installation and Operation

3 Unpacking and Inspection

At delivery, examine the exterior for physical damage while the
carrier’s representative is present. If exterior damage is present,
carefully unpack and inspect the unit and all accessories for
damage.

If there is no exterior damage, unpack and inspect the equipment
within five days of delivery. If you find any damage, keep the
packing materials and immediately report the damage to the
carrier. Do not return goods without written authorization.
When submitting a claim for shipping damage, request that the
carrier inspect the shipping container and equipment.

4 Installation

4.1 Location

Install the unit in a level area free from vibration with a minimum
of 6 inches of space on the sides and rear and 12 inches at the top.

Do not position the equipment in direct sunlight or near heating
diffusers, radiators, or other sources of heat. The ambient
temperature range at the location must be 59 to 90°F
(15to32°C).

4.2 Wiring

CAUTION! Connect the equipment to a separate,
dedicated, power source with the correct voltage.
Power fluctuations or incorrect voltage can result in
severe damage to the equipment.

4.3 Leveling

The unit must be level. Rotate the leveling screws, located under
the front corners of the unit, until the unit is level. If the floor is
seriously out of level, you may need to shim the corners with thin
sheets of metal.

Note: Use thin sheets of metal to level units equipped with

optional casters.

4.4 Door Operation

Standard glass doors for models larger than the undercounter
model stay open if opened 90 degrees. Door spring tension
cannot be adjusted.

If the self-closing doors do not work properly, make sure the unit
is level.

4.4.1 Adjustable Hinged Glass Doors (Undercounter
Models Only)

On Undercounter models with hinged glass doors, you can use a
regular screwdriver to adjust spring tension and center each door
on its frame. The adjustment screws (“torque” for tension and
“sag” for door placement) are located on the bottom hinge
bracket (shown below in Figure 1).

Hinged glass doors can be propped open with metal braces at the
bottom hinges. Open the door 90 degrees or until you feel some
resistance. Push the door open past the resistance and the metal
braces engage. To close the door, push it toward the unit (past the
resistance).

DANGER! For personal safety and trouble-free
operation, this unit must be properly grounded before
it is used. Failure to ground the equipment may cause
personal injury or damage to the equipment. Always
conform to the National Electrical Code and local
codes. Do not connect unit to already overloaded
power lines.

Always connect the equipment to a dedicated (separate) circuit.
Electrical codes require fuse or circuit breaker protection for
branch circuit conductors. Use time delay fuses for #12 AWG
circuits.

For all blood bank models, the wiring diagram is attached to the
back of the cabinet.

To rq u e

Sag

Figure 1. Undercounter Hinge Bracket for Glass Door

Adjustments

CAUTION! Do not overtighten the tension as
damage to the equipment can result.

WARNING! Disconnect equipment from main power
before attempting any maintenance to equipment or its
controls.

2

Thermo Scientific Jewett Blood Bank Refrigerators Installation and Operation

4.5 Door Seal

To check the door seal, complete the following steps:

1. Open the door.

2. Insert a strip of paper (a couple of inches wide) between the
door gasket and the cabinet flange and close the door.

3. Slowly pull the paper strip from the outside. You should feel
some resistance.

4. Repeat this test at 4-inch intervals around the door. If the
door does not seal properly, you need to either replace the
gasket, or adjust the door (see the previous page).

CAUTION! Door seal integrity is critical for blood
bank refrigerators. A loose fitting gasket allows moist
air to be drawn into the cabinet, resulting in quicker
frost buildup on the evaporator coil, longer running
time, poor temperature maintenance, and increased
operation cost.

The door seals on 12 ft3 models can be adjusted. To correct a
faulty seal on these units, complete the following steps:

1. Open the door completely.

2. Remove the hinge pin cover to expose the door mounting
screws. This cover pops off.

3. Loosen the screws and move the door side of the hinge to
decrease the clearance between the gasket and the cabinet.

4. Tighten the screws and snap the hinge pin covers on.

5. Recheck the seal.

6. If the door does not seal properly, replace the gasket.

4.6 Final Checks

Before start up, complete the following steps:

1. Make sure that the unit is free of all wood or cardboard
shipping materials, both inside and outside.

2. Check the positions of the stainless steel drawers. If you
want to adjust the drawer slides in an Upright unit, follow the
instructions in Section 5.3.

3. Verify that the unit is connected to a dedicated circuit.

Figure 2. Drawer Removal (Upright Models)

5.2 Reinstalling the Drawers

To reinstall the drawers in Upright models, complete the
following steps (refer to Figure 2):

1. Pull both drawer slides toward you until the slides are fully
extended.

2. Position the drawer between the slides and insert the front
mounting clips into the slots on front of the slides.

3. Push the back of the drawer down between the slides and
insert the drawer tabs into the back slots.

Note: The drawers fit snugly between the slides. Push on the

back of the drawer from the inside to insert the drawer
tabs completely into the slots. Make sure both drawer
tabs are aligned with the slots on the slides before
pushing the drawer down between the slides.

5.3 Changing Drawer Slide Position

The drawer slides are adjustable. You can position these slides in

Ta bs

Drawer slide

Slot

the vertical slots which are spaced at one-inch intervals.

5Drawers

Drawer slides have a small wire safety clip at the front pilaster
which prevents the slides from falling when the drawers are

5.1 Removing the Drawers

To remove the drawers in Upright models (23 ft

3

and larger)

complete the following steps (refer to Figure 2):

1. Pull the drawer toward you until the slides are fully extended.

2. Lift the back of the drawer to disengage the mounting tabs
from the slots on the slides.

Note: The drawers fit snugly between the slides. Push the back

of the drawer from underneath to remove the drawer.

3. Raise the back of the drawer almost to a vertical position and
disengage the front mounting clips from the slides.

removed. To change the position of the drawer slides, complete
the following steps:

1. Locate the safety clip.

2. Slip your fingernail or a small screwdriver under the bottom
of the wire clip and pry the clip out toward the inside of the
refrigerator.

3. Lift up the slide at the front. The slide is free to move from
the front pilaster.

4. The drawer slide must be removed from the rear pilaster at
approximately a 45 degree angle toward the center of the
cabinet.

5. Pull the slide toward the front of the cabinet.

To remove the drawers on Space Saver models, depress the
hooks located on both sides of the drawers (about 1/3 of the way
back) and slide the drawers up and out.

CAUTION! Drawer slides do not require lubrication.
Additional lubricant could impede movement of the
drawers when the lubricant is cold.

3

Thermo Scientific Jewett Blood Bank Refrigerators Installation and Operation

6 Control Panel

1

3

4 5

9

2

Key Switch

6.1 Control Panel Features

The control panel is located on the top right side of your blood
bank refrigerator. You can use the three pushbuttons (#5, #8, and
#9 in Figure 3) to change the temperature display (#1) or to
adjust temperature and alarm setpoints. The thermometer display
(#2) provides a quick visual indicator of current cabinet
temperature and alarm conditions.

Before starting up your refrigerator, take some time to review the
control panel functions:

1. Main temperature display — during normal operation, shows
cabinet temperature in degrees Celsius, as measured by the
upper sensor inside the cabinet. You can use the buttons to
display other values such as setpoints, extreme values, and
lower sensor temperature. The number in the main display
flashes when the value can be modified.

2. Thermometer — shows cabinet temperature and alarm
conditions. There are 10 horizontal bars: 9 are displayed
during normal operation, the tenth (top) bar indicates a warm
alarm condition. The number of bars illuminated indicates
approximate cabinet temperature. Depending on alarm
settings, 4 or 5 bars illuminated indicate that the cabinet is at
setpoint.

For example, suppose that the cabinet temperature setpoint is
+4ºC and that the warm and cold alarm setpoints are 8ºC and
0ºC. Then the number of bars illuminated indicates cabinet
temperature as follows:

bulb only 0ºC (cold alarm) 6 bars 4.8
1 bar 0.8 7 bars 5.6
2 bars 1.6 8 bars 6.4
3 bars 2.4 9 bars 7.2
4 bars 3.2 10 bars 8 (warm alarm)
5 bars 4 (setpoint)

6

7

8

When cabinet temperature exceeds the warm alarm setpoint,
the top bar of the thermometer flashes. When temperature is
lower than the cold alarm setpoint, the bulb flashes.

When you are in programming mode (described in Table 2)
the thermometer shows the setpoint value you are changing.

3. Power failure — illuminated when the main power supply is
interrupted. In this case the audible alarm also sounds.

4. Service required —illuminated when the controller is in
service programming mode or when simulated warm or cold
alarm conditions are failing to occur during an alarm test.

5. Increase — pushbutton used to increase setpoint values in
programming mode and for various display functions.

6. Door ajar — illuminated when the refrigerator door is open
and the alarm is activated (key switch turned to the alarm
position). (This feature is not available for 45 ft
door models.)

7. Battery low — illuminated when the backup battery is low.

8. Decrease — pushbutton used to decrease setpoint values in
programming mode and for various display functions.

9. Scan — pushbutton used to change the main display and for
various other functions.

10. Audible alarm — illuminates during warm and cold alarm
conditions.

For full descriptions of display, programming, and service
functions, refer to Tables 2, 3, and 4 on page 5.

10

3

sliding glass

4

Thermo Scientific Jewett Blood Bank Refrigerators Installation and Operation

6.2 Display Functions

Table 2. Control Panel Display Functions

Function Meaning Sequence Display

Normal operation

Cold excursion

Warm excursion

Mute Silence audible alarm Press

Reset

Alarm test

Lower sensor Display lower cabinet temperature

Default display while refrigerator
is running

Show coldest cabinet temperature
since last startup or reset

Show warmest cabinet temperature
since last startup or reset

Return to default display after
excursion or alarm condition

Test by simulating warm alarm
conditions; key switch must be in
alarm mode

—

Press Display shows cold excursion while button is pressed.

Press Display shows warm excursion while button is pressed.

Press and
simultaneously, hold
for five seconds

Press and
simultaneously

Press and
simultaneously and
hold

Scan

Scan

Scan

Temperature display and thermometer show cabinet
temperature.

Display and thermometer show cabinet temperature,
alarm icon continues to flash.

Excursion values are reset; temperature display shows
cabinet temperature.

Display and thermometer show simulated cabinet
temperature, alarms flash and sound as appropriate.
Alarms clear when test is completed.

Display shows lower cabinet temperature while buttons
are held, returns to upper cabinet temperature when
buttons are released. ERR is displayed if no lower sensor
probe is detected.

6.3 Programming Functions

You can enter programming mode by pressing and holding for 5 seconds. Pressing repeatedly scrolls through the available setpoint
functions: cold alarm and warm alarm.

Table 3. Setpoint Programming Functions

Function Programming Sequence

Adjust cold alarm setpoint

Adjust warm alarm setpoint

Enter programming mode by pressing
value flashes in the temperature display; use and to adjust it. The display automatically returns to normal operating
mode 30 seconds after the last key entry or after scrolling through both available functions.

Enter programming mode and press
alarm setpoint value then flashes in the temperature display; use and to adjust it. The display automatically returns
to normal operating mode 30 seconds after the last key entry or after scrolling through both available functions.

Mute and holding for 5 seconds. On release, the current cold alarm setpoint

Scan repeatedly until the top of the thermometer is illuminated. The current warm

6.4 Service Parameters

When the key switch is not turned to third (alarm) position, you can access service parameters by entering programming mode and
pressing
wrench icon illuminated. Then the firmware checksum (read-only) will be displayed for about 4 seconds. Pressing

Scan for an additional 5 seconds. On release of the button, the display will go blank, then display “SEr” with the service

Scan repeatedly

scrolls through the available service functions. While you are in service mode, the wrench icon is illuminated. For any flashing
parameter you can use

CAUTION! Resetting any of the following parameter values could adversely affect the performance of your blood bank
refrigerator. These settings very rarely need to be changed for normal +4
making any adjustments to service parameter values.

Table 4. Service Parameters

Parameter Notes Parameter Notes

1. Offset Center air temperature calibration. Default value is 0. 6. Defrost Termination

2. Cut On

3. Differential

4. Defrost Interval Range 1 to 12 hours; default value is 1.

5. Defrost Duration Range 5 to 30 minutes; default value is 15.

and to adjust the value.

Cabinet temperature at which compressor starts to
cool down to setpoint. Default value is 6ºC.

Cut On – differential = temperature at which
compressor stops after achieving cabinet temperature
setpoint. Default value is 3.

ºC operation. Be sure to call Technical Service before

Temperature at evaporator at which defrost
cycle terminates; default value is 4ºC.

7. Short Cycle Delay Range 0 to 15 minutes; default value is 0.

8. Control Probe
Temperature

9. Defrost Probe

Temperature

Display only.

Display only.

5

Thermo Scientific Jewett Blood Bank Refrigerators Installation and Operation

7 Operation

7. 1 S t a r t U p

To start up the refrigerator, complete the following steps:

1. Plug in the power cord.

2. Insert the key in the switch and turn the power on.The display
will show the actual cabinet temperature.

3. Rotate the power switch to the ALARM ON position when
the temperature drops below the warm alarm setpoint.

4. Allow the unit to reach operating temperature before loading
it with any product. To stabilize the temperature profile,
a 24-hour waiting period is recommended.

5. After the unit has pulled down to the desired operating
temperature, turn the three position key switch one turn
further clockwise to the Alarm On position.

6. If you have a remote alarm, hook it up at this point (refer to
Section 9.3 on page 7).

7. Whether you have a built-in alarm or a customer-installed
remote alarm, you should test it following the instructions in
Section 9.4 on page 7. Alarm setpoints are factory pre-set for

5.5°C (warm) and 1.5°C (cold).

7.2 Product Loading Guidelines

When loading your blood bank refrigerator, take care to observe
the following guidelines:

• Never load the blood bank beyond capacity. Table 1 on

page 1 shows the number of 450ml bags that can safely be
stored in your unit.

• Distribute the load as evenly as possible. Temperature

uniformity depends on air circulation, which could be
impeded if drawers are overfilled, particularly at the top of
the cabinet.

• For critical applications such as blood storage, be sure that

the alarm systems are working and active before you load
any product.

8 Temperature Control

8.1 Setpoint Control

Your individual unit has been adjusted and factory tested to
maintain a +4°C cabinet temperature. For most blood bank
applications, you will not need to change the temperature
setpoint.

Cabinet temperature setpoint is a computed value based on the
service parameters Cut On and Differential. To adjust the
setpoint:

1. Be sure that the key switch is not turned to the third (alarm)
position. In order to protect the contents of the blood bank,
access to service parameters is disabled when the unit is in
alarm mode.

2. Access the service parameters as shown in Table 4 on page 5.

3. Adjust the values of Cut On and Differential as needed.

8.2 Sensor Bottles

Cabinet temperature is measured by probes inserted in sensor
bottles. The bottles contain equal portions of glycerine and water
to simulate blood samples. Keep the sensor bottles completely
full up to the top of the bottle.

Space Saver models have one factory-installed sensor bottle. In
Upright models (23 ft
positioned as shown in Figure 4.

3

and larger) there are two sensor bottles,

7.3 Automatic Defrost

The defrosting process on all models is primarily accomplished
by air circulated during off-cycle periods.

Under normal conditions, the temperature warm-up during
defrost is virtually unnoticeable. However, an occasional 2°C
warm-up is possible if usage is heavy and ambient conditions are
extreme.

Figure 4. Sensor Bottles (Upright Models)

The default sensor reading for Upright units is the bottle at the
top of the cabinet. You can check the temperature in the lower
sensor bottle by pressing and holding and

Scan

simultaneously (refer to Figure 3 on page 4). When you release
the buttons, the temperature display returns to the upper sensor
reading.

6

Thermo Scientific Jewett Blood Bank Refrigerators Installation and Operation

9 Alarm Systems

9.1 Operating the Alarm

The alarm system is designed to provide visual and audible
warning signals for both power failure and rise in temperature.
The alarm is equipped with a battery backup.

The factory default warm alarm setpoint is 5.5ºC; the default cold
alarm setpoint is 1.5ºC.

The alarm system is activated only when the key switch is turned
to the Alarm On position. The audible warning signal sounds
when there is a power failure or temperature alarm condition, or
when the door is ajar for more than 3 minutes.

The Mute function (pressing the
off the audio warning without turning off the visual indicators.

To turn off and reset flashing visual alarms, press and
simultaneously.

There is also a ringback function after approximately 6 minutes if
any alarm condition remains active.

9.2 Local and Remote Alarms

Blood bank units can have either a factory-installed local alarm
or an optional user-installed remote alarm. Operating and testing
procedures are the same for both types of alarm.

The maximum distance between a blood bank and a remote
alarm depends on the wire gauge used. Refer to Table 5 below.

Table 5. Wire Gauges and Distance to Remote Alarm

Wire Gauge

20 530 265

18 840 420

16 1,330 665

14 2,120 1,060

12 3,370 1,685

9.3 Installing a Remote Alarm (Optional)

Remote alarm terminals are located at the rear of the machine
compartment. The terminals are: Common, Open on Fail
(Normally Closed), and Close on Fail (Normally Open).

1. The remote alarm system has two keyhole slots on the back
to hang the alarm system on the wall. Insert two screws, no
longer than a #12 truss-head type and spaced two inches
apart, into a wall and mount the alarm.

2. Make the following connections:
a. Connect the common terminal on the cabinet switch to

the purple wire on the alarm.

b. Connect the normally closed terminal on the cabinet to

the black (“open on fail”) wire on the alarm. This
connection gives an alarm when the switch contacts open.

3. Plug the alarm system service cord into an electrical outlet.
This alarm is designed for 115V/60 Hz, 115V/50 Hz, or
100V/50 Hz operation.

Scan button) allows you to turn

Total Wire Length

(feet)

Distance to Alarm

1/2 Wire Length

(feet)

Note: If you want the alarm signal to sound when the switch

contacts close, connect the normally open terminal on
the cabinet to the red/white (“close on fail”) wire on the
alarm. The purple and red/white wires must be tied
together in this application.

The wiring diagram is attached to the inside of the alarm back
cover.

9.4 Alarm Test

Note: It is important to test your alarm system after any

maintenance operation or temperature control
adjustment.

9.4.1 Theory of Operation

This test procedure applies to both factory-installed built-in
alarms and optional field-installed remote alarms.

During the alarm test, the temperature sensor is artificially heated
and cooled by a tiny, built-in thermoelectric heating and cooling
unit which simulates both warm and cold conditions. The
electronic control module notes the sensor temperature changes
and the control panel displays these changes.

While this alarm testing procedure is very accurate and reliable,
the temperature of the refrigerated space does not change during
the alarm test.

9.4.2 Alarm Test Procedure

Note: This test automatically advances through all steps and

stops.

1. Verify that the key position is in the alarm mode, and that the
current warm and cold alarm setpoints are within normal
ranges (the warm and cold simulations may not work if the
setpoints are set to extreme values).

2. To start the alarm test, press and

Scan simultaneously.

During the test the main display and thermometer bulb will
indicate simulated (not actual) cabinet temperature.

3. When simulated temperature exceeds the warm alarm
setpoint, the alarm sounds and the alarm icon on the control
panel illuminates (#10 in Figure 3 on page 4).

4. The temperature display begins to drop. After a few seconds,
the temperature in the display is back in the operating range.

5. The alarm stops. The temperature on the display drops until
the cold alarm sounds.

6. The test is now complete but the alarm continues to sound
until the temperature on the display is back in the operating
range.

If the simulated alarm conditions do not occur during the first 5
minutes of the alarm test, the service (wrench) icon illuminates
and the test is terminated. You can also terminate the test
immediately by turning the key switch to the second (non-alarm)
position. When during the alarm test, the temperature display
does not change or the service icon illuminates, check the sensor
connections.

After an alarm test has terminated, there is a 10-minute delay
before the test can be run again.

7

Thermo Scientific Jewett Blood Bank Refrigerators Installation and Operation

10 Chart Recorders

Panel-mounted six inch recorders are standard and factory­installed on all models except for undercounter models, for
which free-standing recorders are available as options.

Recorder operation begins when the system is powered on.

10.1 Set Up and Operation

To prepare the recorder to function properly, complete the
following steps:

1. Open the recorder door to access the recorder.

2. Connect the nine volt DC battery located at the recorder’s
upper right corner. This battery provides back-up power.

3. Install clean chart paper (refer to Section 10.3 below).

4. Remove the plastic cap from the pen stylus and close the
recorder door.

Note: The recorder may not respond until the system reaches

temperatures within the recorder’s range.

9 Volt Battery

Chart Buttons

Imprinting

Sty lus

Reference Mark

Hub-Nut and

Retaining Wire

Figure 5. Six Inch Chart Recorder

Chart

10.2 Power S upply

The recorder normally uses AC power when the system is
operating. If AC power fails, the LED indicator flashes to alert
you to a power failure. The recorder continues sensing cabinet
temperature and the chart continues turning for approximately
24 hours with back-up power provided by the nine-volt battery.

The LED indicator glows continuously when main power is
functioning and the battery is charged.

When the battery is low, the LED flashes to indicate that the
battery needs to be changed.

10.3 Changing Chart Paper

To change the chart paper, complete the following steps:

1. Locate the pressure sensitive buttons at the front, upper left
of the recorder panel.

2. Press and hold the change chart button for one second. The
pen will move off the scale.

3. Unscrew the center nut, remove the old chart paper, and
install new chart paper. Carefully align the day and time with
the reference mark on the recorder panel (a small groove on
the left side of the panel, shown in Figure 5).

4. Replace the center nut and hand tighten. Press the change
chart button again to resume temperature recording.

10.4 Calibration Adjustment

This recorder has been accurately calibrated at the factory and
retains calibration even during power interruptions. If required,
however, adjustments can be made as follows:

1. Run the unit continuously at the control setpoint temperature.
Continue steady operation for at least two hours to provide
adequate time for recorder response.

2. Measure cabinet center solution temperature with a
calibrated temperature monitor. (Solution temperature is
measured inside the sensor bottles — see Section 8.2.)

3. Compare the recorder temperature to the solution
temperature. If necessary, adjust recorder by pressing the left
(#1) and right (#2) chart buttons.

Note: The stylus does not begin to move until the button is held

for five seconds.

CHANGE CHART

3

1

Figure 6. Chart Buttons

2

8

Thermo Scientific Jewett Blood Bank Refrigerators Installation and Operation

11 Cleaning

11.1 Cleaning the Drawers and Cabinet Interior

To clean the drawers and cabinet interior, remove the drawers
following the instructions in Section 5. Use a solution of water
and a mild detergent. Rinse the drawers and wipe them dry with a
soft cloth.

11.2 Cleaning the Condenser

WARNING! Disconnect equipment from main
power before attempting any maintenance to
equipment or its controls.

CAUTION! Condensers should be cleaned at least
every six months. In heavy traffic areas, condensers
load with dirt more quickly. Failure to keep the
condenser clean can result in equipment warm-up or
erratic temperatures.

CAUTION! Never clean near condensers with your
fingers. Some surfaces are sharp.

Periodically check the condenser to make sure that it is clean.

In all models, the condenser is located in the top machine
compartment. To clean the condenser:

1. Disconnect the power.

2. Remove the top grill.

3. Use a vacuum cleaner with hose and brush attachments to
clean the front face of the finned surface.

4. Clean up any loose dust and replace the grill.

5. Reconnect the power.

9

Thermo Scientific Jewett Blood Bank Refrigerators Installation and Operation

12 Troubleshooting

WARNING! Troubleshooting procedures involve working with high voltages which can cause injury or death. Troubleshooting
should only be performed by trained personnel.

This section is a guide to troubleshooting equipment problems.

Table 6. Troubleshooting Procedures

Problem Cause Solution

Unit does not operate
or Power Failure
Indicator is on.

Temperature
fluctuates.

Unit warms up.

Power supply

Cold control Make sure that the cold control is set correctly. Refer to Section 8 on page 6.

Condenser Make sure the condenser is clean. Refer to Section 11.2 on page 9.

Other causes

Door is open Make sure the door is completely closed.

Door seal Check the door seal, following instructions in Section 4.5 on page 3.

Warm product recently
loaded in unit

Power supply Check for proper voltage to the unit. If there is no voltage to the unit, call an electrician.

Compressor

1. Check that the cord is securely plugged in.

2. Plug another appliance into the outlet to see if it is live.

3. Test the voltage and verify that it is correct for your unit (refer to Table 1 on page 1).

4. If the outlet is dead, check the circuit breaker or fuses.

If the cold control is set correctly, the condenser is clean, but temperature continues to fluctuate, call
an authorized service representative.

Allow ample time to recover from loading warm product.

1. If the compressor is not running and the power failure alarm light is on, have an electrician
check for proper voltage to the unit.

2. If the compressor is not running and the power failure alarm light is off, call the technical
support hot line.

3. If the compressor is running, open the door and look through the slotted air intake in the bottom
of the evaporator cover to see if icing is present on the evaporator. If icing is present and there
is no air flow behind evaporator, call technical service for assistance. The evaporator fans may
be inoperative.

4. If the compressor is running and there is airflow behind the evaporator, contact an authorized
service provider or call the technical support hot line for assistance.

10

Thermo Scientific Jewett Blood Bank Refrigerators Installation and Operation

WEEE Compliance

WEEE Compliance. This product is required to comply with the European

Union’s Waste Electrical & Electronic Equipment (WEEE) Directive 2002/96EC.
It is marked with the following symbol. Thermo Fisher Scientific has contracted
with one or more recycling/disposal companies in each EU Member State, and this
product should be disposed of or recycled through them. Further information on
our compliance with these Directives, the recyclers in your country, and
information on Thermo Scientific products which may assist the detection of
substances subject to the RoHS Directive are available at www.thermo.com/

WEEE Konformittät. Dieses Produkt muss die EU Waste Electrical & Electronic

Equipment (WEEE) Richtlinie 2002/96EC erfüllen. Das Produkt ist durch
folgendes Symbol gekennzeichnet. Thermo Fisher Scientific hat Vereinbarungen
getroffen mit Verwertungs-/Entsorgungsanlagen in allen EU-Mitgliederstaaten
und dieses Produkt muss durch diese Firmen widerverwetet oder entsorgt werden.
Mehr Informationen über die Einhaltung dieser Anweisungen durch Thermo
Scientific, dieVerwerter und Hinweise die Ihnen nützlich sein können, die Thermo
Fisher Scientific Produkte zu identizfizieren, die unter diese RoHS.
Anweisungfallen, finden Sie unter www.thermo.com/

Conformità WEEE. Questo prodotto deve rispondere alla direttiva dell’ Unione

Europea 2002/96EC in merito ai Rifiuti degli Apparecchi Elettrici ed Elettronici
(WEEE). È marcato col seguente simbolo.Thermo Fischer Scientific ha stipulato
contratti con una o diverse società di riciclaggio/smaltimento in ognuno degli Stati
Membri Europei. Questo prodotto verrà smaltito o riciclato tramite queste
medesime. Ulteriori informazioni sulla conformità di Thermo Fisher Scientific
con queste Direttive, l’elenco delle ditte di riciclaggio nel Vostro paese e
informazioni sui prodotti Thermo Scientific che possono essere utili alla
rilevazione di sostanze soggette alla Direttiva RoHS sono disponibili sul sito

www.thermo.com/

Great Britain

Deutschland

Italia

Conformité WEEE. Ce produit doit être conforme à la directive euro-péenne

(2002/96EC) des Déchets d’Equipements Electriques et Electroniques (DEEE). Il
est marqué par le symbole suivant. Thermo Fisher Scientific s’est associé avec une
ou plusieurs compagnies de recyclage dans chaque état membre de l’union
européenne et ce produit devraitêtre collecté ou recyclé par celles-ci. Davantage
d’informations sur laconformité de Thermo Fisher Scientific à ces directives, les
recycleurs dans votre pays et les informations sur les produits Thermo Fisher
Scientific qui peuvent aider le détection des substances sujettes à la directive
RoHS sont disponibles sur www.thermo.com/

France

12

Important

For your future reference and when contacting the factory, please have the
following information readily available:

Model Number:

Serial Number:

Date Purchased:

The above information can be found on the dataplate attached to the
equipment. If available, please provide the date purchased, the source of
purchase (manufacturer or specific agent/rep organization), and purchase
order number.

IF YOU NEED ASSISTANCE:

SALES DIVISION

Phone: [phone] (866-9-THERMO)

LABORATORY PARTS and SERVICE

Phone: [phone]

TECHNICAL SUPPORT

Phone: [phone]

Thermo Fisher Scientific Inc.

275 Aiken Road
Asheville, NC 28804
United States

www.thermofisher.com

34830H54 Rev. A