Phcbi MBR-705GR User manual

MBR-705GR
Please read the operating instructions carefully before using this product, and keep the operating
instructions for future use.
See page 35 for model number.
Operating Instructions
Blood Bank Refrigerator

2
CONTENTS
INTRODUCTION ································································· 3
PRECAUTIONS FOR SAFE OPERATION································· 4
LABELS ON UNIT································································ 9
SYMBOLS ON UNIT····························································· 9
ENVIRONMENTAL CONDITIONS ··········································· 9
REFRIGERATOR COMPONENTS
Refrigerator unit ······························································ 10
Control panel ·································································· 12
Inside of front cover ························································· 13
Back of the unit ······························································· 13
INSTALLATION SITE ··························································· 14
INSTALLATION ··································································· 15
PREPARATION OF MONITOR BOTTLE··································· 16
START-UP OF UNIT ···························································· 17
PLACEMENT OF STORED ITEMS·········································· 18
DISPLAY OF CHAMBER TEMPERATURE································ 19
DEFROSTING OF EVAPORATOR ·········································· 19
REMOTE ALARM TERMINAL ················································ 20
TEMPERATURE RECORDER
Recorder unit·································································· 21
Loading the pen cartridge·················································· 22
Setting the start time ························································ 23
Replacing the recording chart············································· 23
ALARM FUNCTIONS···························································· 24
SELF-DIAGNOSTIC FUNCTIONS ··········································· 25
ROUTINE MAINTENANCE
Cleaning of exterior, interior, and accessories ························ 26
Checking of alarm operation ·············································· 26
Cleaning of evaporating tray ·············································· 27
Replacement of fluorescent lamp ········································ 27
Replacement of glow starter··············································· 28
CALIBRATION ···································································· 28
REPLACEMENT OF BATTERY ·············································· 28
TROUBLESHOOTING ·························································· 29
DISPOSAL OF UNIT
Recycle of battery···························································· 30
Decontamination of unit ···················································· 30
SPECIFICATIONS ······························································· 35
PERFORMANCE ································································· 35
SAFETY CHECK SHEET······················································· 36

3
INTRODUCTION
Read the operating instructions carefully before using the product and follow the instructions for safe
operation.
PHC Corporation takes no responsibility for safety if the product is not used as intended or is used with
any procedures other than those given in the operating instructions.
Keep the operating instructions in a suitable place so that they can be referred to as necessary.
The operating instructions are subject to change without notice for improvement of performance or
function.
Contact our sales representative or agent if any page of the operating instructions is lost or the page
order is incorrect, or if the instructions are unclear or inaccurate.
No part of the operating instructions may be reproduced in any form without the express written
permission of PHC Corporation.
IMPORTANT NOTICE
PHC Corporation guarantees this product under certain warranty conditions. However, please note that
PHC Corporation shall not be responsible for any loss or damage to the contents of the product.
<Intended Use>
This equipment is designed for storage of blood and blood products.
<Proposal for safe storage of refrigerator contents>
A remote alarm system can be provided with the refrigerator to protect the blood against accidental rises
in temperature. Contact our sales representative or agent for details of the systems or to arrange
installation.

4
PRECAUTIONS FOR SAFE OPERATION
It is imperative that the user complies with the operating instructions
as they contain important safety advice.
Items and procedures are described so that you can use this unit correctly and safely.
Following these precautions will prevent possible injury to the user and any other
person.
Precautions are illustrated in the following way:
WARNING
Warning indicates a potentially hazardous situation which, if not avoided,
could result in serious injury or death.
CAUTION
Failure to observe CAUTION signs could result in injury to personnel and
damage to the unit and associated property.
Symbols have the following meanings:
This symbol means caution.
This symbol means an action is prohibited.
This symbol means an instruction must be followed.
Be sure to keep the operating instructions in a place that is accessible to users of this
unit.

5
PRECAUTIONS FOR SAFE OPERATION
Do not use the unit outdoors. Exposure to rain may cause leakage and/or electric shock.
Only qualified engineers or service personnel should install the unit. Installation by unqualified
personnel may cause water leakage, electric shock, or fire.
Install the unit in a location capable of bearing the total combined weight (product + optional
accessories + stored items). After installing the unit, be absolutely sure to take precautions
to prevent the unit from falling over. If the unit is installed in a location which is not strong enough
or if the proper precautions are not taken, the unit may fall over and cause injuries.
Do not install the unit where there are high levels of moisture or where it may be splashed with
water. Installing the unit where there are high levels of moisture or where it may be splashed with
water may cause the insulation to deteriorate and give rise to leakage and/or electric shock.
Do not install the unit in a location where flammable or volatile substances are present.
Installing the unit in a location where flammable or volatile substances are present may cause
explosions and/or a fire.
Do not install the unit in a location where corrosive gases such as acids are present. Installing
the unit in a location where corrosive substances are present may cause electric components to
corrode, leading to leakage and/or electric shock due to the deterioration of insulation resulting from
corroded electrical components.
Do not place this unit in a location where it is difficult to disconnect the power supply plug.
Failure to disconnect the power supply plug may cause fire in the event of a problem or malfunction.
Be absolutely sure to earth (gound) the unit in order to prevent electric shock. Failure to earth
the product may give rise to electric shock. If necessary, ask a qualified contractor to do this work.
Do not connect the earth wire to a gas pipe, water pipe, or lightning rod when earthing
the unit. Earthing the unit improperly may give rise to electric shock.
Connect the unit to a power source as indicated on the rating label attached to the unit. Use
of any other voltage or frequency other than that on the rating label may cause fire or electric shock.
Never store volatile or flammable substances in this unit except in a sealed container. Such
substances may cause explosion or fire if they leak.
Never insert metal objects such as pins and wires into any vent, gap, or outlet on the unit.
This may cause electric shock or injury by accidental contact with moving parts.
WARNING

6
PRECAUTIONS FOR SAFE OPERATION
When handling harmful samples (for example, those which consist of toxic, pathogenic, or
radioactive substances), install the unit inside a designated isolation facility. If the unit is
installed in a location which is not an isolation facility, there may be detrimental effects on both people
and the natural environment.
Before proceeding with maintenance or checking of the unit, set the power switch to OFF and
disconnect the power supply plug. Performing the work while power is still flowing to the product
or while the power supply plug is still connected may give rise to electric shock and/or injury.
Do not touch any electrical parts (such as power supply plug) or operate switches with a wet
hand. This may cause electric shock.
Wear protective gloves and mask during maintenance. Touching or inhaling chemicals or
aerosols from around the unit may be detrimental to health.
Never splash water directly onto the unit as this may cause electric shock or short circuit.
Never put containers with liquid on top of the unit as this may cause electric shock or short circuit
if the liquid is spilled.
Never damage the power supply cord or power supply plug (by breaking, adapting, placing
near a source of heat, bending with force, twisting, pulling, adding weight, or binding). A
damaged power supply cord or power supply plug may cause electric shock, short circuit, or fire.
Never disassemble, repair, or modify the unit yourself. A high-voltage area is located inside the
unit. Any work carried out by unauthorized personnel may result in electric shock. Contact our
sales representative or agent for maintenance or repair.
Make sure the power supply plug is pushed fully in. Faulty insertion of the power supply plug
may cause electric shock or fire due to generation of heat. Never use a damaged power supply plug
or loose power outlet.
Disconnect the power supply plug if there is anything wrong with the unit. Continued abnormal
operation may cause electric shock or fire.
Grip the power supply plug when disconnecting the power supply cord from the outlet.
Pulling the power supply cord may cause electric shock or short circuit.
Remove dust from the power supply plug periodically. Dust on the power supply plug may
cause insulation failure due to moisture and thus cause a fire. Disconnect the power supply plug and
wipe it with a dry cloth.
WARNING

7
PRECAUTIONS FOR SAFE OPERATION
Disconnect the power supply plug before moving unit. Take care not to damage the power
supply cord. A damaged power supply cord may cause electric shock or fire.
Disconnect the power supply cord when the unit is not in use for long periods. Keeping the
unit connected may cause electric shock, leakage, or fire due to the deterioration of insulation.
If the unit is to be stored unused in an unsupervised area for a long period, ensure that children do
not have access and that doors cannot be closed completely.
Ask a qualified contractor to carry out disassembly and disposal of the unit. Leaving the unit in
a location that can be accessed by third parties may result in unexpected accidents (e.g. the unit may
be used for unintended purposes).
Do not leave the plastic bags used for packing in a place where they can be reached by small
children as this may result in unexpected accidents such as suffocation.
Never replace the battery for the power-failure alarm. Only qualified engineers or service
personnel should replace the battery.
When moving the unit, be sure to take precautions to prevent it from falling over. Moving the
unit with too much force may cause it to fall over, possibly resulting in injury. A qualified individual
must be assigned to supervise the safe movement and relocation of the unit.
WARNING

8
PRECAUTIONS FOR SAFE OPERATION
Never install the unit in a location where corrosive materials such as sulphur compounds are
likely to be generated (e.g. near a drainage facility). Corrosion of the copper pipes may result in
the deterioration and consequently the failure of the cooling unit.
This unit must be plugged into a dedicated circuit protected by branch circuit breaker.
Use a dedicated power source as indicated on the rating label attached to the unit. A
multiple-tap may cause fire resulting from abnormal heating.
Do not climb on top of the unit or put any objects on the unit. Falling from the unit may cause
injury; falling objects may cause damage to the unit.
Do not touch the evaporating pipe directly. The evaporating pipe is hot. Touching the
evaporating pipe during or immediately after operation of the unit may cause injury.
Always store items in the drawers. Storing items outside the drawers may cause the items to
degrade and decrease in quality.
Never store corrosive substances such as acids or alkalis in the unit except in a sealed
container. These may be detrimental to health and may cause corrosion of internal components or
electrical components.
Before resuming operation after the unit has been turned off, be absolutely sure to check the
settings. The settings may have changed as a result of stopping the unit. Items stored inside the
unit may be adversely affected if operation of the unit is resumed with changed settings.
To ensure the safety of the service engineer, submit a safety check sheet with the required
items filled out. This is provided as the photocopiable “Safety Check Sheet” at the end of these
operating instructions.
CAUTION

9
LABELS ON UNIT
<Labels applied to the unit>
To avoid accidents, users are advised to read carefully the hazard labels found at key locations on the
interior and exterior of the unit.
Possible
Danger
Caution Type
Location of Danger
Caution Label Description of Danger
Burns Hot surface
Cooling unit and heat
cover
Avoid touching the cooling system
and heat cover, which can reach
high temperatures and may cause
burns.
SYMBOLS ON UNIT
The following symbols are attached to the unit. The table describes the meaning of the symbols.
This symbol is attached to covers that access high-voltage electrical components to
prevent electric shock. Only a qualified engineer or service personnel should be
allowed to open these covers.
This symbol indicates that caution is required. Refer to product documentation for
details.
This symbol indicates an earth.
This symbol means “ON” for a power switch.
This symbol means “OFF” for a power switch.
ENVIRONMENTAL CONDITIONS
This equipment is designed to be safe at least under the following conditions (based on the IEC 61010-1):
Indoor use;
Altitude up to 2000 m;
Temperature 5 oC to 40 oC;
Maximum relative humidity 80 % for temperature up to 31 oC decreasing linearly to 50 % relative
humidity at 40 oC;
Mains supply voltage fluctuations up to ±10 % of the nominal voltage;
Transient overvoltages up to the levels of OVERVOLTAGE CATEGORY II;
Temporary OVERVOLTAGES occurring on the mains supply;
Applicable pollution degree of the intended environment (POLLUTION DEGREE 2 in most cases);

10
REFRIGERATOR COMPONENTS
Refrigerator unit
1
Fluorescent lamp
[page 27]
Temperature recorder
Light switch
3
5
7
Door gaske
t
2
4
6
9
(upper & lower)
8
(both sides & top)
10
11
Key hole

11
REFRIGERATOR COMPONENTS
1. Front cover: This cover can be opened by pulling the bottom on either side. Open this cover when
using the remote alarm terminal or replacing the glow starter. [page 13]
2. Control panel: Using the keys on the control panel, temperature display can be changed and the
alarm test is available. In addition, the LED panel (temperature display) displays the running
temperature and indicator lamps alert users in the event of an alarm condition. [page 12]
3. Air exhaust vent (side of duct): Do not block this vent. Blocking this vent may cause unstable
chamber temperature. Arrange the stored items so that they are not directly subjected to the cold air
from this vent.
4. Inner door: This prevents cold air from escaping when the outer door is opened. Always close the
inner door securely before closing the outer door.
5. Levelling foot (front, 2 locations): These are screw bolts used to install and fix the unit. Adjust the
height of the levelling feet by turning the screw bolts until the two front casters are away from the floor.
[page 15]
6. Dew collector: The condensation on the outer door is accumulated in this dew collector. Wipe off the
water from the dew collector with a cloth.
Condensation may be found on the outer door frame with ambient humidity of about 50 %R.H. and on
the glass surface of the outer door with ambient humidity of about 60 %R.H. This is not a malfunction.
7. Drawer: The maximum load is 40 kg per drawer. (W 550 mm x D 580 mm x H 100 mm)
Items to be stored in the chamber must be placed in the drawers. Do not store items directly on the
bottom of the chamber.
8. Access port (both sides & top): This port allows a sensor or measuring cable to enter the chamber
from outside.
Replace the insulation and the rubber caps when the access port is not in use. Improper replacement
may cause an increase in chamber temperature or condensation around the access port.
9. Monitor bottle (upper and lower): A sensor to measure the chamber temperature is attached to the
monitor bottle. Fill the bottle with 200 mL of 10 % glycerol fluid or water before commencing operation.
[page 16]
10. Air intake vent (upper front): Do not block this vent. Blocking this vent may cause unstable
chamber temperature. Do not insert fingers or other objects into the vent.
11. Door alarm switch: This switch detects the door status (open/closed). The door alarm indicator is
ON when the outer door is open and the alarm buzzer sounds after a 2-minute delay. [page 24]

12
REFRIGERATOR COMPONENTS
Control panel
1. Door check indicator (DOOR): The red LED lamp lights up when the outer door is opened.
2 minutes after the door check indicator is turned ON, the buzzer is activated to notify the user that the
door is open. [page 24]
2. Alarm indicator (ALARM): The red LED lamp blinks in the event of an alarm. [page 24]
3. Battery indicator (BATTERY): The orange LED lamp lights up to indicate that the battery needs to be
replaced (every 3 years). The orange LED lamp blinks to indicate that the fan motor needs to be
replaced (every 6 years). [page 25]
4. Temperature display indicator (LOWER): This lamp lights up when the lower monitor bottle
temperature is displayed or when the average of the lower and upper monitor bottle temperatures is
displayed on the temperature display.
5. Temperature display indicator (UPPER): This lamp lights up when the upper monitor bottle
temperature is displayed or when the average of the lower and upper monitor bottle temperatures is
displayed on the temperature display.
6. Temperature display: Normally this shows the present chamber temperature; during an alarm, the
display blinks [page 24]. An error code and a chamber temperature are displayed alternately when the
self-diagnostic function detects any abnormality. [page 25]
7. Up arrow key ( ): This key is used during calibration of the sensor for temperature display. This
key is for service use only and should be used only by service personnel.
8. Scroll key ( ): This key is for service use only and should be used only by service personnel.
9. Calibration key (CAL): This key is used for the calibration of the sensor for temperature display. This
key is for service use only and should be used only by service personnel.
10. Temperature display changeover key (UPPER/LOWER): By pressing this key, the displayed
temperature is changed in the following sequence:- upper temperature, lower temperature, average of
upper and lower temperature. [page 19]
11. Alarm test key (ALARM TEST): This key is used to check the operation of the alarm buzzer, alarm
indicator, and remote alarm terminal. [page 26]
12. Alarm buzzer stop key (BUZZER): Pressing this key stops the alarm buzzer when the alarm
indicator blinks and the alarm buzzer sounds.
In the event of a power failure, the alarm buzzer cannot be stopped by the alarm buzzer stop key.
12 9 8 7
621 4 5
1011
3

13
REFRIGERATOR COMPONENTS
Inside of front cover
The glow starter, remote alarm terminal and the battery
switch are accessible by opening the front cover.
To open the front cover, lift up from the bottom of the
cover on either side.
Support the front cover with the stopper (refer to the
right figure) when opening the front cover.
1. Glow starter: This is a glow starter for the fluorescent lamp. It is recommended that the glow starter
is replaced at the same time as the fluorescent lamp. For details of replacement, see page 28.
2. Remote alarm terminal: A remote alarm device (commercial item) can be connected to this terminal.
The remote alarm relays the alarm to a device in a remote area. Refer to page 20 for details.
3. Battery switch (at the bottom): This is an ON-OFF switch for the battery for the power-failure alarm.
Always turn this switch on when the unit is operating to ensure that the power-failure alarm is working.
Turn this switch off when the unit is not used for a long period in order to protect the battery.
Back of the unit
1. Power switch
This is a power switch of the unit. “l”= ON, “O”= OFF.
2. Evaporating pipe
3. Evaporating tray
The water from the evaporator is accumulated and
vaporized by the evaporating pipe in this tray. Refer to
page 27 for cleaning.
4. Spacer
The spacer maintains a space between the back of the unit
and the wall to maintain the unit’s cooling performance.
This spacer is also used as a fixture. Secure the unit
firmly by using a rope or chain. [page 15]
3 OFF
ON
1
2
Front cover
Stopper
4
1
3
2

14
INSTALLATION SITE
This unit must be installed in a location which meets all the conditions described below.
If the unit is installed in a location which does not meet the conditions, its specified performance may
not be achieved or malfunctions and accidents may occur.
A location not exposed to direct sunlight
Avoid any location which is exposed to direct sunlight. Installing the unit in a location exposed to direct
sunlight may reduce its cooling performance.
A well-ventilated (airy) location
In order to ensure ventilation, leave clearances of at least 10 cm around the unit (at the left, right, back,
and top). Blocking the ventilation may reduce the unit’s cooling performance or cause malfunctions.
A location away from sources of heat
Avoid any location which is close to a major source of heat (such as a heater or boiler). Installing the
unit near a major source of heat may reduce the unit’s cooling performance.
A location with minimal changes in temperature
Avoid any location where the ambient temperature is subject to sudden changes. If the unit is installed
in a location where the ambient temperature is subject to sudden changes, it will not be possible to
achieve a stable cooling performance.
A flat surface where the floor is also capable of bearing the total combined weight (product +
optional accessories + stored items)
Install the unit on a flat surface which is even and which is capable of bearing the total combined weight
(product + optional accessories + stored items). If the unit is installed where the surface is uneven or
where the unit will be inclined at an angle, the unit will be unstable, and accidents or injuries may occur
and/or vibration or unnecessary noise may be generated.
A location with minimal humidity
Install the unit in a location where the relative humidity is less than 80 %R.H. Installing the unit in a very
humid location may cause earth faults and/or electric shock.
A location free of flammable or corrosive gases
Avoid any location exposed to flammable or corrosive gases. Flammable or corrosive gases can cause
explosions and/or a fire. Furthermore, corrosion of electrical parts may cause insulation to be reduced
and result in earth faults and/or electric shock.
A location where nothing can fall onto the unit
Avoid locations where objects may fall onto the unit. Objects falling and hitting the unit may cause it to
break down or fail.

15
INSTALLATION
1. Preparations after unpacking
Remove all the tape used to secure the doors and interior parts, and leave the doors open for a short
while for ventilation.
If any surfaces of the outer cabinet are dirty, wipe the surface using a cloth moistened with a diluted
neutral dish-washing detergent.
Using an undiluted solution of detergent may cause the unit’s plastic areas to crack. Follow the
directions on the detergent for details of dilution.
After wiping the unit using the diluted detergent, be absolutely sure to wipe the surfaces with a cloth
dipped in clean water to remove traces of the detergent. After this, be absolutely sure to wipe the
surfaces with a dry cloth, allowing the surfaces of the outer cabinet to dry out completely, and then
proceed with the installation.
Note:
Remove the cable tie that binds the power supply cord. Prolonged contact with the tie may cause
corrosion of the cord coating.
2. Securing and levelling the unit using the levelling
feet
Rotate the front levelling feet clockwise until the casters
are raised 5 mm to 10 mm above the floor surface. [Fig. 1]
In addition, rotate the levelling feet slightly clockwise or
anticlockwise, and adjust them so that the unit is
completely level.
When the casters are raised from the floor surface, the
unit will be secured. If they are left touching the floor, the
unit may accidently move when its door is opened or
closed.
3. Securing the unit by using the spacers
Use the spacers on the rear panel of the unit (which are
also used to prevent the product from tilting or toppling
over), and secure the unit to a wall with a strong rope or
chain. [Fig. 2]
Note:
Contact our sales representative or agent if the unit needs
to be secured for earthquake resistance.
4. Preventing electric shock by earthing the unit
When installing the unit, be absolutely sure to earth
(ground) it. Earthing is necessary to prevent electric
shocks resulting from deterioration of electrical insulations.
This unit comes with a 3-pin plug having one earth pin.
Earthing is not required in the case of a 3-pin power outlet
equipped with an earth contact.
If the power outlet is not a 3-pin outlet equipped with an
earth contact, ask a qualified contractor to do the earthing
work.
Fig. 1
Fig. 2
Spacer
Levelling foot

16
PREPARATION OF MONITOR BOTTLE
Before commencing operation, fill the monitor bottles (upper and lower) 200 mL of 10 % glycerol fluid or
water by following the procedure below.
1. Remove the top and bottom drawers.
2. Remove the cover on the monitor bottle.
The cover is fixed by clicking the top and bottom into
place. It can be removed by pulling the upper side
forward as shown in Fig. 1.
3. Take the sensor for temperature display out of the
monitor bottle.
The sensor for temperature display is not fixed, and so
can be removed together with the cover.
Take out the recorder sensor from the upper monitor
bottle as well.
4. Take out the monitor bottle.
5. Remove the (screw-type) cap from the monitor bottle as
shown in Fig. 2.
6. Pour 200 mL of 10 % glycerol fluid or water (using the
marking on the bottle) into the monitor bottle.
The displayed chamber temperature cannot be accurate
if the fluid volume in the monitor bottle is low. Check the
fluid volume regularly.
7. Put the cap back on the monitor bottle and replace the
monitor bottle in its original location.
8. Attach the sensor for temperature display to the monitor bottle and replace the cover.
Attach the recorder sensor to the upper monitor bottle as well.
9. Replace the top and bottom drawers.
Cove
r
Recorder sensor
(upper monitor bottle)
Sensor for
temp. display
Fig. 1
Loosen
Cap
Fig. 2
Monitor bottle

17
START-UP OF UNIT
Follow this procedure for the initial operation of the unit and for consequent operations (after temporary
stoppages for cleaning, maintenance, or moving).
After a power failure, the unit will restart operation automatically with the temperature setting of 4 oC.
1. With the unit empty, connect the power supply plug to a dedicated outlet with appropriate rating, and
turn on the power switch.
►The alarm buzzer will operate. Stop the alarm buzzer by pressing the alarm buzzer stop key
(BUZZER). The alarm buzzer recovers after 30 minutes. (This is caused by the high-temperature
alarm function and is not a malfunction.)
2. Fill the monitor bottles with 200 mL of 10 % glycerol fluid or water. [page 16]
<Important>
Close the doors (both outer and inner doors) securely. The door check indicator will be lit when the
outer door is open. The alarm buzzer will be activated when the outer door is open for more than 2
minutes. The alarm buzzer will turn off when the outer door is closed.
3. The chamber temperature is set to 4 oC at the factory. Check that the chamber temperature reaches
4 oC on the temperature display.
Check that the chamber temperature falls to 4 oC on the temperature display when restarting the unit
after cleaning, maintenance, or moving.
4. Turn on the light switch to check that the fluorescent lamp is on. After checking, turn off the light
switch if the light is not required.
5. Turn on the battery switch.
<Important>
Always turn the battery switch on when the unit is operating to ensure that the power-failure alarm is
working.
6. Turn on the power switch of the temperature recorder. [page 21]
7. When putting items into the chamber, it is recommended to do so gradually in order to minimize the
sudden increase in temperature.
<Important>
Never store items on the bottom of the chamber. Always store items in the drawers.
Never store items other than blood in the chamber together with blood products.
Never stack blood bags in the drawers.
<Attention>
Under high ambient temperature and humidity, condensation will accumulate on the outer door glass
during operation of the unit. Wipe off the condensation with a dry soft cloth. Also, wipe off the water
from the dew collector regularly.

18
PLACEMENT OF STORED ITEMS
Do not place stored items so as to disrupt the air circulation in the chamber. Disruption of air circulation
can cause the freezing of stored items or can impair the temperature distribution in the chamber.
Air intake vent
Do not block the air intake vent with the stored items. Care should be taken not to put any paper or
plastic chips near the air intake vent. These may be sucked in and block the air intake vent.
Air exhaust vent
Do not block the air exhaust by the stored items near the air exhaust vent. Care should be taken not to
place stored items near to the air exhaust vent. The stored items may become frozen.
<Important>
Never block the air intake or exhaust vent. Moreover, never disrupt the air circulation. Always place
stored items so that they have adequate space around them.
<Important>
Blood bags should always be stored in the drawers. Never store the blood bags directly on the bottom
of the chamber.
In addition, never stack the blood bags in the drawers.

19
DISPLAY OF CHAMBER TEMPERATURE
The chamber temperature is set to 4 oC at the factory. The temperature on the temperature display
shows the temperature of the sensor for temperature display attached to the monitor bottle (upper and
lower).
By pressing the temperature display changeover key, the displayed temperature is changed in the
following sequence: upper temperature, lower temperature, average of upper and lower temperature.
Table 1 shows the procedure for changeover.
<Important>
The upper temperature represents the temperature of the upper monitor bottle and the lower temperature
represents the temperature of the lower monitor bottle. Accordingly, the displayed temperature is not
always 4 oC. This is not a malfunction.
Table 1. Changeover of temperature display : Lamp ON : Lamp OFF
Operation Key operated Indication after operation Display mode
1
Plug-in the power supply
plug and turn on the
power switch.
----- Average temperature
is displayed.
UPPER
LOWER
Average
temperature
2 Press the temperature
display changeover key.
Upper temperature is
displayed.
UPPER
LOWER
Upper
temperature
3 Press the temperature
display changeover key.
Lower temperature is
displayed.
UPPER
LOWER
Lower
temperature
4 Press the temperature
display changeover key.
Average temperature
is displayed.
UPPER
LOWER
Average
temperature
5 Repeat from step 2.
DEFROSTING OF EVAPORATOR
The following two defrosting methods are adopted in this unit. Both of them are controlled automatically.
Cycle defrost
To keep the chamber temperature stable, the compressor is turned on and off in cycles. During the “off”
period any frost which has accumulated on the evaporator is melted by a defrosting heater. This will not
have any significant effect on the chamber temperature.
Forced defrost
When the ambient humidity is high, or when a large number of damp items are being stored in the
chamber, there is a possibility that the cycle defrost may not be sufficient to remove all of the frost on the
evaporator. In this case, a forced defrost can be initiated.
When the unit is operating under the forced defrost, the current chamber temperature and “dF” are
displayed alternately on the temperature display.
Once the forced defrost is completed, the normal operation will resume. The temperature of blood bags
(400 mL) in the chamber will rise by approximately 1 oC during the forced defrost.
UPPE
R
LOWE
R
UPPE
R
LOWE
R
UPPE
R
LOWE
R

20
REMOTE ALARM TERMINAL
The alarm is relayed to a remote location when a remote alarm device (commercially available) is
connected to the remote alarm terminal. Installation of a remote alarm device is recommended when the
unit is installed in an unattended location so that the operator of the unit is notified of the alarm.
Contact our representative or agent to arrange the installation of a remote alarm device.
 Location of remote alarm terminal: inside the front cover [page 13]
 Allowable contact capacity: DC 30 V, 2 A
Contact output:
between COM and N.O. between COM and N.C.
At normal status open closed
At abnormal status closed open
The alarm mode of the remote alarm terminal is cancelled by pressing the alarm buzzer stop key
(BUZZER) since the remote alarm terminal is operated in conjunction with the alarm buzzer. However,
the alarm mode of the remote alarm terminal is not cancelled by pressing the alarm buzzer stop key
(BUZZER) when the unit is under power-failure alarm.
The remote alarm terminal will be in alarm mode when the power supply cord is unplugged because
this will be interpreted as a power failure. In this case, the alarm mode of the remote alarm terminal will
not be cancelled by pressing the alarm buzzer stop key (BUZZER).
Connecting a remote alarm device
1. Open the front cover. [Fig. 1]
For the details to open the front cover, refer to page 13.
2. Connect the lead wire of the remote alarm device to the
remote alarm terminal. [Fig.2]
3. Pass the lead wire of the remote alarm device through
the port in the top cover. [Fig. 3]
3. Close the front cover.
Use a twisted shielded wire for the connection.
Type: UL 2343, UL 2448, UL 2464, UL 2552, UL 2623
Length: 30 m max.
Fig. 2
Front cover
Fig. 1
N.C. COM N.O.
Port
Fig. 3