2
CONTENTS
INTRODUCTION ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 3
PRECAUTIONS FOR SAFE OPERATION ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 4
SYMBOLS ON UNIT ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 9
ENVIRONMENTAL CONDITIONS ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 9
FREEZER COMPONENTS ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 10
Control panel ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 12
INSTALLATION SITE ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 13
INSTALLATION ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 14
START-UP OF UNIT ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 16
TEMPERATURE SETTING ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 17
KEY LOCK FUNCTION ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 17
ALARM TEMPERATURE SETTING ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 18
SETTING OF ALARM DELAY TIME ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 19
SETTING OF ALARM RESUME TIME ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 20
SETTING OF ALARM BUZZER INTERLOCK MODE ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 21
CHANGE OF COMPRESSOR DELAY TIME ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 22
DURING/AFTER POWER FAILURE ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 23
REMOTE ALARM TERMINAL ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 23
ALARMS & SAFETY FUNCTIONS ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 24
ROUTINE MAINTENANCE ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 25
Cleaning the exterior, interior, and accessories ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 25
Defrosting ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 25
CALIBRATION ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 26
REPLACEMENT OF WORN-OUT PARTS ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 26
Replacement of the battery for the power-failure alarm ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 26
Replacement of the fan motor ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 26
TROUBLESHOOTING ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 27
DISPOSAL OF UNIT ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 28
Recycle of battery ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 28
Refrigerant
ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 28
Decontamination of unit ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 28
TEMPERATURE RECORDER (OPTION) ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 33
SPECIFICATIONS ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 34
PERFORMANCE ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 35
SAFETY CHECK SHEET ꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏꞏ 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. Ltd. shall not be responsible for any loss or damage to the contents of the product.
<Intended Use>
This equipment is designed for low temperature storage of biomedical samples.
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 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.
Turn the leveling feet to separate the casters from the floor and secure the unit. If they are left
touching the floor, the unit may inadvertently move out of position when its door is opened or closed. It
may cause injury.
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 electrical 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 (ground) the unit 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 the unit, 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 supply 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 the 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 yourself. 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 a branch circuit-breaker.
Use a dedicated power source as indicated on the rating label attached to the unit. A
multiple-tap source may cause fire due to excessive 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
Never store corrosive substances such as acids or alkalis in this unit except in a sealed
container. These may be harmful to your health and may cause corrosion of internal components or
electrical parts.
Check the settings when restarting operation after a power failure or after turning the power off.
The settings may have changed as a result of stopping the unit. Stored items inside the unit may be
adversely affected when operation is resumed if the settings have changed.
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
Do not touch the power supply joint of the temperature recorder(option). It may cause electric
shock.
To prevent frostbite, wear protective gloves when handling frozen items in the chamber. Too
much frost may cause chamber temperature rise resulting from incomplete door close.
CAUTION
9
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.
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 (POLLUTION DEGREE 2 in most cases)
10
FREEZER COMPONENTS
Back side
Space for
interface board
MDF-MU539
9
13
MDF-MU339
11
10
14
Right side
4
8
7
12
6
5
3
1
2
Drain port
(Bottom of cabinet)
4
3
8
1
2
6
5
7
Drain port
(Bottom of cabinet)
Storage
contaner
Storage
contaner
11
FREEZER COMPONENTS
1. Lock: Turn counterclockwise to 180 o with a key and the outer door is securely locked.
2. Door: To open the door, grip the handle.
3. Handle: Always grip this handle to open and close the outer door.
4. Space for temperature recorder: A temperature recorder (optional component) can be attached here.
See page 33 “TEMPERATURE RECORDER”.
5. Levelling feet <bottom>: 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 2 front casters are away from the floor
See page 14.
6. Caster: 4 casters are provided to facilitate moving of the cabinet. For the installation, adjust the
leveling feet so that the front 2 casters cannot contact with the floor.
7. Door latch: To lock the outer door, turn this latch downward. To unlock, rotate this latch up. A padlock
is also available.
8. Control panel: To display the temperature setting and running condition. See page 12.
9. Drain hose <Right side>: The drain hose can be used to collect the defrosted water. See page 25.
10. Fixture (on back side): 2 fixtures are provided as spacers between the cabinet and wall and also
serve as hooks to fix the unit. See page 14.
11. Power Supply cord: When you connect the power supply plug to the power supply outlet, the
main unit turns on.
12. Access port: This is used for leading the measuring cable from the freezing chamber to the outside.
13. Battery switch: Switch for battery used for power failure alarm. Always keep “ON”. Turn the
switch “OFF” when the unit is in no use for a long period (more than 1 month).
14. Remote alarm terminal: Used to notify an alarm condition of the unit to remote location. See page
23 “REMOTE ALARM TERMINAL”.
12
FREEZER COMPONENTS
Control panel
1. Alarm indicator (ALARM): This lamp is flashed when the audible alarm is activated.
2. Digital temperature indicator: Normally, the current chamber temperature is displayed in the
temperature display. When the high/low temperature alarm is activated, the current chamber temperature
blinks. When the self-diagnostic function detects an abnormality, the error code is displayed. See page
24.
3. Numerical value shift key ( ): Pressing this key in the setting mode causes the numerical value to
shift. ON-OFF of key lock can be selected by pressing this key in the key lock mode.
4. Digit shift key ( ): Pressing this key in the setting mode causes the changeable digit to shift. Key
lock mode is led by pressing this key for more than 5 seconds in the temperature display mode.
5. Set key (SET): Temperature setting mode is led by pressing this key. Once the key is pressed, the
changeable digit is flashed. Pressing this key again after setting desired temperature, the setting is
stored into computer memory. If there is no key operation for 90 seconds during the setting mode, the
setting mode is invalid automatically.
6. Defrost key (DEF): When removing the frost, press this key for 5 seconds. The freezer operation is
stopped. After removing the frost, press this key again. See page 25.
Note: The freezing operation never resumes automatically after defrosting.
7. Buzzer stop key (BUZZER): To silence the audible alarm, press this key.
8. Alarm test key (ALARM TEST): Test key for alarm device. By pressing this key, the alarm lamp is
flashed, remote alarm is activated and buzzer sounds. This means all alarm function operate correctly.
8 7 6 5 4 3
1 2
13
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, top and
back). 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. The ambient temperature to use is +5 oC degrees to +35 oC degrees for
MDF-MU339, +5 oC degrees to +30 oC degrees for MDF-MU539.
■ 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 unnecessary vibration or 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 the electrical parts may cause the 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.
14
INSTALLATION
When installing the unit, follow the steps below to secure the unit properly, and also be absolutely sure to
earth the unit.
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 bands 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. Fixing the unit
Two fixtures are attached to the rear of the frame. Fix the
frame to the wall with these fixtures and rope or chain.
(Fig. 2)
4. Ground (earth)
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.
• If the power supply outlet is not grounded, it will be necessary to install a ground by qualified
engineers.
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.1
Levelling feet
Fixture Fig. 2
15
INSTALLATION
5. Installation of shelves
The shelves are packaged all together in the chamber. Fix the shelves on the shelf stoppers securely
before start-up of the unit.
• Incomplete installation may cause injury or damage.
The shelf stoppers are attached to the standard location. Change the location of shelf stopper as
necessary.
Shelf stopper
16
START-UP OF UNIT
Use the following procedure to start trial operation or actual operation of the unit.
1. In the empty state, power supply plug the plug into a power supply outlet. Confirm that the temperature
display on the control panel is blinking.
2. 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.
3. Set the desired chamber temperature. See page 17 for the temperature setting.
4. Check that the chamber temperature reaches the desired temperature.
5. Make sure that the alarm lamp flashes and the buzzer sounds by pressing the alarm test key (ALARM
TEST). The remote alarm is also operated. E09 is displayed on the digital temperature indicator and
buzzer sounds if the battery switch is off. Make sure to turn on the battery switch.
6. After confirming the above, you can put articles into the biomedical freezer chamber in a small batch to
prevent the temperature rise.
Note:
■ When starting the operation of the biomedical freezer for the first time, the alarm lamp (ALARM) lights.
When the chamber temperature reaches around the set temperature, then the alarm lamp goes out (The
remote alarm is activated).
■ If the battery switch is turned on before turning on the power of the biomedical freezer, the temperature
alarm is activated and the buzzer sounds and the remote alarm is also activated. Check that the battery
switch is off before turning on the biomedical freezer.
17
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 -25 oC.
Note: The chamber temperature is set to -30 oC at the factory.
Table 1. Basic operation sequence (Example: Chamber temperature -25 oC)
Description of operation Key operated Indication after operation
1 Connect the power supply plug. ― The current chamber temperature is
displayed.
2 Press set key. SET The second digit is flashed.
3 Set to -25 with the numerical value
shift key and digit shift key.
When pressed, the settable digit is
shifted.
When pressed, the figure of
settable digit changes.
4 Press set key. SET
Set temperature is memorized and the
current chamber temperature is
displayed.
• The chamber temperature can be set within the range of -35 °C to -18 °C. For MDF-MU339, the ambient
temperature is 35 °C and the guaranteed temperature is -30 °C at no load. In the case of MDF-MU539, the
ambient temperature is 30 °C and the guaranteed temperature is -30 °C at no load.
• The setting mode returns to the temperature display mode automatically when 90 seconds has passed
without any key operation. In this case, any setting before pressing set key (SET) is not memorized.
KEY LOCK FUNCTION
This unit is provided with the key lock function. When the key lock is ON, change of temperature setting
through the key pad is not possible. The key lock is set to OFF at the factory.
Display Mode Function
L 0 Key lock is OFF Enable to change temperature setting
L 1 Key lock is ON Disable to change 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 display changes to L 0 and the
first digit blinks.
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.
• The setting mode returns to the temperature display mode automatically when 90 seconds has passed
without any key operation. In this case, any setting before pressing set key (SET) is not memorized.
18
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 high temperature alarm can be set to a temperature of + 5 °C to + 15 °C.
The low temperature alarm can be set to a temperature between -15 °C and -5 °C.
Note: The temperature alarm is set at ±10 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 5 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 5 oC lower than the set temperature.
Table 3. Procedure for setting high temperature alarm
Description of operation Key operated Indication after operation
1 ― ― The current chamber temperature is
displayed.
2 Press numerical value shift key for
about 5 seconds.
The display changes to F00 and
the first digit blinks.
3
Set the figure to F01 by using
digit shift key and numerical value
shift key
When pressed, the figure of
settable digit changes.
4 Press set key. SET The current setting is displayed and
the first digit is flashed.
5
Set the figure to 005 by using
digit shift key and numerical value
shift key
When pressed, the settable digit is
shifted.
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
Description of operation Key operated Indication after operation
1 ― ― The current chamber temperature is
displayed.
2 Press numerical value shift key for
about 5 seconds.
The display changes to F00 and
the first digit blinks.
3
Set the figure to F02 by using
digit shift key and numerical value
shift key
When pressed, the figure of
settable digit changes.
4 Press set key. SET The current setting is displayed and
the first digit is flashed.
5
Set the figure to -05 by using
digit shift key and numerical value
shift key
When pressed, the settable digit is
shifted.
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 setting mode returns to the temperature display mode automatically when 90 seconds has passed
without any key operation. In this case, any setting before pressing set key (SET) is not memorized.
19
SETTING OF ALARM DELAY TIME
The delay time of the buzzer and remote alarm for high and low temperature alarm can be set between 0
and 15 minutes. The procedure in table 5 shows the sequence to set the delay time to 10 minutes. The
delay time is set to 15 minutes at the factory.
Table 5 Setting procedure for alarm delay time (change from 15 minutes to 10 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. The display changes to F00 and
the first digit blinks..
3
Set the figure to F50 by using
digit shift key and numerical value
shift key
When pressed, the settable digit is
shifted.
When pressed, the figure of
settable digit changes.
4 Press set key. SET The current delay time is displayed.
The first digit is flashed.
5 Set the figure to 010 with the
numerical value shift key. When pressed, the figure of settable
digit changes.
6 Press set key. SET
The delay time is memorized and
the current chamber temperature is
displayed.
• The alarm delay time set mode returns to the temperature display mode automatically when 90 seconds
has passed without any key operation.
20
SETTING OF ALARM RESUME TIME
The buzzer is cancelled by pressing buzzer stop key (BUZZER) on the control panel during alarm condition.
However, if the alarm condition is continued after the “alarm resume time” has passed, the buzzer sounds
again.
It is possible to change the alarm resume time by the procedure shown in the Table.6.
The example in the table is based on the assumption that the desired duration is 20 minutes.
Note: Factory setting; 30 minutes.
Table 6. Setting procedure for alarm resume time (change from 30 minutes to 20 minutes)
Description of operation Key operated Indication after operation
1 ― ― The current chamber temperature is
displayed.
2 Press digit shift key for 5 seconds.
The display changes to F00 and
the first digit blinks..
3
Set the figure to F25 by using
digit shift key and numerical value
shift key
When pressed, the settable digit is
shifted.
When pressed, the figure of settable
digit changes.
4 Press set key. SET The current resume time is displayed.
The second digit is flashed.
5 Set the figure to 020 with the
numerical value shift key.
When pressed, the figure of
settable digit changes.
6 Press set key. SET The setting is memorized and
the current chamber temperature is
displayed.
• The settable alarm resume time are 10, 20, 30, 40, 50, or 60 minutes. The buzzer would not resume if
the resume time is set in 000.
• The setting mode returns to the temperature display mode automatically when 90 seconds has passed
without any key operation. In this case, any setting before pressing set key (SET) is not memorized.
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Phcbi MDF-MU539 Instrucțiuni de utilizare
- Tip
- Instrucțiuni de utilizare
- Acest manual este potrivit și pentru
în alte limbi
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