Sanyo MPR-721 User manual

INSTRUCTION MANUAL
MPR-721
MPR-721 R
Pharmaceutical Refrigerator
MPR-721 R

CONTENTS
INTRODUCTION P. 2
PRECAUTIONS FOR SAFE OPERATION P. 3
ENVIRONMENTAL CONDITIONS P. 7
REFRIGERATOR COMPONENTS P. 8
Inside of front panel P. 10
Control panel P. 11
INSTALLATION SITE P. 12
INSTALLATION P. 13
START-UP OF UNIT P. 14
STOCK OF CONTAINERS P. 15
CHAMBER TEMPERATURE SETTING P. 16
KEY LOCK FUNCTION P.16
ALARM TEMPERATURE SETTING P. 17
SETTING OF DELAY OF DOOR ALARM P. 18
SETTING OF RINGBACK OF ALARM BUZZER P. 19
OPERATION CHECK AFTER RECOVERY P. 19
DEFROST CYCLES P. 20
REMOTE ALARM TERMINAL P. 20
ALARMS & SAFETY FUNCTIONS P. 21
ROUTINE MAINTENANCE
Cleaning of cabinet P. 22
Cleaning of evaporating tray P. 22
Replacement of fluorescent lamp P. 23
Replacement of glow starter P. 23
TROUBLESHOOTING P. 24
DISPOSAL OF UNIT P. 25
OPTIONAL COMPONENTS
Automatic temperature recorder P. 30
Attachment of recorder MTR-0621LH P. 31
Attachment of recorder MTR-G04A or MTR-G04C P. 32
Attachment of battery kit MPR-48B P. 33
Attachment of interface board MTR-480C P. 34
Setting for battery before starting P. 35
SPECIFICATIONS P. 36
PERFORMANCE P. 36
SAFETY CHECK SHEET P. 37
1
- 39 -

INTRODUCTION
■ Read this manual carefully before using the appliance and follow the instructions for safety operation.
■ Sanyo never guarantee any safety if the appliance is used for any objects other than intended use or
used by any procedures other than those mentioned in this manual.
■ Keep this manual in an adequate place to refer to it as necessary.
■ The contents of the manual will be subjected to change without notice due to the improvement of
performance or functions.
■ Contact Sanyo sales representative or agent if any page of the manual is lost or page order is incorrect.
■ Contact Sanyo sales representative or agent if any point in this manual is unclear or if there are any
inaccuracies.
■ No part of this manual may be reproduced in any form without the expressed written permission of
Sanyo.
— 40 —
2

PRECAUTIONS FOR SAFE OPERATION
It is imperative that the user complies with this manual 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.
Acaution
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 this manual 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 a service personnel only.
- 41 —

PRECAUTIONS FOR SAFE OPERATION
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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.
- 42 —
4

PRECAUTIONS FOR SAFE OPERATION
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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 supply cord if its plug is loose. Such 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.
When removing the 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
cord. A damaged cord may cause electric shock or fire.
Disconnect the power 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.
5
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PRECAUTIONS FOR SAFE OPERATION
ACAUTION
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Use a dedicated power source (a dedicated circuit with a breaker) as indicated on the rating label
attached to the unit. A branched circuit may cause fire resulting from abnormal heating.
Connect the power supply plug to the power source firmly after removing the dust on the plug.
A dusty plug or improper insertion may cause a heat or ignition.
Never store corrosive substances such as acid or alkali in this unit if the container cannot be
sealed. These may cause corrosion of inner components or electric parts.
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.
- 44
6

ENVIRONMENTAL CONDITIONS
This equipment is designed to be safe at least under the following conditions (based on the IEC 61010-1):
1. Indoor use;
2 . Altitude up to 2000 m;
3. Ambient temperature 5°C to 40°C
4 . Maximum relative humidity 80% for temperature up to 31 °C decreasing linearly to 50% relative
humidity at 40°C;
5 . Mains supply voltage fluctuations not to exceed ±10% of the nominal voltage;
6. Other supply voltage fluctuations as stated by the manufacture;
7. Transient overvoltages according to Installation Categories (Overvoltage Categories) II; For mains
supply the minimum and normal category is II;
8. Pollution degree 2 in accordance with IEC 60664.
7
— 45

REFRIGERATOR COMPONENTS
1. Front cover: Open this cover when connecting the remote alarm or replacing glow stater 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 automatic temperature recorder: An automatic temperature recorder (optional
component) can be mounted here. See page 28.
5. Fluorescent lamp: 20 W lamp. See page 21 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 180° 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-721 R 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 20 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 for power failure alarm MPR-48B (option): MPR-48B (option) is installed. See page 31.
9
— 47

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 21.
2. Remote alarm terminal: This is used to connect the unit to an exterior alarm to notify users of any
malfunction. Refer to page 18.
— 48 -
10

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 mode. See page
16.
5. Digit shift key ( ► ► ): Pressing this key in the set mode alters the digit to be set. Key lock is
available by pressing this key for more than 5 seconds in the temperature display mode. See page 16.
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.
7. Alarm buzzer stop key (BUZZER): To silence the audible alarm, press this key. Press it once
again to reactivate the alarm.
11
— 49

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 and
+35°C.
■ 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. _
A 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 flammable or volatile location. 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.
50 -
12

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.
2. Adjusting the leveling feet
Extend the leveling feet by rotating them
counterclockwise to contact them to the floor.
Ensure the unit is level. 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.
If holes can be drilled in the wall, drill a 10.5 mm
diameter hole (Fig. 2) and fix the unit by using the
special bolt-nut supplied. This bolt-nut can only be
used on a concrete wall.
4. G round (earth)
The ground (earth) is for preventing the electric shock in the case of the electrical insulation is somehow
d egraded. 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.
13
51 -

START-UP OF UNIT
Follow the procedures for the initial and consequent operations of the unit.
1. C onnect the power cord to the dedicated outlet with appropriate rating.
Acaution
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°C.
4. Allow the chamber temperature to fall to 5°C. Check the chamber temperature on the temperature
indicator.
5. Turn on the fluorescent 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.
1 (at ambient temperature of 35°C)
Heat load in chamber
Lowest chamber temperature
100 W
2°C
200 W
9°C
300 W
18°C
— 52 —
14

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°C.
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. __
Fan Air exhaust vent
Side view
15
- 53 -

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°C.
Note: The unit is set at the factory with a chamber temperature of 5°C.
Table 1 Basic operation sequence (Example: Chamber set temperature 4°C)
Description of operation
Key operated
Indication after operation
1
Turn the power switch ON.
—
The current chamber temperature is
displayed.
1
2
0
2
Press set key.
SET
The first digit is flashed.
m
m a
" ■ v
Press numerical value shift key and
When pressed, the figure of settable
digit increases.
3
1
0 0 4
scroll the figure to 4.
Set temperature is memorized and the
current chamber temperature is
4
Press set key.
SET
2
0
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 and 23°C. The partial freezing may
occurred if the set temperature is lower than 3°C.
KEY LOCK FUNCTION
This unit is provided with a key lock function. When the key lock is ON, change of temperature setting
Display
Mode
Function
L0 Key lock is OFF
Enable to chanqe of temperature setting
LI
Key lock is ON
Disable to chanqe 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.
mm
_
□
Ej
■
2
Press digit shift key for 5 seconds.
► ►
VP1
The first digit is flashed.
g
■ ■
MSB!
3
Press numerical value shift key and
scroll the fiqure to 1.
1
When pressed, the figure of settable
digit increases.
i
■
B
The key lock is set to ON.
4
Press set key.
SET
The current chamber temperature is
H
displayed.
_ _ L
— 54 —
16

ALARM TEMPERATURE SETTING
This unit is provided with both high and low temperature alarms. The temperature at which the alarm is
activated may be changed.
The available set range for high temperature alarm is between +2°C and +14°C and -2°C and -14°C for
low temperature alarm against the chamber temperature.
Display
Mode
Function
F01
High temperature alarm set
See Table 5 on page 19
F02
Low temperature alarm set
See Table 5 on page 19
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°C 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°C lower than the set temperature.
Table 3 Procedure for setting high temperature alarm
Description of operation
Press numerical value shift key for
2
_ 5 seconds. _
^ Press numerical value shift key and
_ s croll the figure to 1. _
Press set key.
4
Set the temperature to 003 with the
5 digit shift key and numerical value
shift key.
6 Press set key.
Key operated _ Indication after operation
The current chamber temperature is
_ d isplayed. _
^ The first digit is flashed.
t W hen pressed, the figure of settable
_ d igit increases. _
The first digit is flashed.
oh I
Pressing the key shifts the digit which
can be set. _
t W hen pressed, the figure of settable
_ d igit increases. ____
Alarm temperature is memorized and
SET the current chamber temperature is
displayed.
Table 4 Procedure for setting low temperature alarm
Description of operation
^ Press numerical value shift key for
5 seconds. _
3 Press numerical value shift key and
scroll the figure to 2. _
4 Press set key.
Set the temperature to -03 with the
5 digit shift key and numerical value
shift key.
6 Press set key.
Key operated
_ Indication after operation
The current chamber temperature is
displayed. _
The first digit is flashed.
When pressed, the figure of settable
digit increases. _
The first digit is flashed.
Pressing the key shifts the digit which
can be set. _
When pressed, the figure of settable
digit increases. _
Alarm temperature is memorized and
the current chamber temperature is
displayed.
17
— 55 -

SETTING OF DELAY OF DOOR ALARM
The door check indicator is light 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 check indicator 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: 1 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 min. from 2
min ) ___
Description of operation Key operated
Indication after operation
1
The current chamber temperature is
displayed.
4
2 Press up arrow key for 5 seconds.
1
F00 is displayed and the first digit
blinks.
F00
'IV
3
Press up arrow key 4 times.
1
The display is changed to F04 from
F00.
F0H
4 Press set key.
SET
The current setting (002) is displayed
and the first digit blinks.
0133
5
Press up arrow key and scroll the
figure to 3.
i
The display is changed to 003 from
002.
\l/
003
✓ iv
6
Press set key. SET
Delay time is memorized and the
current chamber temperature is
displayed.
4
Note:
The setting mode returns to the temperature display mode automatically when 90 seconds has passed
without any key operation (auto-return function). In this case, the setting is not accepted.
— 56 —
18

SETTING OF RINGBACK OF ALARM BUZZER
The alarm buzzer operates again after certain period (ringback time) even if the alarm buzzer is silenced
by pressing the alarm buzzer stop key (BUZZER) when the same alarm status is continued. Set the
ringback time to prevent the misidentify the alarm status.
■ Setting range of ringback time: between 10 and 60 minutes (10 minutes interval)
Display of setting: between 010 and 060 (000 display shows no ringback)
■ Initial setting (factory setting): 30 minutes
The alarm buzzer will not recover once the alarm buzzer is silenced by pressing the alarm buzzer stop
key (BUZZER) when the ringback time is set to 000. However, the alarm buzzer will operate if other
alarm status is detected.
Table 6 Procedure for setting of ringback of alarm buzzer (Change the ringback time to 20 min.
from 30 min.) ___
Description of operation
Indication after operation
1
—
The current chamber temperature is
displayed.
w
2
Press up arrow key for 5 seconds.
t
F00 is displayed and the first digit
blinks.
F00
3
Press up arrow key 5 times.
t
The display is changed to F05 from
F00.
si/
F0S
/|V
D
Press scroll key once.
► ►
The second digit blinks.
si/
F 05
/is
5
Press up arrow key twice.
1
The display is changed to F25 from
F05.
si/
F0 5
7TK
6
Press set key.
SET
The current setting (030) is displayed
and the second digit blinks.
sl/
030
/|V
B
Press up arrow key and scroll the
figure to 2.
i
The display is changed to 020 from
030.
\l/
000
8 Press set key.
SET
Ringback time is memorized and
the current chamber temperature is
displayed.
Note:
■ The setting mode returns to the temperature display mode automatically when 90 seconds has passed
without any key operation (auto-return function). In this case, the setting is not accepted.
■ The setting should be performed during normal operation, not during alarm status.
OPERATION CHECK AFTER RECOVERY
After recovery from a power failure, the unit will resume operation automatically with the setting before
power failure. Accordingly, there is no need for re-set however, always check the running status after
recovery.
■ The set value is memorized by nonvolatile memory during power failure.
19
- 57 —