Instruction manual
This section is extracted and printed from Instruction Manual.
If you find out “Refer to page ” in them, this page means not page in Service manual but page in the lower corner of each page in the extract from Instruction Manual.
This page number is not corresponded with serial number in Service manual.
Please note the extracted Instruction Manual which corresponds to the initial unit production, so the contents may be revised in future.
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INSTRUCTION MANUAL
MDF-U500VX MDF-U500VXC
Ultra-Low Temperature Freezer
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CONTENTS
INTRODUCTION |
P. 2 |
PRECAUTIONS FOR SAFE OPERATION |
P. 3 |
ENVIRONMENTAL CONDITIONS |
P. 7 |
FREEZER COMPONENTS |
P. 8 |
Control panel |
P. 10 |
REMOTE ALARM TERMINAL |
P. 11 |
AIR INTAKE PORT |
P. 11 |
INSTALLATION SITE |
P. 12 |
INSTALLATION |
P. 13 |
START-UP OF UNIT |
P. 14 |
Operation after power failure |
P. 14 |
FUNCTION OF CONTROL PANEL |
P. 15 |
BASIC SCREEN OF CONTROL PANEL |
P. 16 |
RUNNING OPERATION (MENU/Set) |
P. 17 |
Chamber temperature setting (Temperature) |
P. 18 |
Alarm temp. setting (High Alarm/ Low Alarm) |
P. 19 |
Alarm delay time setting (Alarm Delay) |
P. 20 |
Ring back of alarm buzzer setting (Ring Back) |
P. 21 |
Key lock function |
P. 22 |
Key lock release function |
P. 23 |
VARIOUS SETTING (MENU/Log) |
|
Display of log (Log) |
P. 24 |
Indication of log and transmission |
P. 25 |
VARIOUS SETTING (MENU/Tools) |
|
Initialization (Tools/ Default Setting) |
P. 27 |
Set of date, time, log interval (Tools/Date Time) |
P. 28 |
Set of door alarm delay time (Tools/Door Delay) |
P. 29 |
Set of log interval (Tools/Log Interval) |
P. 30 |
Change of compressor delay time (Tools/Comp. Delay) |
P. 31 |
Set of key lock password (Tools/Key Lock PW Setting) |
P. 32 |
ALALRM BUZZER |
P. 32 |
MONITOR OF FREEZER STATUS |
P. 33 |
ALARMS & SAFETY FUNCTIONS |
P. 34 |
ROUTINE MAINTENANCE |
|
Cleaning of cabinet |
P. 36 |
Defrosting of inside wall |
P. 36 |
Cleaning of air intake port |
P. 37 |
REPLACEMENT OF BATTERY |
P. 38 |
TROUBLESHOOTING |
P. 39 |
DISPOSAL OF UNIT |
P. 40 |
Recycle of battery |
P. 40 |
TEMPERATURE RECORDER (OPTION) |
P. 45 |
BACK-UP SYSTEM (OPTION) |
P. 47 |
MOUNTING OF INTERFACE BOARD (OPTION) |
P. 48 |
MOUNTING OF LAN INTERFACE BOARD (OPTION) |
P. 49 |
SPECIFICATIONS |
P. 50 |
PERFORMANCE |
P. 51 |
SAFETY CHECK SHEET |
P. 52 |
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1
INTRODUCTION
ŶRead this manual carefully before using the appliance and follow the instructions for safety operation.
ŶSanyo 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.
ŶKeep this manual in an adequate place to refer to it as necessary.
ŶThe contents of the manual will be subjected to change without notice due to the improvement of performance or functions.
ŶContact Sanyo sales representative or agent if any page of the manual is lost or page order is incorrect.
ŶContact Sanyo sales representative or agent if any point in this manual is unclear or if there are any inaccuracies.
ŶNo part of this manual may be reproduced in any form without the expressed written permission of Sanyo.
CAUTION
SANYO guarantees the product under certain warranty conditions. SANYO in no way shall be responsible for any loss of content or damage of content.
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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.
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 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.
WARNING
As with any equipment that uses N2 gas, there is a likelihood of oxygen depletion in the vicinity of the equipment. It is important that you assess the work site to ensure there is suitable and sufficient ventilation. If restricted ventilation is suspected, then other methods of ensuring a safe environment must be considered. These may include atmosphere monitoring and warning devices.
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3
PRECAUTIONS FOR SAFE OPERATION
WARNING
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 cylinder 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.
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4
PRECAUTIONS FOR SAFE OPERATION
WARNING
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 cylinders 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.
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5
PRECAUTIONS FOR SAFE OPERATION
CAUTION
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 cylinder 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.
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6
ENVIRONMENTAL CONDITIONS
This equipment is designed to be safe at least under the following conditions (based on the IEC-61010-1):
ŶIndoor use;
ŶAltitude up to 2000 m;
ŶAmbient temperature 5oC to 40oC
ŶMaximum relative humidity 80% for temperature up to 31oC decreasing linearly to 50% relative humidity at 40oC;
ŶMains supply voltage fluctuations not to exceed ±10% of the nominal voltage;
ŶOther supply voltage fluctuations as stated by the manufacturer;
ŶTransient overvoltages according to Installation Categories (Overvoltage Categories) II; For mains supply the minimum and normal category is II;
ŶPollution degree 2 in accordance with IEC 60664.
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7
FREEZER COMPONENTS
1
2
6
3
12
4
5
6
7
8
9
11 10
13
14 15
O N
O FF
16
Power switch |
Compressor |
|
for A |
||
|
Rear side
Compressor for B
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8
FREEZER COMPONENTS
1.Outer door: To open the door, grip the handle. On closing, lock the door latch completely.
2.Inner door: The operation of the inner door should be quick to minimize the temperature rise in chamber. Lock the door latch completely when the door is closed. The door is removable for cleaning or defrosting. See page 36 “Routine maintenance”.
3.Control panel (on the upper front of the door): Used for temperature setting and indication of operating status is displayed on the panel. See page 10 for details.
4.Door latch: Always lock the latch when the outer door is closed.
5.Magnetic door gasket: This provides a tight door seal and prevents cold air leak. Keep clean.
6.Access port (rear and bottom): This is used for leading a cable and sensor of a measuring equipment, or nozzle of back-up system to chamber.
7.Air intake vent (grille): Do not block this vent to keep the proper cooling performance.
8.Caster: 4 casters are provided to facilitate moving of the cabinet. For the installation, adjust the leveling foot so that the front 2 casters cannot contact with the floor.
9.Leveling foot: The height of the freezer can be adjusted by this screw type foot. Keep the unit in level at the installation.
10.Space for temperature recorder: An automatic temperature recorder (optional component) can be attached here. See page 45 “Temperature recorder (Option)”.
11.Lock: Turn clockwise to 180o with a key and the outer door is securely locked.
12.Air intake port: After closing the outer door, if used to open soon. See page 11
13.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 13 “Installation”.
14.Power switch: This is for turning ON/OFF the power to the unit. ON – “I” OFF – “O”
15.Remote alarm terminal: This is used to notice an alarm condition of the unit to remote location. Refer to page 11 “Remote alarm terminal”.
16.Battery switch: This is a switch for a battery for power failure alarm. Normally, turn on this switch. Be sure to turn off this switch if the freezer is not in operating for the long period (over one month).
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9
FREEZER COMPONENTS
Control panel
1 |
2 |
3 |
4 |
5 |
6
.
7
8
9
1.LCD panel
2.Alarm lamp (ALARM): This lamp is flashed during alarm condition.
3.Figure input key: User for operation setting.
4.Menu button (MENU): To open the menu window during setting.
5.Shift key (Upward, downward, rightward, leftward): To move the cursor on the LCD panel during setting.
6.Enter key (ENTER): To determine the selection of parameter during setting.
7.Clear key (CE): To clear the input value during setting or to return to the top screen after setting.
8.Alarm buzzer stop key (BUZZER): This key has three functions as follows:
-Buzzer stop key : To silence the audible alarm under alarm condition, press this key. Refer to page 33, 34 and 35 for the details.
-Alarm test key: By pressing this key for 5 seconds during normal operation, the alarm lamp blinks, the
buzzer sound and the remote alarm activate. Pressing this key again finishes the alarm test. Refer to page 15 as well.
- Chamber temperature display key: The chamber temperature is displayed by pressing this key during power failure.
9. LCD contrast adjusting knob (CONT.): To adjust the contrast of LCD panel.
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10
REMOTE ALARM TERMINAL
The terminal of the remote alarm is installed at the lower left side of the unit. The alarm is outputted from this terminal. Contact capacity is DC 30 V, 2 A.
Contact output:
|
between COM. and N.O. |
between COM. and N.C. |
At normal |
Open |
Close |
At abnormal |
Close |
Open |
Note:
The alarm is actuated when the power cord is disconnected from the outlet or the power switch is OFF.
REMOTE ALARM
N.C. COM N.O.
MAX DC30V 2A
AIR INTAKE PORT
When a door is closed and opened soon, a door does not |
|
sometimes open this product. |
|
The warm air which went into the chamber is cooled down rapidly, |
|
and this is because air inside the chamber contracted. |
|
When a door is closed and opened soon, a door is easy to open |
|
with the following process. |
|
1. Turn the cap of the left side counterclockwise, and remove it. |
Cap |
|
2.Put the air into the chamber from about ten for twenty seconds, and open a door.
3.Close a cap if a door opens.
A door may not open in the above method when there are frost and ice in the air intake port. In that case, open a cap, and investigate the matter whether there is no frost inside the air intake port. Remove frost inside the air intake port in "the air intake port cleaning stick" of the accessories when there is frost. Clean a air intake port every month even when there is no frost inside the air intake port. Refer to page 37.
WARNING
For removing the frost of the air intake port, do not use a tool with sharp edge such as a knife or a screw driver.
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11
INSTALLATION SITE
To operate this unit properly and to obtain maximum performance, install the unit in a location with the following conditions:
Ŷ 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.
Ŷ 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.
Ŷ 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.
Ŷ A location with little temperature change
Install the unit under stable ambient temperature. The allowable ambient temperature is between -5 and +35oC.
Ŷ A location with a sturdy and level floor
Always install the unit on a sturdy and level floor. The uneven floor or tilted installation may cause failure or injury. Install the unit in stable condition to avoid the vibration or noise. Unstable condition may cause vibration or noise.
WARNING
Install the unit on a sturdy floor. If the floor is not strong enough or the installation site is not adequate, this may result in injury from the unit falling or tipping over.
Select a level and sturdy floor for installation. This precaution will prevent the unit from tipping. Improper installation may result in water spillage or injury from the unit tipping over.
Ŷ 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.
Ŷ 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.
Ŷ 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.
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12
INSTALLATION
1. Remove 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. Adjust the leveling foot
Extend the leveling feet by rotating them counterclockwise to contact them to the floor. Ensure the unit is level. (Fig.1)
3. Fix the unit
|
Leveling foot |
Fig.1 |
|
||
|
||
|
|
|
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)
Fixture
Fig. 2
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.
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13
START-UP OF UNIT
Follow the procedures for the initial and consequent operations of the unit.
1.Connect the power cord to the dedicated outlet having appropriate rating with the chamber empty, and turn on the power switch on the freezer.
2.Turn off the switch of the back-up system (optional component) if it is installed.
3.Check that the battery switch is ON.
4.The audible alarm may activated. In this case, press the buzzer stop key (BUZZER) to silence the alarm.
5.Set the desired chamber temperature. See page 18 for the temperature setting.
6.Check that the chamber temperature reaches the desired temperature.
7.Turn on the switch of back-up system (optional component) if it is installed.
8.Check that the alarm lamp lights and the buzzer sounds by pressing the alarm test key.
9.After confirming the above, you can put articles into the freezer chamber in a small batch to prevent the temperature rise.
Operation after power failure
The set value is memorized by nonvolatile memory. Accordingly, the chamber resumes the operation with setting before power failure. During the power failure, the clock function is operating.
WARNING
When this product operates at the first start-up or after no use for long period, the built-in battery capacity may be lowered or completely zero because of discharge of the battery. After installation the product, the freezer should operate for more than 3 days (72 hours) to charge the battery.
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14
FUNCTION OF CONTROL PANEL
The following functions are available through control panel:.
1.Setting of standby operation: To set a running condition at the start-up. refer to P.17
2.Setting of log interval and sending to PC: To set a log interval (page 22) and to send a log date to PC. refer to P. 24 When this function is used, an optional interface board is necessary. Contact
Sanyo sales representative or agent at the time of installation of the optional parts.(refer to P. 53)
3.Setting of date and time: To set the date and time shown on the top screen. refer to page 29
4.Setting of alarm: To set the high or low temperature alarm(refer to P. 35). Also, to set the alarm delay (refer to page 16).
5.Default setting: To set the default items including LCD back color. refer to page 28
6.Alarm test: The test of alarm buzzer, alarm lamp and remote alarm is effective by pressing the alarm buzzer stop key (BUZZER) for about five seconds during normal operation. Pressing the key again finishes the alarm test.
1.Running operation (Set):
1-1 Chamber temperature (Temperature): -80oC (Default setting) (Setting range: -50oC - -90oC) (Refer to page 18)
1-2 High temperature alarm (High Alarm): +10oC (Default setting) (Setting range:+5oC - +20oC) (Refer to page 19)
1-3 Low temperature alarm (Low Alarm): -10oC (Default setting) (Setting range:-5oC - -20oC) (Refer to page 19)
1-4 Alarm delay time (Alarm Delay): 15 min. (Default setting) (Setting range: 0 -15 min.) (Refer to page 20)
1-5 Ring back of buzzer (Ring Back): 30 min. (Default setting) (Setting range: 0, 1 – 99 min.) (Refer to page 21)
1-6 Key lock (Key Lock): 0 (Default setting), 0: Unlock, 1: Lock (Refer to page 22 – 23)
2.Log (Log): When this function is used, an optional interface board is necessary. Contact Sanyo sales representative or agent at the time of installation of the optional parts.
2-1 Log data on past the first (PC 1D) (Refer to page 24)
2-2 All of the log data (PC ALL) (Up to 5 weeks) (Refer to page 25) 2-3 Clear log data (Clear) (Refer to page 25)
3.Various setting (Tools):
3-1 Initialization (Default Setting): When this function from 3-1-2 to 3-1-4 is used, an optional interface board is necessary. Contact Sanyo sales representative or agent at the time of installation of the optional parts.
3-1-1 LCD Back Color: 1 (Default Setting) (1: Blue 2: White) (Refer to page 28) 3-1-2 DAQ Speed: 0 (Default Setting) (0: 2400 2: 9600(bit/sec)) (Refer to page 28) 3-1-3 DAQ ID: 0 (Default Setting) (0: OFF 1 – 250) (Refer to page 28)
3-1-4 DAQ Mode: 0 (Default Setting) (0: Local 1: Remote) (Refer to page 28) 3-1-5 Remote Alarm: 1 (Default Setting)) 0: OFF 1: Active) (Refer to page 28)
3-1-6 Drive mode (Control: 0 (Default Setting) (0: Normal 1: ECO) (Refer to page 28)
3-2 Date Time (Date Time):
3-2-1 Date: (YY/MM/DD) (Refer to page 29) 3-2-2 Time: (hh:mm:ss) (Refer to page 29)
3-2-3 Door alarm delay time (Door Delay: 2min. (Default Setting) (Setting range: 1 – 15 min) (Refer to page 30)
3-2-4 Log Interval: 15 min (Default Setting) (Setting range: 2 – 30 min.) (Refer to page 31) 3-2-5 Comp Delay: 3 min. (Default Setting) (Setting range: 3 – 15 min.) (Refer to page 32)
3-3 Key Lock PW Setting: (Refer to page 33)
ƔAfter setting, press the menu button (MENU), select “OK” and press the enter key (ENTER) The setting is memorized.
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15
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