2
CONTENTS
INTRODUCTION ······································································ 3
PRECAUTIONS FOR SAFE OPERATION ······································ 4
ENVIRONMENTAL CONDITIONS ················································ 7
REFRIGERATOR COMPONENTS
Refrigerator unit ··································································· 8
Control panel components ···················································· 10
INSTALLATION SITE ······························································ 11
INSTALLATION ······································································ 12
START-UP OF UNIT ······························································· 13
CAUTIONS FOR USAGE ························································· 13
CHAMBER TEMPERATURE SETTING ······································· 14
LOCK OF CHAMBER TEMPERATURE ······································· 15
DEFROST OF EVAPORATOR ·················································· 16
ALARM TEMPERATURE SETTING
Setting of high temperature alarm ·········································· 17
Setting of low temperature alarm ············································ 18
SETTING OF DELAY OF DOOR ALARM ····································· 19
SETTING OF RINGBACK OF ALARM BUZZER ···························· 20
OPERATION CHECK AFTER RECOVERY ·································· 20
REMOTE ALARM TERMINAL ··················································· 21
ALARM FUNCTIONS ······························································· 22
Air circulation alarm ···························································· 22
SELF DIAGNOSTIC FUNCTIONS ·············································· 23
SAFETY FUNCTIONS ····························································· 23
ROUTINE MAINTENANCE
Cleaning of exterior, interior, and accessories ··························· 24
Replacement of fluorescent lamp ··········································· 25
Replacement of glow starter ·················································· 25
Cleaning of evaporating tray ················································· 26
TROUBLESHOOTING ····························································· 27
DISPOSAL OF UNIT ······························································· 28
Decontamination of unit ······················································· 28
TEMPERATURE RECORDER ··················································· 33
INSTALLATION OF TEMPERATURE RECORDER
Attachment of MTR-0621LH ·················································· 34
Attachment of MTR-G04A or MTR-G04C ································· 36
BATTERY FOR POWER FAILURE ALARM ·································· 38
SETTING FOR BATTERY BEFORE STARTING ···························· 40
SPECIFICATIONS ·································································· 41
PERFORMANCE ···································································· 42
SAFETY CHECK SHEET·························································· 43
3
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.
4
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.
< Labels 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.
This symbol indicates that caution is required. Refer to product documentation for details.
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.
5
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
6
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 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.
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
7
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.
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 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.
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);
CAUTION
8
REFRIGERATOR COMPONENTS
Refrigerator unit
15
14
15
1 2
3
MPR-514R
5
6
4
7
9
8
10
11
12
13
9
REFRIGERATOR COMPONENTS
1. Control panel: The chamber temperature and alarms can be set through the keys on the control
panel. The temperature display and indicators are also provided on the control panel. Refer to page 10
for details.
2. Light switch: This switch is used for turning the fluorescent lamp off and on.
3. Door switch: This switch detects the door status (open/close). The door check lamp is ON when
the door is open.
4. Door: Sliding type. The recessed portion on the rail enables the self-closing of the door. The glass
is pair construction.
The condensation may be found on the door frame with ambient humidity of about 50%R.H. and on the
glass surface with ambient humidity of about 60%R.H. This is not a malfunction.
The condensation on the door is dropped on the rail and exhausted to the evaporating tray.
5. Air exhaust vent: Do not block this vent. Arrange the stored items not to subject to the cold air
from the vent.
6. Drawer (Right side of MPR-514R): To pull out the drawer, take out the drawer with pushing the
button at the bottom of the drawer.
Note: Never pull out the multiple drawers at a time. It may cause tipping over of the unit.
7. Air intake vent (front bottom): Do not block this vent. Blocking this vent may cause unstable
chamber temperature. Do not insert fingers or similar articles into the vent.
8. Space for a temperature recorder: A temperature recorder (optional accessory) can be mounted
here. See page 33.
For the installation, contact our sales representative or agent.
9. Leveling feet (front): These are used for install the unit. Adjust the height of the leveling feet by
turning the screw bolts until 2 front casters are away from the floor.
10. Evaporating tray: Defrost water from the evaporator accumulates in the tray and evaporates into
the atmosphere. See page 26 for cleaning.
11. Shelf: The set location is adjustable.
Items to be stored in the chamber must be placed on the shelves. Do not put stored items directly on
the bottom of the chamber.
12. Access port: This port allows a sensor or cable of measuring equipment to enter the chamber from
outside.
Replace insulation and the rubber caps when the access port is not used. Improper replacement may
cause rise of chamber temperature or condensation around the access port.
13. Exclusive alarm sensor: A sensor for detecting the temperature rise at the upper area of the
chamber. Refer to page 22 for alarm functions.
14. Back spacer (also used as a fixture): To keep the space between the unit and the back wall for
adequate cooling performance. And this can be used as a fixture. Fix the unit by using the fixture and
a rope or chain.
15. Circuit breaker switch: Switch ON this circuit breaker switch before the unit starts to run. When
the operation of the unit is stopped by the circuit breaker, contact our sales representative or agent after
disconnecting the power supply plug.
10
REFRIGERATOR COMPONENTS
Control panel components
1. Door check indicator (DOOR): The red LED lamp is lit when the door is opened.
2 minutes after the door check indicator ON, the buzzer is activated to notice the door opening.
2. Alarm indicator (ALARM): The red LED lamp blinks during an alarm condition. See page 22.
3. Temperature display: Normally shows the present chamber temperature and during an alarm
condition, shows an error code. See page 23.
4. Up arrow key ( ):
At “temperature display mode”; pressing this key for more than 5 seconds leads setting mode.
At “setting mode”; increases number values between choices. See page 14 to 15 and page 17 to 20.
At “setting of lock function”; selects ON-OFF of key lock for chamber temperature setting. See page 15.
5. Scroll key ( ):
At “temperature display mode”; pressing this key for more than 5 seconds leads “setting of lock function”.
See page 15.
At “setting mode”; moves the operator through digit on the display. See page 14 to 15 and page 17 to
20.
6. Set key (SET):
At “temperature display mode”; pressing this key leads “chamber temperature setting mode”.
At “setting mode”; stores the value into computer memory.
7. Alarm buzzer stop key (BUZZER): Mutes the audible alarm.
“temperature display mode”: the status which the temperature display shows the current chamber
temperature
“setting mode”; the status which the temperature display is ready to be entered after pressing the up
arrow key for 5 seconds.
7 6 5 4
3 2 1
DOOR ALARM TEMPERATURE(oC)
BUZZE
R
SET
11
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 compliance with the following conditions may cause poor performance, failure or
accident.
A location not subjected to direct sunlight
Do not install the unit under direct sunlight. Installation in a location subjected to direct sunlight may
degrade the 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. Installing the unit under unstable ambient temperature
may result in unstable performance.
A location with a sturdy and level floor
Always install the unit on a sturdy and level floor withstanding the total weight of the unit. The uneven
floor or tilted installation may cause failure or injury. Unstable condition may cause vibration or noise.
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.
CAUTION
The unit may collect excessive frost on the evaporator if it is installed in high temperature and high
humidity location. This will cause frequent defrosting.
A location without flammable or corrosive gas
Never install the unit in a flammable or corrosive location. This may cause explosion or fire or may result
in the current leakage or electric shock by the corrosion of the electrical components.
CAUTION
Never install the unit in a location where the corrosive material such as sulfur compound is likely
to be generated (near a drainage facilities, etc). Corrosion of the copper pipe may result in
deterioration of cooling unit and consequently the failure.
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.
12
INSTALLATION
1. After unpackaging
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. Installing the unit
Extend the leveling feet by rotating them to separate 2
front casters from the floor. [Fig. 1]
And adjust the leveling foot to level the unit.
3. Fixing the unit
Fix the unit to the wall by using 2 back spacers [Fig. 2] and
a rope or chain.
The back spacers (which are also used to prevent the unit from
toppling over) have a dual purpose: To provide a clearance
between the unit and the wall behind it, and to prevent the unit
toppling over.
4. Ground (earth) the unit
The ground (earth) is for preventing the electric shock in
the case of the electrical insulation is somehow degraded.
Always ground the unit at the time of installation.
A 3-prong plug with grounding pole is provided to the
poser supply cord. There is no need for electric work for
grounding.
If the power supply outlet is not grounded, it will be
necessary to install a ground by qualified engineers.
Leveling foo
t
Fig. 1
Fig. 2
Back spacer
13
START-UP OF UNIT
Follow the procedures for the initial and consequent operations of the unit.
At the recovery after power failure, the operation is start-up automatically with the setting before power
failure. See page 20.
1. Connect the power supply cord to the dedicated outlet with appropriate rating.
<Important>
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 alarm buzzer by pressing
the alarm buzzer stop key (BUZZER). (This is not a malfunction.)
<Important>
Close the door securely. The door check indicator is lit when the door is open. The alarm buzzer
activates when the door is opened for more than 2 minutes. The alarm is canceled when the door is
closed.
3. Allow the chamber temperature to fall to 5 oC (The chamber temperature is set to 5 oC at the factory).
Check the chamber temperature on the temperature display.
4. Switch on the light switch to check the fluorescent lamp is on. After checking, turn off the fluorescent
lamp if the light is not necessary.
5. Set the desired chamber temperature. See page 14.
6. When the chamber temperature gets to the set temperature, begin slowly placing items into the
chamber to minimize the temperature rise.
<Important>
Always put the items on the shelf or in the drawer, not on the bottom of the chamber. Do not contact the
items to the chamber walls.
Do not block the air intake vent nor air exhaust vent. Place the items with adequate space between
them to keep the cool air circulation.
CAUTIONS FOR USAGE
This unit is equipped with a circuit breaker on the back.
Make sure to switch ON this breaker before the unit starts
to run. The figure shows the circuit breaker position.
When the operation of the unit is stopped by the circuit
breaker, contact our sales representative or agent after
disconnected the power supply plug.
Circuit breaker
switch
14
CHAMBER TEMPERATURE SETTING
Set the chamber temperature according to the condition of use. This refrigerator can keep the stored
items for long period under appropriate temperature.
Setting range of chamber temperature: between 2 oC and 14 oC
Initial setting (factory setting): 5 oC
<Important>
The chamber temperature of 2 oC may cause partial freeze of stored items.
Example: Change the chamber temperature to 4 oC from 5 oC
► Following shows a sample setting. Set the desired chamber temperature according to the condition
of use.
Description of operation Key operated Indication after operation
1
Connect the power supply plug to
the dedicated outlet.
(only when start-up of unit)
----- The current chamber temperature is
displayed.
2 Press set key. SET The current setting (005) is displayed
and the first digit blinks.
3 Press up arrow key and scroll the
figure to 4. The display is changed to 004 from
005.
4 Press set key. SET
Set temperature is memorized and
the current chamber temperature is
displayed.
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.
15
LOCK OF CHAMBER TEMPERATURE
The setting of chamber temperature can be protected to avoid an accidental change. When the lock is
ON, change of chamber temperature setting through the key pad is not available.
Initial setting (factory setting): lock OFF
Display Mode Function
L 0 Lock is OFF Enable to change the chamber temperature setting
L 1 Lock is ON Disable to change the chamber temperature setting
Example: Change the lock to ON from OFF (factory setting)
Description of operation Key operated Indication after operation
----- The current chamber temperature is
displayed.
1 Press scroll key for 5 seconds.
The current setting (L 0) is displayed
and the first digit blinks.
2 Press up arrow key once.
The display is changed to L 1 from
L 0.
3 Press set key. SET
Lock status is memorized and the
current chamber temperature is
displayed.
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.
16
DEFROST OF EVAPORATOR
The following 2 kinds of defrost methods are provided with this refrigerator. Both defrost methods are
controlled automatically.
Cycle defrost
To keep the chamber temperature stable, the refrigeration compressor is cycled on and off. During “off”
period any frost which has accumulated on the evaporator is melted by energizing a defrost heater. This
will not have any discernible effect on the chamber temperature.
Forced defrost
When the ambient humidity is high, or a large amount of damp product is being stored inside the chamber,
there is a possibility that cycle defrost may not be enough to remove all of the frost on the evaporator. In
this case, a forced defrost cycle can be initiated.
When the unit is operating under a forced defrost cycle, the current chamber temperature and dF is
displayed alternately on the temperature display.
Once the forced defrost cycle is completed, normal operation resumes.
CAUTION
The unit may collect excessive frost on the evaporator if it is installed in high temperature and high
humidity location. For example, the unit starts to defrost once a week with 2 oC setting in the ambient of
35 oC and 80 %R.H. The chamber temperature goes up to approximately 10oC temporarily during
defrosting.
17
ALARM TEMPERATURE SETTING
Setting of high temperature alarm
By setting the high temperature alarm, the alarm indicator and temperature display blinks and alarm
buzzer operates (after 15 minutes) when the chamber temperature is over the setting of high temperature
alarm. Set the high temperature alarm to protect the stored items against the damage resulting from
temperature rise.
Setting range of high temperature alarm:
Between chamber temperature plus 2 oC and chamber temperature plus 14 oC
Initial setting (factory setting): chamber temperature plus 5 oC
Example: Change the high temperature alarm to chamber temperature plus 3 oC from chamber
temperature plus 5 oC
► Following shows a sample setting. Set the desired high temperature alarm according to the condition
of use.
Description of operation Key operated Indication after operation
1
----- The current chamber temperature is
displayed.
2 Press up arrow key for 5 seconds.
F00 is displayed and the first digit
blinks.
3 Press up arrow key once.
The display is changed to F01 from
F00.
4 Press set key. SET The current setting (005) is displayed
and the first digit blinks.
5 Press up arrow key and scroll the
figure to 3. The display is changed to 003 from
005.
6 Press set key. SET
Set temperature is memorized and
the current chamber temperature is
displayed.
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.
<Important>
The high temperature alarm may be activated after defrosting or a large amount of load is stored in the
chamber. This is not a malfunction. The high temperature alarm is cancelled automatically when the
chamber temperature reaches the set temperature.
18
ALARM TEMPERATURE SETTING
Setting of low temperature alarm
By setting the low temperature alarm, the alarm indicator and temperature display blinks and alarm
buzzer operates (after 15 minutes) when the chamber temperature is below the setting of low
temperature alarm. Set the low temperature alarm to protect the stored items against the damage
resulting from temperature lowering.
Setting range of low temperature alarm:
Between chamber temperature minus 2 oC and chamber temperature minus 14 oC
Initial setting (factory setting): chamber temperature minus 5 oC
Example: Change the low temperature alarm to chamber temperature minus 3 oC from chamber
temperature minus 5 oC
► Following shows a sample setting. Set the desired low temperature alarm according to the condition
of use.
Description of operation Key operated Indication after operation
1
----- The current chamber temperature is
displayed.
2 Press up arrow key for 5 seconds.
F00 is displayed and the first digit
blinks.
3 Press up arrow key twice.
The display is changed to F02 from
F00.
4 Press set key. SET The current setting (-05) is displayed
and the first digit blinks.
5 Press up arrow key and scroll the
figure to 3. The display is changed to -03 from
-05.
6 Press set key. SET
Set temperature is memorized and
the current chamber temperature is
displayed.
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.
<Important>
Regardless of the setting of low temperature alarm, the alarm indicator and temperature display blinks
and alarm buzzer operates if the chamber temperature is lower than 0oC to prevent the stored items from
freezing.
19
SETTING OF DELAY OF DOOR ALARM
The door check indicator lights 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: between 1 minute and 15 minutes
Initial setting (factory setting): 2 minutes
Example: Change the delay time to 3 minutes from 2 minutes
► Following shows a sample setting. Set the desired delay time according to the condition of use.
Description of operation Key operated Indication after operation
1
----- The current chamber temperature is
displayed.
2 Press up arrow key for 5 seconds.
F00 is displayed and the first digit
blinks.
3 Press up arrow 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 blinks.
5 Press up arrow key and scroll the
figure to 3. The display is changed to 003 from
002.
6 Press set key. SET
Delay time is memorized and the
current chamber temperature is
displayed.
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.
20
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 minutes 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.
Example: Change the ringback time to 20 minutes from 30 minutes
► Following shows a sample setting. Set the desired ringback time according to the condition of use.
Description of operation Key operated Indication after operation
1
----- The current chamber temperature is
displayed.
2 Press up arrow key for 5 seconds.
F00 is displayed and the first digit
blinks.
3 Press up arrow key 5 times.
The display is changed to F05 from
F00.
4 Press scroll key once. The second digit blinks.
5 Press up arrow key twice. The display is changed to F25 from
F05.
6 Press set key. SET The current setting (030) is displayed
and the second digit blinks.
7 Press up arrow key and scroll the
figure to 2. The display is changed to 020 from
030.
8 Press set key. SET
Ringback time is memorized and
the current chamber temperature is
displayed.
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.
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