1
CONTENTS
INTRODUCTION ································································2
PRECAUTIONS FOR SAFE OPERATION ································3
ENVIRONMENTAL CONDITIONS ··········································7
REFRIGERATOR COMPONENTS ·········································8
Inside of front cover ······················································ 10
Control panel ······························································· 11
INSTALLATION SITE ························································ 12
INSTALLATION ································································ 13
START-UP OF UNIT ························································· 14
STOCK OF CONTAINERS ·················································· 15
CHAMBER TEMPERATURE SETTING ································· 16
KEY LOCK FUNCTION ······················································ 16
ALARM TEMPERATURE SETTING ······································ 17
SETTING OF DELAY OF DOOR ALARM ······························· 18
SETTING OF RINGBACK OF ALARM BUZZER ······················ 19
OPERATION CHECK AFTER RECOVERY ···························· 19
DEFROST CYCLES ·························································· 20
REMOTE ALARM TERMINAL ············································· 20
ALARMS & SAFETY FUNCTIONS ······································· 21
ROUTINE MAINTENANCE ················································· 22
Cleaning of cabinet ······················································· 22
Cleaning of evaporating tray ··········································· 22
Replacement of fluorescent lamp ····································· 23
Replacement of glow starter ············································ 23
TROUBLESHOOTING ······················································· 24
DISPOSAL OF UNIT ························································· 24
Decontamination of unit ················································· 24
OPTIONAL COMPONENTS ················································ 29
Temperature recorder ···················································· 29
BATTERY MOUNTING BOX (OPTION) ································· 30
SPECIFICATIONS ···························································· 31
PERFORMANCE ······························································ 32
SAFETY CHECK SHEET···················································· 33
2
INTRODUCTION
Read the operating instructions carefully before using the appliance and follow the instructions for
safety operation.
PHC Corporation never guarantees any safety if the appliance is used for any objects other than intended
use or used by any procedures other than those mentioned in the operating instructions.
Keep the operating instructions in an adequate place to refer to it as necessary.
The contents of the operating instructions will be subjected to change without notice due to the
improvement of performance or functions.
Contact our sales representative or agent if any page of the operating instructions is lost or page order
is incorrect.
Contact our sales representative or agent if any point in the operating instructions is unclear or if there
are any inaccuracies.
No part of the operating instructions may be reproduced in any form without the expressed 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 pharmaceuticals, samples and reagents.
3
PRECAUTIONS FOR SAFE OPERATION
It is imperative that the user complies with the operating instructions
as it contains important safety advice.
Items and procedures are described so that you can use this unit correctly and safely.
If the precautions advised are followed, this will prevent possible injury to the user and
any other person.
Precautions are illustrated in the following way:
WARNING
Failure to observe WARNING signs could result in a hazard to personnel
possibly resulting 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.
Symbol shows;
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 accessible to users of this unit.
< Label on the unit >
This mark is labeled on the cover in which the electrical components of high voltage
are enclosed to prevent the electric shock.
The cover should be removed by a qualified engineer or service personnel only.
USA Only: This product has a fluorescent lamp that contains mercury. Disposal may be regulated in your
community due to environmental considerations. For disposal or information, please visit PHC website:
https://www.phchd.com.
Contains mercury / Contenu avec mercure
For more information on safe handling
procedures, the measures to be taken in
case of accidental breakage and safe
disposal options visit:
ec.gc.ca/mercure-mercury/.
Dispose of or recycle in accordance with
applicable laws.
Pour plus de renseignements sur les
procédures de manutention sécuritaire, les
mesures à prendre en cas de bris accidentel et
les options d’élimination sécuritaire visitez:
ec.gc.ca/mercure-mercury/.
Mettez au rebut ou recyclez conformément
aux lois applicables.
4
PRECAUTIONS FOR SAFE OPERATION
Do not use the unit outdoors. Current leakage or electric shock may result if the unit is exposed to
rain water.
Only qualified engineers or service personnel should install the unit. The installation by
unqualified personnel may cause electric shock or fire.
Install the unit on a sturdy floor and take an adequate precaution to prevent the unit from
turning over. If the floor is not strong enough or the installation site is not adequate, this may result
in injury from the unit falling or tipping over.
Never install the unit in a humid place or a place where it is likely to be splashed by water.
Deterioration of the insulation may result which could cause current leakage or electric shock.
Never install the unit in a flammable or volatile location. This may cause explosion or fire.
Never install the unit where acid or corrosive gases are present as current leakage or electric
shock may result due to corrosion.
Always ground (earth) the unit to prevent electric shock. If the power supply outlet is not
grounded, it will be necessary to install a ground by qualified engineers.
Never ground the unit through a gas pipe, water main, telephone line or lightning rod. Such
grounding may cause electric shock in the case of an incomplete circuit.
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 if the container cannot be sealed. These
may cause explosion or fire.
Do not insert metal objects such as a pin or a wire into any vent, gap or any outlet on the unit.
This may cause electric shock or injury by accidental contact with moving parts.
Use this unit in safe area when treating the poison, harmful or radiate articles. Improper use
may cause bad effect on your health or environment.
Turn off the power switch (if provided) and disconnect the power supply to the unit prior to any
repair or maintenance of the unit in order to prevent electric shock 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.
WARNING
5
PRECAUTIONS FOR SAFE OPERATION
Ensure you do not inhale or consume medication or aerosols from around the unit at the time of
maintenance. These may be harmful to your health.
Never splash water directly onto the unit as this may cause electric shock or short circuit.
Never put containers with liquid on the unit as this may cause electric shock or short circuit when
the liquid is spilled.
Never bind, process, or step on the power supply cord, or never damage or break the power
supply plug. A broken supply cord or plug may cause fire or electric shock.
Do not use the power supply cord if its power supply plug is loose. Such power supply cord
may cause fire or electric shock.
Never disassemble, repair, or modify the unit yourself. Any such work carried out by an
unauthorized person may result in fire, or electric shock or injury due to a malfunction.
Disconnect the power supply plug if there is something wrong with the unit. Continued
abnormal operation may cause electric shock or fire.
Do not position this unit and the other unit so that it is difficult to operate the disconnection of
the power supply plug. Failure to disconnect the power supply plug may cause fire if there is
something wrong with the unit.
When removing the power supply plug from the power supply outlet, grip the power supply
plug, not the cord. Pulling the cord may result in electric shock or fire by short circuit.
Disconnect the power supply plug before moving the unit. Take care not to damage the power
supply cord. A damaged cord may cause electric shock or fire.
Disconnect the power supply plug when the unit is not used for long periods. Keeping the
connection may cause electric shock, current leakage, or fire due to the deterioration of insulation.
If the unit is to be stored unused in an unsupervised area for an extended period, ensure that
children do not have access and that doors cannot be closed completely.
The disposal of the unit should be accomplished by appropriate personnel. Remove doors to
prevent accidents such as suffocation.
Do not put the packing plastic bag within reach of children as suffocation may result.
WARNING
6
PRECAUTIONS FOR SAFE OPERATION
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.
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,
cooling circuit or electrical components.
Check the setting when starting up of operation after power failure or turning off of power
switch. The stored items may be damaged due to the change of setting.
Be careful not to tip over the unit during movement to prevent damage or injury.
Prepare a safety check sheet when you request any repair or maintenance for the safety of service
personnel.
CAUTION
7
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;
Ambient 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 (POLUTION DEGREE 2 in most cases)
8
REFRIGERATOR COMPONENTS
1
8
9
2
13
4
12
6
11
MPR-721
7
5
3
16
15
17
18
10
14
19
MPR-721R
13
Back side
17
18
6
9
REFRIGERATOR COMPONENTS
1. Front cover: Open this cover when connecting the remote alarm or replacing glow starter for
fluorescent lamp.
2. Control panel: The chamber temperature and alarms can be set through the keys on the control
panel. The temperature indicator and lamps are also provided on the control panel. Refer to page 11.
3. Light switch: This switch is used for turning the fluorescent lamp off and on.
4. Space for temperature recorder: A temperature recorder (optional component) can be mounted
here. See page 29.
5. Fluorescent lamp: 20 W lamp. See page 23 for replacement.
6. Circuit breaker (right back side): This disconnects the power when any abnormality is occurred and
over current is rushed. Rated AC 250 V, 10 A.
7. Lock: Turn the key counterclockwise through 180o to securely lock the door.
8. Glass window: The window may have condensation in high humidity environment. Wipe off the
condensation with a soft dry cloth.
9. Handle: Always hold the handle when opening/closing the door.
10. Condensation tray: The condensation on the door is accumulated in this tray. Wipe off the water
occasionally.
11. Leveling foot: Adjust the height of the leveling feet by turning the screw bolts until the unit is level.
12. Castor: When installing the unit the castors can be raised from the ground by using the leveling feet
above.
13. Shelf (MPR-721 only): Items to be stored in the chamber must be placed on the shelves. The
maximum storage weight for each shelf is 50 kg. Do not put stored items directly onto the interior floor of
the chamber. See page 15.
Drawer (MPR-721R only): Items to be stored in the chamber must be placed on the drawers. The
maximum storage weight for each drawer is 40 kg.
14. Access port: This port allows temperature measurement cables to enter the chamber from outside.
A total of three (3) ports are provided; left side, right side and top.
15. Air exhaust vent: Do not block this vent. If this vent is blocked, temperature regulation will become
unstable. Do not place stored items in the path of the cold air.
16. Air intake vent: Do not block this vent. If this vent is blocked, temperature regulation will become
unstable. Do not insert a finger or any foreign object into this vent as there is danger from the internal fan.
17. Evaporating tray (back side): Defrost water from the evaporator accumulates on the tray and
evaporates into the atmosphere. See page 22 for cleaning.
18. Fixture (back side): These keep the adequate space between the unit and wall and also can be
used for fixing the unit. See page 13.
19. Battery mounting box MPR-48B1 (option): MPR-48B1 (option) is installed. See page 30.
10
REFRIGERATOR COMPONENTS
Inside of front cover
1. Glow starter (with cover): This is for the fluorescent light. It is recommended that the glow starter
is also replaced when the fluorescent light is replaced. Refer to page 23.
2. Remote alarm terminal: This is used to connect the unit to an exterior alarm to notify users of any
malfunction. Refer to page 20.
1
2
11
REFRIGERATOR COMPONENTS
Control panel
1. Door alarm lamp (DOOR): This lamp is lit when the door is opened.
2. Alarm lamp (ALARM): This lamp flashes during an alarm condition.
3. Digital temperature indicator: This indicator shows the present chamber temperature or set
temperature.
4. Numerical value shift key ( ): Pressing this key in the set mode causes the numerical value to
scroll up. ON-OFF of key lock can be selected by pressing this key in the key lock setting mode. See
page 16 to page 19.
5. Digit shift key ( ): Pressing this key in the set mode alters the digit to be set. Key lock setting
mode is led by pressing this key for more than 5 seconds in the temperature display mode. Refer to
page 16 for the key lock.
6. Set key (SET): Temperature setting mode is initiated by pressing this key. Once the key is pressed,
the digit to be changed will flash. Pressing this key again after setting the desired temperature stores
the set temperature in the memory. If there is no key operation for 90 seconds during the temperature
setting mode, the temperature setting mode is invalid automatically.
7. Alarm buzzer stop key (BUZZER): To silence the audible alarm, press this key. Press it once
again to reactivate the alarm.
7 6 5 4
3 2 1
12
INSTALLATION SITE
To operate this unit properly and to obtain maximum performance, install the unit in a location with the
following conditions:
A location not subjected to direct sunlight
Do not install the unit under direct sunlight. Installation in a location subjected to direct sunlight cannot
obtain the intended performance.
A location with adequate ventilation
Leave at least 10 cm around the unit for ventilation. Poor ventilation will result in a reduction of the
performance and consequently the failure.
A location away from heat generating sources
Avoid installing the unit near heat-emitting appliances such as a heater or a boiler etc. Heat can
decrease the intended performance of the unit.
A location with little temperature change
Install the unit under stable ambient temperature. The allowable ambient temperature is between -5 oC
and +35 oC.
A location with a sturdy and level floor
Always install the unit on a sturdy and level floor. The uneven floor or tilted installation may cause failure
or injury. Install the unit in stable condition to avoid the vibration or noise. Unstable condition may
cause vibration or noise.
WARNING
Install the unit on a sturdy floor. If the floor is not strong enough or the installation site is not
adequate, this may result in injury from the unit falling or tipping over.
Select a level and sturdy floor for installation. This precaution will prevent the unit from tipping.
Improper installation may result in water spillage or injury from the unit tipping over.
A location not prone to high humidity
Install the unit in the ambient of 80 %R.H. or less humidity. Installation under high humidity may cause
current leakage or electric shock.
WARNING
Do not use the unit outdoors. Current leakage or electric shock may result if the unit is exposed to
rain water.
Never install the unit in a humid place or a place where it is likely to be splashed by water.
Deterioration of the insulation may result which could cause current leakage or electric shock.
A location without flammable or corrosive gas
Never install the unit in a location where it will be exposed to flammable or corrosive gas. This may
cause explosion or fire or may result in the current leakage or electric shock by the corrosion of the
electrical components.
A location without the possibility of anything fall
Avoid installing the unit in the location where anything can fall down onto the unit. This may cause the
breakdown or failure of the unit.
13
INSTALLATION
1. Removing the packaging materials and tapes
Remove all transportation packaging materials and tapes.
Open the doors and ventilate the unit. If the outside
panels are dirty, clean them with a diluted neutral
dishwashing detergent. (Undiluted detergent can damage
the plastic components. For the dilution, refer to the
instruction of the detergent.) After the cleaning with the
diluted detergent, always wipe it off with a wet cloth. Then
wipe off the panels with a dry cloth.
Note:
Remove the cable tie banding the power supply cord.
Prolonged banding may cause the corrosion of the cord
coating.
2. Adjusting the leveling feet
Stretch the leveling feet by rotating them to contact them to
the floor. Ensure the unit is horizontal. See Fig. 1.
3. Fixing the unit
Two fixtures are attached to the rear of the frame. Fix the
frame to the wall by attaching a rope or chain between the
wall and the fixtures. See Fig. 2.
4. Ground (earth)
The ground (earth) is for preventing the electric shock in the case of unexpected deterioration of the
electrical insulation. Always ground the unit at the time of installation.
WARNING
Use a power supply outlet with ground (earth) to prevent electric shock. If the power supply outlet is
not grounded, it is necessary to install a ground by qualified engineers.
Never ground the unit through a gas pipe, water main, telephone line or lightning rod. Such
grounding may cause electric shock in the case of an incomplete circuit.
Fig. 2
Fixture
Leveling foot Fig. 1
Stretch
14
START-UP OF UNIT
Use the following procedure to start trial operation or actual operation of the unit.
1. Connect the power supply cord to the dedicated outlet with appropriate rating.
CAUTION
If the unit is unplugged or the power to the unit is interrupted, do not restart the unit for at least 5 minutes.
This protects the compressor.
2. On start-up, the alarm buzzer sometimes operates. In this case, stop the buzzer by pressing the
alarm buzzer stop key (BUZZER).
3. Set the chamber temperature to 5 oC.
4. Allow the chamber temperature to fall to 5 oC. Check the chamber temperature on the temperature
indicator.
5. Turn on the light switch to check the light. After checking, turn off the switch if the light is not
necessary.
6. Set the desired temperature. When the chamber temperature gets to the set temperature, begin
slowly placing items into the chamber to minimize the temperature rise.
CAUTION
The chamber is refrigerated by the forced circulation of cooled air inside the chamber. Ensure that the
air intake and exhaust vents are not blocked. Adequate space should be provided between the items
inside the unit to allow air circulation.
If any electrical equipment is used in the chamber, the chamber temperature cannot be maintained due to
the heat emission from the equipment. Refer to the table below when you use any equipment.
(at ambient temperature of 35
oC)
Heat load in chamber Lowest chamber temperature
100 W 2 oC
200 W 9 oC
300 W 18 oC
15
STOCK OF CONTAINERS
Always distribute items so as not to disturb the air circulation in the chamber. Disruption of the
air flow can cause items to freeze or reduce the uniformity of the chamber temperature.
Never put any articles on the top of the unit.
Air intake vent
Do not block this vent with containers. If this vent
becomes blocked, temperature regulation becomes
unstable. Do not place paper or vinyl near the vent as
they may be sucked into the fan.
Air exhaust vent
Do not block this vent with containers as this can
impede air circulation. Items stored near the exhaust
air vent can freeze when the refrigerator is operating
at temperature settings lower than 5 oC.
Load line
In this refrigerator, storage space is limited to allow
the passage of cool air around the chamber. The
label “load line” is fixed to both sides of the chamber.
Always stock items within this line.
CAUTION
Never store corrosive substances in this unit. This may lead to damage to the inner components or
electric parts.
Load line
Load line
Stock space
Side view
Cooling air
Fan Air exhaust vent
Air intake vent
16
CHAMBER TEMPERATURE SETTING
Table 1 shows the basic procedure for setting the chamber temperature. Perform key operations in the
sequence indicated in the table. The example in the table is based on the assumption that the desired
temperature is 4 oC.
Note: The chamber temperature is set to 5 oC at the factory.
Table 1 Basic operation sequence (Example: Chamber set temperature 4 oC)
Description of operation Key operated Indication after operation
1 Turn the power switch ON. ---- The current chamber temperature is
displayed.
2 Press set key. SET The first digit is flashed.
3 Press numerical value shift key and
scroll the figure to 4. When pressed, the figure of settable
digit changes.
4 Press set key. SET
Set temperature is memorized and the
current chamber temperature is
displayed.
Note:
The temperature set mode returns to the temperature display mode automatically when 90 seconds has
passed without any key operation. In this case, the chamber temperature setting is not accepted.
The available set range of chamber temperature is between 2 oC and 23 oC. The partial freezing may
occurred if the set temperature is lower than 3 oC.
KEY LOCK FUNCTION
This unit is provided with a key lock function. When the key lock is ON, change of temperature setting
through the key pad is not available. The key lock is set in OFF at the factory.
Display Mode Function
L 0 Key lock is OFF Enable to change of temperature setting
L 1 Key lock is ON Disable to change of temperature setting
Table 2 Procedure for key lock setting (change from key lock OFF to key lock ON)
Description of operation Key operated Indication after operation
1 ---- The current chamber temperature is
displayed.
2 Press digit shift key for 5 seconds. The first digit is flashed.
3 Press numerical value shift key and
scroll the figure to 1. When pressed, the figure of settable
digit changes.
4 Press set key. SET
The key lock is set to ON.
The current chamber temperature is
displayed.
17
ALARM TEMPERATURE SETTING
This unit is provided with both high and low temperature alarms. The temperature at which the alarm is
activated can be changed.
The available set range for high temperature alarm is between +2 oC and +14 oC and -2 oC and -14 oC for
low temperature alarm against the chamber set temperature.
Note: The temperature alarm is set at ±5 oC of the set temperature at the factory.
As an example, Table 3 shows the procedure to set the high temperature alarm so that the alarm can
activate when the chamber temperature is 3 oC higher than the set temperature.
Table 4 shows the procedure to set the low temperature alarm so that the alarm can activate when the
chamber temperature is -3 oC lower than the set temperature.
Table 3 Procedure for setting high temperature alarm (Change from 5 oC to 3 oC)
Description of operation Key operated Indication after operation
1 ---- The current chamber temperature is
displayed.
2 Press numerical value shift key for
5 seconds.
The first digit is flashed.
3 Press numerical value shift key and
scroll the figure to 1.
When pressed, the figure of settable
digit changes.
4 Press set key. SET The first digit is flashed.
5
Set the temperature to 003 with the
digit shift key and numerical value
shift key.
Pressing the key shifts the digit which
can be set.
When pressed, the figure of settable
digit changes.
6 Press set key. SET
Alarm temperature is memorized and
the current chamber temperature is
displayed.
Table 4 Procedure for setting low temperature alarm (Change from -5 oC to -3 oC)
Description of operation Key operated Indication after operation
1 ---- The current chamber temperature is
displayed.
2 Press numerical value shift key for
5 seconds.
The first digit is flashed.
3 Press numerical value shift key and
scroll the figure to 2.
When pressed, the figure of settable
digit changes.
4 Press set key. SET The first digit is flashed.
5
Set the temperature to -03 with the
digit shift key and numerical value
shift key.
Pressing the key shifts the digit which
can be set.
When pressed, the figure of settable
digit changes.
6 Press set key. SET
Alarm temperature is memorized and
the current chamber temperature is
displayed.
The alarm temperature set mode returns to the temperature display mode automatically when 90 seconds
has passed without any key operation.
18
SETTING OF DELAY OF DOOR ALARM
The door alarm lamp (DOOR) is lit when the door is opened, and the alarm buzzer sounds with some
delay to notice the door opening.
The delay time (between lighting of the door alarm lamp and activation of the alarm buzzer) can be
changed. Set an appropriate delay time according to the condition of use to prevent the rise of chamber
temperature resulting from inadequate door close.
Setting range of delay time: between 1 minute and 15 minutes
Initial setting (factory setting): 2 minutes
Table 5 Procedure for setting of delay of door alarm (Change the delay time to 3 minutes from 2
minutes)
Description of operation Key operated Indication after operation
1
----- The current chamber temperature is
displayed.
2 Press numerical value shift key for
5 seconds.
F00 is displayed and the first digit
flashed.
3 Press numerical value shift key
4 times.
The display is changed to F04 from
F00.
4 Press set key. SET The current setting (002) is displayed
and the first digit flashed.
5 Press numerical value shift key and
scroll the figure to 003. The display is changed to 003 from
002.
6 Press set key. SET
Door alarm delay time is memorized
and the current chamber temperature
is displayed.
Note:
The door alarm delay time set mode returns to the temperature display mode automatically when 90
seconds has passed without any key operation.
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