Sanyo MDF-C8V Installation Manual

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INSTRUCTION MANUAL

Ultra-Low Temperature Freezer

MDF-C8V

CONTENTS

INTRODUCTION P. 2

PRECAUTIONS FOR SAFE OPERATION P. 3

ENVIRONMENTAL CONDITIONS P. 7

FREEZER COMPONENTS P. 8

Control panel P. 10

INSTALLATION SITE P. 11

INSTALLATION P. 12

START-UP OF UNIT P. 13

CHAMBER TEMPERATURE SETTING P. 14

KEY LOCK FUNCTION P. 14

ALARM TEMPERATURE SETTING P. 15

SETTING OF ALARM RESUME TIME P. 17

CHANAGE OF COMPRESSOR DELAY TIME P. 18

REMOTE ALARM TERMINAL P. 19

ALARMS & SAFETY FUNCTIONS P. 20

ROUTINE MAINTENANCE

Cleaning of cabinet P. 21

Defrosting P. 21

Battery P. 22

REPLACEMENT OF BATTERY P. 23

TROUBLESHOOTING P. 24

DISPOSAL OF UNIT P. 25

Recycle of battery P. 25

TEMPERATURE RECORDER (OPTION) P. 30

Installation of MTR-85H P. 31

Installation of MTR-G85 P. 33

BACK-UP SYSTEM (OPTION) P. 35

SPECIFICATIONS P. 37

PERFORMANCE P. 38

SAFETY CHECK SHEET P. 39

INTRODUCTION

Ŷ Read this manual carefully before using the appliance and follow the instructions for safety operation.

Ŷ 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.

Ŷ Keep this manual in an adequate place to refer to it as necessary.

Ŷ The contents of the manual will be subjected to change without notice due to the improvement of

performance or functions.

Ŷ Contact Sanyo sales representative or agent if any page of the manual is lost or page order is incorrect.

Ŷ Contact Sanyo sales representative or agent if any point in this manual is unclear or if there are any

inaccuracies.

Ŷ No part of this manual may be reproduced in any form without the expressed written permission of

Sanyo.

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;



Be sure to keep this manual in a place accessible to users of this unit.

< Label on the unit >

this symbol means caution.

this symbol means an action is prohibited.

this symbol means an instruction must be followed.

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 CO2 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.

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

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.

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.

WARNING

PRECAUTIONS FOR SAFE OPERATION

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.

CAUTION

ENVIRONMENTAL CONDITIONS

This equipment is designed to be safe at least under the following conditions (based on the IEC 1010-1):

Ŷ Indoor use;

Ŷ Altitude up to 2000 m;

Ŷ Ambient temperature 5

Ŷ Maximum relative humidity 80% for temperature up to 31

at 40

Ŷ Mains supply voltage fluctuations not to exceed 㫧10% of the nominal voltage;

Ŷ Other supply voltage fluctuations as stated by the manufacturer;

Ŷ Transient overvoltages according to Installation Categories (Overvoltage Categories) II; For mains

supply the minimum and normal category is II;

Ŷ Pollution degree 2 in accordance with IEC 664.

C to 40oC

C decreasing linearly to 50% relative humidity

FREEZER COMPONENTS

1. Lock: By turning to 180 degree to clockwise with a key, the door can be locked.

2. Door: Top hinged type. To open the door, grip the handle.

3. Magnetic door gasket: Seals the door and prevents leakage of cold air.

4. Inner lid: Serves as a means of reducing cold air leakage when the door is open. Remove the frost

regularly.

5. Access port: Located on the back side and bottom. These are used for leading the measuring cable from the freezing chamber to the outside. The bottom port is also used for passing the temperature sensor.

6. Caster: 4 casters are provided for easy movement.

7. Leveling foot: Serves to adjust the height and to settle the frame evenly.

8. Intake air vent: Be careful not to block this.

9. Control panel: The temperature setting keys etc. are located. See page 10 for details.

10. Space for temperature recorder: An automatic temperature recorder (optional part) can be

attached here. See page 30 “Temperature recorder (option)”.

11. Battery switch (back side): 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).

12. Remote alarm terminal (back side): Used to notify an alarm condition of the unit to remote location. See page 19 for details.

13. Fixture (back side): A fixture is attached to the rear of the frame. Fix the frame to the wall with this fixture and rope or chain.

FREEZER COMPONENTS



Control panel

1. Alarm buzzer stop key (BUZZER): To silence the audible alarm, press this key. The alarm during

the alarm test cannot be silenced by pressing this key. See page 17 “Setting of alarm resume time” for the details.

2. Set key (SET): Temperature setting mode is led by pressing this key and the changeable digit is flashed. By pressing this key again, the setting is memorized. The set mode returns to the temperature display mode automatically when 90 seconds has passed without any key operation. Refer to page 14 “Chamber temperature setting” for the details.

3. Digit shift key (

Key lock is available by pressing this key for more than 5 seconds in the temperature display mode. Refer to page 14 for the key lock.

4. 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. Pressing this key for more than 5 seconds in the temperature display mode causes the alarm temperature setting mode or alarm resume time setting mode. See page 15 “Alarm temperature setting” or page 17 “Setting of alarm resume time”.

5. Digital temperature indicator (TEMPERATURE): This indicator shows the present chamber temperature or set temperature.

6. Alarm lamp (ALARM): This lamp is flashed during alarm condition.

7. Alarm test key (ALARM TEST): To check the alarm system during freezer operation. Pressing this

key with the battery switch ON gets the alarm lamp to flash, the remote alarm to operate, and the buzzer to sound.

8. Battery check lamp (BATTERY): This lamp lights to recommend the battery replacement. For the replacement, consult Sanyo sales representative or agent.

1 7 2 3 4

): Pressing this key in the setting mode causes the changeable digit to shift.

5 8 6

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

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.

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 foot Extend the leveling feet by rotating them counterclockwise to contact them to the floor. Ensure the unit is level and the casters are not in contact with the floor.

3. Fixing the unit A fixture is attached to the rear of the frame. Fix the frame to the wall with this fixture and rope or chain.

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.

Leveling foot

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.

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.

2. Turn off the power switch of the back-up system (optional component) if it is installed.

3. Check that the battery switch is ON.

4. Set the chamber temperature to the desired temperature.

5. Allow the chamber temperature to fall to the desired temperature. Check the chamber temperature on the temperature indicator.

6. Turn on the power switch of the back-up system (optional component) if it is installed.

7. Press the alarm test key (ALARM TEST) and check that the alarm lamp blinks and alarm buzzer

activates.

8. 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 settings (chamber temperature, alarm temperature) are memorized by nonvolatile memory during the power failure. Accordingly, the freezer resumes the operation with setting before power failure.

The condensing fan does not operate for more than 30 minutes after start-up. The condensing fan may not operate during normal operation when the ambient temperature is lower than 20

C. This does not mean malfunction.

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 -75

Note: The chamber temperature is set to -80

Table 1 Basic operation sequence (Example: Chamber temperature -75

Description of operation Key operated Indication after operation

Connect the power cord to the

dedicated outlet.

2 Press SET key. SET The second digit is flashed.

C at the factory.

---- The current chamber temperature is

displayed.

Set to -75 with the numerical value

shift key and digit shift key.

4 Press SET key. SET

Note:

Ŷ The temperature set mode returns to the temperature display mode automatically when 90 seconds has

passed without any key operation.

Ŷ Although the value of the chamber temperature setting can range from -55

temperature range with no load is between -60

C and -80oC when the ambient temperature is 30oC.

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 available. The key lock is set to OFF at the factory.

Display Mode Function

L 0 Key lock is OFF Enable to change of temperature setting

L 1 Key lock is ON Disable to change of temperature setting

Table 2. Procedure for key lock setting (change from key lock OFF to key lock ON)

Description of operation Key operated Indication after operation

2 Press digit shift key for 5 seconds.

Press numerical value shift key

and scroll the figure to 1.

4 Press SET key. SET

---- The current chamber temperature is

When pressed, the figure of settable

digit changes.

When pressed, the settable digit

is shifted.

Set temperature is memorized and the

current chamber temperature is

displayed.

C to -85oC, the guaranteed

displayed.

The first digit is flashed.

When pressed, the figure of settable

digit changes.

The key lock is set to ON.

The current chamber temperature is

displayed.

ALARM TEMPERATURE SETTING

This unit is provided with the high and low temperature alarm and the temperature at which the alarm is activated is changeable. The following procedure shows the setting of alarm temperature according to the condition below:

High temperature alarm: activates at the temperature 5 Low temperature alarm: activates at the temperature 5 Note: The alarm temperature is set at the factory 10

C higher and lower than the chamber set temperature. The available range of high/low temperature alarm is between 5 chamber set temperature.

Table 3 Procedure for setting high temperature alarm

Description of operation Key operated Indication after operation

1 -----

Press numerical value shift key for

5 seconds.

Press numerical value shift key and

scroll the figure to 1.

---- The current chamber temperature is

When pressed, the figure of settable

4 Press set key. SET

Set the temperature to 005 with the

digit shift key and numerical value shift key.

When pressed, the figure of settable

6 Press set key. SET

C higher than the chamber set temperature

C lower than the chamber set temperature

C and 20oC higher/lower than the

displayed.

The first digit is flashed.

digit increases.

The right digit is flashed.

Pressing the key shifts the digit which can be set.

digit increases.

Alarm temperature is memorized and the current chamber temperature is displayed.

ALARM TEMPERATURE SETTING

Table 4 Procedure for setting low temperature alarm

Description of operation Key operated Indication after operation

1 -----

Press numerical value shift key for

5 seconds.

Press numerical value shift key and

scroll the figure to 2.

4 Press set key. SET

Set the temperature to -05 with the

digit key and numerical value shift key.

6 Press set key. SET

---- The current chamber temperature is displayed.

The right digit is flashed.

When pressed, the figure of settable

digit increases.

The right 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.

SETTING OF ALARM RESUME TIME

The alarm buzzer is silenced by pressing alarm buzzer stop key (BUZZER) key on the control panel

during alarm condition (The remote alarm is not silenced). The buzzer will be activated again after

certain suspension if the alarm condition is continued. The suspension time can be set by following the

procedure shown in the Table 5 below.

The example in the table is based on the assumption that the desired duration is 20 minutes.

Note: The duration is set in 30 minutes at the factory.

Table 5 Setting procedure for alarm resuming time (change from 30 minutes to 20 minutes)

Description of operation Key operated Indication after operation

1 -----

Press numerical value shift key for

5 seconds.

Set the figure to F25 with the

digit shift key and numerical value

shift key.

4 Press set key. SET

Set the figure to 020 with the

numerical value shift key.

6 Press set key. SET

Ŷ The settable alarm resume time is 10, 20, 30, 40, 50, or 60 minutes (The setting is 010, 020, 030, 040,

050, or 060). The buzzer would not reset if the reset time is set in 000.

Ŷ It is recommended to set the alarm resume time when the freezer is not under alarm condition. The

new setting is effective on the next alarm condition.

Ŷ The setting cannot be changed during power failure.

Ŷ The remote alarm during power failure or buzzer and remote alarm during alarm test cannot be

silenced.

Ŷ 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 the set key (SET) is not memorized.

---- The current chamber temperature is

displayed.

The first digit is flashed.

Pressing the key shifts the digit which can be set.

When pressed, the figure of settable

digit increases.

The current setting is displayed.

The middle digit is flashed.

When pressed, the figure of settable

digit increases.

Alarm resume time is memorized and

the current chamber temperature is

displayed.

CHANGE OF COMPRESSOR DELAY TIME

The delay time of the compressor can be changed to reduce the load on the power line and to facilitate

the start-up (reset) of the freezer after power failure.

The example in the table is based on the assumption that the delay time is changed to 4 minutes.

The delay time is set in 2 minutes at the factory.

Note:

Ŷ The setting range for delay time is between 2 and 15 minutes. The cool down of chamber temperature

may be slow when the setting of delay time is over 5 minutes, depending on the installation environment.

There is no need of changing the delay time when the capacity of power source is adequate.

Table 6. Changing procedure for delay time (change from 2 minutes to 4 minutes)

Description of operation Key operated Indication after operation

1 ----

Press numerical value shift key for

5 seconds.

Set the figure to F05 with the

numerical value shift key.

When pressed, the figure of settable

4 Press set key. SET

Set the figure to 004 with the

numerical value shift key.

The current chamber temperature is

displayed.

The first digit is flashed.

digit changes.

The current delay time is displayed.

The first digit is flashed.

When pressed, the figure of the first

digit changes.

The delay time is memorized and

6 Press set key. SET

the current chamber temperature is

displayed.

Ŷ The compressor starts to run with the delay time when the power cord is connected to the outlet or after

power failure.

REMOTE ALARM TERMINAL

WARNING

Always disconnect the power supply cord before connecting an alarm device to the remote alarm

terminal.

The terminal of the remote alarm is installed at the back of the unit. The alarm is generated from this terminal. The contact capacity is DC 30 V, 2 A. Contact output: Between COM and N.O. Between COM and N.C.

At normal condition “Open” “Close” At abnormal condition “Close” “Open”

Note: The alarm device is activated when the power cord is disconnected because such condition is determined as power failure.

REMOTE

ALARM

MAX DC30 V 2 A

N.C.

COM

N.O.

ALARMS & SAFETY FUNCTIONS

This unit has the alarms and safety functions shown in Table 7, and also self diagnostic functions.

Table 7 Alarms and safety functions

Alarm & Safety Situation Indication Buzzer Safety operation

High temperature

alarm

Low temperature

alarm

Power failure

alarm

Battery check

Sensor

abnormality

Battery switch

check

Condenser temp.

abnormality

If the chamber temperature is higher

than the temperature at which the

high temperature alarm is activated.

If the chamber temperature is lower

than the temperature at which the

low temperature alarm is activated.

In the case of power failure.

When the power cord is

disconnected.

When approx. 2.8 years has passed

with the power cord connected to

the outlet.

If the thermal sensor is

disconnected..

If the thermal sensor is

short-circuited

If the thermal sensor of the

compressor is disconnected.

If the thermal sensor of the

compressor is short-circuited

When battery switch is OFF at

the time of alarm test.

In the event of failure of fan motor

for cooling the compressor.

Note:

Ŷ After power failure, the operation is resumed with the condition before power failure.

Ŷ The chamber temperature is displayed for 5 seconds if the alarm buzzer stop key (BUZZER) is

depressed during the power failure alarm. After that, the alarm buzzer stops. The alarm lamp

(ALARM) keeps blinking.

Ŷ In the case of sensor abnormality (E01 or E02 is displayed), the freezer continues to run.

Alarm lamp is flashed.

Temperature indicator is

flashed.

Alarm lamp is flashed.

Temperature indicator is

flashed.

Alarm lamp is flashed. Intermittent tone Remote alarm.

Battery check lamp lights. ----- -----

Alarm lamp is flashed.

E01 and chamber temp.

are displayed alternately.

Alarm lamp is flashed.

E02 and chamber temp.

are displayed alternately.

Alarm lamp is flashed.

E05 and chamber temp.

are displayed alternately.

Alarm lamp is flashed.

E06 and chamber temp.

are displayed alternately.

Alarm lamp is flashed.

E09 is flashed.

Alarm lamp is flashed.

E10 and chamber temp.

are displayed alternately.

Intermittent tone

with 15 minutes

delay.

Intermittent tone

with 15 minutes

delay.

Intermittent tone Remote alarm.

Intermittent tone

Remote alarm with

15 minutes delay.

Remote alarm with

15 minutes delay.

----- -----

Remote alarm.

Compressor of

high stage side

stops.

ROUTINE MAINTENANCE

WARNING

Always disconnect the power supply to the unit prior to any repair or maintenance of the unit in

order to prevent electric shock or injury.

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.

Cleaning of cabinet

Ŷ Clean the unit once a month. Regular cleaning keeps the unit looking new.

Ŷ Use a dry cloth to wipe off small amounts of dirt on the outside and inside of the unit and all accessories.

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

cabinet or accessories with a dry cloth.

Ŷ Never pour water onto or into the unit. Doing so can damage the electric insulation and cause failure.

Ŷ The compressor and other mechanical parts are completely sealed. This unit requires absolutely no

lubrication.

Ŷ Remove the frost on the inner lid once a month.

Ŷ Press the back-up test switch once a month to check the back-up system operation when the back-up

system is installed.

Defrosting

The frost is built on the inside wall of the chamber and inner lid. The excessive frost possibly makes

some gap between the cabinet and door gasket, which may cause poor cooling. Remove the frost with a

scraper enclosed with the unit. Following shows the procedure for removing the heavy frost.

Note: For removing the frost, do not use a tool with sharp edge such as a knife or a screw driver.

1. Move all the contents in the chamber to another low temperature freezer or a tank refrigerated with

liquid N

2. Turn off the remote alarm switch and back-up switch (when installed).

3. Disconnect the power cord from the dedicated outlet.

4. Open the freezer door and remove the inner lid. Keep the freezer as it is until the frost is removed

completely.

5. Wipe out the water that has left in the chamber.

6. Start-up the freezer by following the procedure on page 13 “Start-up the unit”.

7. Once the chamber temperature has dropped to the desired temperature, place the original contents

back in the freezer chamber.

or CO2 gas (or dry ice).

ROUTINE MAINTENANCE

Battery

The battery for power failure alarm is an article for consumption. The battery life is approximately 3 years. The buzzer can not be activated at the power failure and the stored items may be influenced if the battery is left as it is for more than 3 years. It is recommended that the battery is replaced ahead of time. For the replacement of the battery, contact Sanyo sales representative or agent.

REPLACEMENT OF BATTERY

Location of a nickel-metal-hydride battery

This unit is provided a nickel-metal-hydride battery for the power failure warning device. The battery is located at the back of the control panel. (Fig. 1)

The high voltage components are enclosed in the electrical box. The cover should be removed by a qualified engineer or a service personnel only to prevent the electric shock..

Removal of nickel-metal-hydride battery

1. Turn off the power switch and disconnect the power supply plug.

2. As shown in the Fig. 2, remove 1 screws fixing the side cover with a screw driver and remove the side

cover.

3. Disconnect the battery connector. (Fig. 3)

4. Remove 4 screws fixing the battery cover. (Fig. 4)

5. Take out the battery.

6. Follow the procedure for recycling or proper disposal.

Handling of battery

Cover the battery terminal with an insulating tape to avoid the short circuit. Then follow the procedure for recycling or proper disposal.

Battery

Fig. 1 Fig. 2

Battery connector

Fig. 3 Fig. 4

Side cover

Battery cover

TROUBLESHOOTING



If the unit malfunctions, check out the following before calling for service.

Malfunction Check/Remedy

The freezer does not run Ŷ The power cord is not connected to the proper outlet.

Ŷ The power source does not have enough capacity.

Ŷ The power failure is occurred.

Ŷ The circuit breaker of power source is active.

Ŷ The fuse is blown.

Note:

Move the freezer contents to another freezer if the chamber temperature

raise due to the freezer failure.

The alarm device is active <at the start-up>

Ŷ The chamber temperature deviates from the set temperature.

Ŷ The set temperature was changed.

Ŷ The door was kept opened for long period.

Ŷ The high temperature load was stored in the chamber.

In above cases, the alarm is stopped automatically after certain time.

The cooling is poor Ŷ You put too many articles of high temperature in the chamber.

Ŷ Too much frost is in the chamber.

Ŷ The door is opened/closed frequently.

Ŷ The set temperature is not appropriate.

Ŷ The freezer is in the direct sunlight.

Ŷ The freezer is not installed properly.

There is condensation

outside the freezer

Noise Ŷ The freezer is not installed on the sturdy floor.

Note:

If the malfunction is not eliminated after checking the above items, or the malfunction is not shown in the

above table, contact Sanyo sales representative or agent.

CAUTION

The noise of refrigerant flow may be heard due to the characteristic of refrigerating circuit. Especially for

several hours after start-up, the noise of motor compressor or refrigerant flow can be larger. But such

noise does not mean malfunction nor failure.

Ŷ The condensation can be found outside the freezer depending on the

installation site, or under muggy environment. The condensation is

caused by the humidity not by freezer failure.

Wipe off the condensation with a dry cloth.

Ŷ The freezer is not leveled with the leveling feet.

Ŷ There is anything touching the frame.

Ŷ The freezer is in the status immediately after start up.

The unit sometimes causes a noise when the chamber temperature is

high due to the large load. The noise gets less and less accompanying

with the cooling of the chamber.

DISPOSAL OF UNIT

WARNING

If the unit is to be stored unused in an unsupervised area for an extended period ensure that children do not have access and doors cannot be closed completely. The disposal of the unit should be accomplished by appropriate personnel. Always remove doors to prevent accidents such as suffocation.

Recycle of battery

The unit contains a rechargeable battery. The battery is recyclable. At the end

䋪Label indication is obliged to comply with Taiwanese battery regulation.

ᑜ㔚ᳰ㩷⺧࿁ᡴ㩷

of it’s useful life, check with you local solid officials option or proper disposal.

DISPOSAL OF UNIT

Note: This symbol mark and recycle system are applied only to EU countries and not applied to the countries in the other area of the world.

Waste Electrical and Electronic Equipment (WEEE) Directive-2002/96/EC

(English)

Your SANYO product is designed and manufactured with high quality materials and components which can be recycled and reused.

This symbol means that electrical and electronic equipment, at their end-of-life, should be disposed of separately from your household waste.

Please dispose of this equipment at your local community waste collection/recycling centre.

In the European Union there are separate collection systems for used electrical and electronic products.

Please help us to conserve the environment we live in!

(German)

Ihr SANYO Produkt wurde entworfen und hergestellt mit qualitativ hochwertigen Materialien und Komponenten, die recycelt und wiederverwendet werden können.

Dieses Symbol bedeutet, daß elektrische und elektronische Geräte am Ende ihrer Nutzungsdauer von Hausmüll getrennt entsorgt werden sollen.

Bitte entsorgen Sie dieses Gerät bei Ihrer örtlichen kommunalen Sammelstelle oder im Recycling Centre.

In der Europäischen Union gibt es unterschiedliche Sammelsysteme für Elektrik- und Elektronikgeräte.

Helfen Sie uns bitte, die Umwelt zu erhalten, in der wir leben!

DISPOSAL OF UNIT

(French)

Votre produit Sanyo est conçu et fabriqué avec des matèriels et des composants de qualité supérieure qui peuvent être recyclés et réutilisés.

Ce symbole signifie que les équipements électriques et électroniques en fin de vie doivent être éliminés séparément des ordures ménagères.

Nous vous prions donc de confier cet équipement à votre centre local de collecte/recyclage. Dans l’Union Européenne, il existe des systèmes sélectifs de collecte pour les produits électriques et électroniques usagés.

Aidez-nous à conserver l’environnement dans lequel nous vivons !

Les machines ou appareils électriques et électroniques contiennent fréquemment des matières qui, si elles sont traitées ou éliminées de manière inappropriée, peuvent s’avérer potentiellement dangereuses pour la santé humaine et pour l’environnement. Cependant, ces matières sont nécessaires au bon fonctionnement de votre appareil ou de votre machine. Pour cette raison, il vous est demandé de ne pas vous débarrasser de votre appareil ou machine usagé avec vos ordures ménagères.

(Spanish)

Los productos SANYO están diseñados y fabricados con materiales y componentes de alta calidad, que pueden ser reciclados y reutilizados.

Este símbolo significa que el equipo eléctrico y electrónico, al final de su ciclo de vida, no se debe desechar con el resto de residuos domésticos.

Por favor, deposite su viejo “televisor” en el punto de recogida de residuos o contacte con su administración local.

En la Unión Europea existen sistemas de recogida específicos para residuos de aparatos eléctricos y electrónicos.

Por favor, ayúdenos a conservar el medio ambiente!

DISPOSAL OF UNIT

(Portuguese)

O seu produto SANYO foi concebido e produzido com materiais e componentes de alta qualidade que podem ser reciclados e reutilizados.

Este símbolo significa que o equipamento eléctrico e electrónico no final da sua vida útil deverá ser descartado separadamente do seu lixo doméstico.

Por favor, entregue este equipamento no seu ponto local de recolha/reciclagem.

Na União Europeia existem sistemas de recolha separados para produtos eléctricos e electrónicos usados.

Por favor, ajude-nos a conservar o ambiente em que vivemos!

(Italian)

Il vostro prodotto SANYO è stato costruito da materiali e componenti di alta qualità, che sono riutilizzabili o riciclabili.

Prodotti elettrici ed elettronici portando questo simbolo alla fine dell’uso devono essere smaltiti separatamente dai rifiuti casalinghi.

Vi preghiamo di smaltire questo apparecchio al deposito comunale. Nell’Unione Europea esistono sistemi di raccolta differenziata per prodotti elettrici ed elettronici.

Aiutateci a conservare l’ambiente in cui viviamo!

DISPOSAL OF UNIT

(Dutch)

Sanyo producten zijn ontwikkeld en gefabriceerd uit eerste kwaliteit materialen, de onderdelen kunnen worden gerecycled en weer worden gebruikt.

Het symbool betekent dat de elektrische en elektronische onderdelen wanneer deze vernietigd gaan worden , dit separaat gebeurt van het normale huisafval.

Zorg ervoor dat het verwijderen van de apparatuur bij de lokaal erkende instanties gaat gebeuren. In de Europese Unie wordt de gebruikte elektrische en elektronische apparatuur bij de daarvoor wettelijke instanties aangeboden.

Alstublieft help allen mee om het milieu te beschermen.

(Swedish)

Din SANYO produkt är designad och tillverkad av material och komponenter med hög kvalitet som kan återvinnas och återanvändas.

Denna symbol betyder att elektriska och elektroniska produkter, efter slutanvändande, skall sorteras och lämnas separat från Ditt hushållsavfall.

Vänligen, lämna denna produkt hos Din lokala mottagningstation för avfall/återvinningsstation.

Inom den Europeiska Unionen finns det separata återvinningssystem för begagnade elektriska och elektroniska produkter.

Vänligen, hjälp oss att bevara miljön vi lever i!

TEMPERATURE RECORDER (OPTION)

WARNING

Always disconnect the power supply to the unit prior to attachment of a temperature recorder in

order to prevent electric shock or injury.

An automatic temperature recorders is available for the freezer as the optional component. The type of the recorder is MTR-85H or MTR-G85. For the attachment, optional component is necessary as follows.

Temperature recorder Mounting kit Recorder sensor cover

For the installation of the temperature recorder, contact Sanyo sales representative or agency.

MTR-85H MTR-G85

MDF-S3085

-----

MTR-C8 MTR-C8

Space for temperature recorder

TEMPERATURE RECORDER (OPTION)

Installation of MTR-85H

1. Remove 4 screws (A, B, C, D) on the side of the

front panel to take off the front panel. Then remove 4 screws on the cover for the recorder mounting space and take off the cover (Fig. 1). After removing the cover, replace 4 screws.

2. As shown in Fig. 2, install the recorder to the front panel by using the fixture enclosed with the recorder and the mounting plate (MDF-S3085).

3. Lead the recorder sensor to the chamber through the access port at the bottom of the chamber.

Note:

The port is covered with a thermal insulation and rubber cap. Remove those covers before passing the recorder sensor.

4. Fix the recorder sensor to the inside of the sensor cover (MTR-C8) by using the enclosed clips and screws and seal the access port on the chamber side with a silicon. (Fig. 3)

Fixture

Recorder sensor

Sensor cover

Front panel

Cover

Mounting plate

Silicon

Fig. 1

Recorder

Fig. 2

Fig. 3

TEMPERATURE RECORDER (OPTION)

6. Attach the sensor cover to the right side of the

chamber with 2 screws on the chamber wall (Fig. 4)

7. Seal the access port on the outside with putty as shown in Fig. 5.

8. Replace the front panel and fix it with 4 screws.

9. Operate the freezer until the chamber temperature

gets to the set temperature. Check the recorded temperature and chamber temperature displayed on the control panel. Adjust the zero adjustment volume on the temperature recorder so that the recorded temperature can corresponds with the displayed temperature if they are not compliance each other. Refer to the instruction manual enclosed with the recorder.

Sensor cover

Putty

Fig. 4

Fig. 5

TEMPERATURE RECORDER (OPTION)

：

Installation of MTR-G85

1. Remove 4 screws (A, B, C, D) on the side of the

front panel to take off the front panel. Then remove 4 screws on the cover for the recorder mounting space and take off the cover (Fig. 1).

2. Fix the temperature recorder to the front panel with fixture and screws enclosed with the recorder.

Note

Before fixing the temperature recorder, connect the recorder connector with the connector on the right back side of the control panel (Fig. 2)

3. Lead the recorder sensor to the chamber through the access port at the bottom of the chamber.

Note:

The port is covered with a thermal insulation and rubber cap. Remove those covers before passing the recorder sensor.

4. Fix the recorder sensor to the inside of the sensor cover (MTR-C8) by using the enclosed clips and screws and seal the access port on the chamber side with a silicon. (Fig. 3)

Recorder sensor

Sensor cover

Front panel

Cover

Connector Recorder

Silicon

Fig. 1

Fig. 2

Fig. 3

TEMPERATURE RECORDER (OPTION)

6. Attach the sensor cover to the right side of the

chamber with 2 screws on the chamber wall (Fig. 4)

7. Seal the access port on the outside with putty as shown in Fig. 5.

9. Replace the front panel and fix it with 4 screws.

10. Operate the freezer until the chamber temperature

Sensor cover

Putty

Fig. 4

Fig. 5

BACK-UP SYSTEM (OPTION)

This freezer can be provided with a back-up system (CVK-UB4) which is available as an optional component. For the installation, refer to the instruction manual enclosed with the system.

1. Power switch (BACKUP) When turning on the system, the back-up standby lamp (green) is brightened. This means that the system is ready. To stop the operation of the system, turn off this switch.

2. Test switch (TEST) This switch is for checking the operation of back-up system. Pressing this switch is resulted in the release of liquid carbon dioxide gas without system operation.

3. Temperature setting knob (TEMP. SET) With this knob, set the temperature at which the system is operated. The effective set temperature range is between -50

4. Back-up standby lamp (BACK UP STANDBY) A lamp that is activated in conjunction with the ON/OFF of the power switch of the back-up system.

5. Battery lamp (BATTERY)

This lamp is brightened in orange when the battery capacity is less.

WARNING

As with any equipment that uses CO

of the equipment. It is important that you assess the work site to endure 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.

CVK-UB4 control panel

C and -70oC.

BACK UP

STANDBY

BATTERY

CVK-UB4 switch box

gas, there is a likelihood of oxygen depletion in the vicinity

BACK-UP SYSTEM (OPTION)

With the back-up system (CVK-UB4), the freezer prevents the chamber temperature from going up by

injecting the liquid CO

cord, breaker OFF) or in the case of failure of freezer itself. The liquid CO

activation of solenoid valve energized by battery when the chamber temperature reaches the alarm

temperature.

Following shows the procedure for setting the back-up system.

1. Setting of liquid CO

By using the joint and pipe enclosed with the

back-up system, connect the liquid CO

cylinder to the joint of the back-up system. For

this setting, consult with a qualified gas supplier or

Sanyo sales agency.

2. After setting the liquid CO

the freezer until the chamber temperature reaches

the required level.

3. Set the temperature of back-up operation at the

temperature higher than -70

system is operated continuously if the temperature

of back-up operation is set at the temperature

lower than -70

C. This means the liquid CO2 gas

is consumed very quickly.

4. Switch on the back-up system.

5. Make sure that liquid CO

Note:

Ŷ The liquid CO

C. Install the liquid CO2 gas cylinder in the cool environment. And the duration of back-up time per

one liquid CO

gas cylinder varies depending on the ambient temperature. Refer to “Installation of

back-up system” enclosed with the back-up system for the available back-up time.

Ŷ The liquid CO

Ŷ Use the pipe encloses with the back-up system for the setting. (The extension of the pipe is not

permitted because of cooling capacity.)

gas when the power supply is disconnected (power failure, disconnection of power

gas cylinder

gas

gas cylinder, operate

C. The back-up

gas spouts into the freezer chamber by pressing the back-up test switch.

gas cylinder loses its cooling capacity at speed when the ambient temperature is over

Rough scheme (back side)

gas cylinder should be a siphon type.

gas is injected with the

Liquid CO

gas cylinder

SPECIFICATIONS



Name Ultra-Low Temperature Freezer

Model MDF-C8V

External dimensions W550 x D685 (+83)* x H945 (mm)

Internal dimensions W405 x D490 x H425 (mm)

Effective capacity 84 L

Exterior Painted steel

Interior Painted steel

Door Painted steel

Access port Diameter 17 mm, back side, bottom

Insulation

Compressor Hermetic rotary type, 400 W

Evaporator Tube on sheet type (also used as a inner cabinet)

Condenser Finless tube type

Refrigerant HFC mixed refrigerant

Temperature controller Microcomputer control system

Temperature display Digital display (setting range; between -55oC and -85oC)

Temperature sensor

Temperature alarm High temp. alarm, Low temp. alarm, Remote alarm, Battery check

Remote alarm contact Allowable contact capacity: DC 30 V, 2 A

Battery Nickel-metal-hydride battery, DC 6 V, 1100 mAh, Automatic charge

Weight 64 kg

Accessories 1 set of key, 1 scraper

Optional component

Note:

Design or specifications will be subject to change without notice. * The value in the parenthesis means the dimension of projected area. The battery for power failure alarm is an article for consumption. It is recommended that the battery will be replaced about every 3 years.

Cabinet; Rigid polyurethane foamed-in place and VIP(vacuum insulation panel)

Automatic temperature recorder (MTR-85H, MTR-G85)

Mounting kit for automatic temperature recorder MTR-85H (MDF-S3085)

Back-up system (CVK-UB4), Back-up mounting plate (MDF-UBK)



Door; Rigid polyurethane foamed-in place

Platinum resistance (Pt 1000Ω)

Recorder sensor cover (MTR-C8)

Inventory rack (IR-207C, IR-305C)



PERFORMANCE

Cooling performance -80oC (ambient temperature; 30oC, no load)

Temperature control range -60oC to -80oC (ambient temperature; 30oC, no load)

Rated voltage AC 110 V AC 115 V AC 220 V AC 230V AC 240V AC 220V

Rated frequency 60 Hz 60 Hz 50 Hz 50 Hz 50 Hz 60 Hz

Rated power consumption 295 W 300 W 310 W 325 W 350 W 310 W

Noise level 49 dB [A] (background noise; 20 dB)

Maximum pressure 3.7 MPa

Note :The unit with CE mark complies with EC directives 89/336/EEC, 93/68/EEC and 73/23/EEC.

CAUTION

Please fill in this form before servicing.

Hand over this form to the service engineer to keep for his and your safety.

Safety check sheet



1. Freezer contents : □Yes□No Risk of infection: □Yes□No Risk of toxicity: □Yes□No Risk from radioactive sources: □Yes□No

(List all potentially hazardous materials that have been stored in this unit.) Notes :

Contamination

Unit interior: □Yes□No No contamination: □Yes□No Decontaminated: □Yes□No Contaminated: □Yes□No Others:

3. Instructions for safe repair/maintenance of the unit a) The unit is safe to work on □Yes□No b) There is some danger (see below) □Yes□No

Procedure to be adhered to in order to reduce safety risk indicated in b) below.

Date : Signature :

Address, Division :

Telephone :

Product name: Model: Serial number: Date of installation:

Ultra-low temperature

reezer

Please decontaminate the unit yourself before calling the service engineer.

of the unit:

MDF-C8V

(I)

INSTRUCTION MANUAL

Back-up System for Ultra-Low Temperature Freezer

CVK-UB4 CVK-UB4

CONTENTS

INTRODUCTION P. 2

PRECAUTIONS FOR SAFE OPERATION P. 3

COMPONENTS LIST P. 5

INSTALLATION

Assembling of the solenoid valve P. 8

Installation of the door switch P. 9

installation of the back-up kit P.10

Wiring P.12

CONTROL PANEL P.13

TRIAL OPERATION P.14

Calibration P.14

SPECIFICATIONS P.15

PERFORMANCE P.15

INTRODUCTION

Ŷ Read this manual carefully before using the appliance and follow the instructions for safety operation.

Ŷ 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.

Ŷ Keep this manual in an adequate place to refer to it as necessary.

Ŷ The contents of the manual will be subjected to change without notice due to the improvement of

performance or functions.

Ŷ Contact Sanyo sales representative or agent if any page of the manual is lost or page order is incorrect.

Ŷ Contact Sanyo sales representative or agent if any point in this manual is unclear or if there are any

inaccuracies.

Ŷ No part of this manual may be reproduced in any form without the expressed written permission of

Sanyo.

Ŷ The mounting plate (MDF-UBK) of the option goods is necessary for the installation of the back-up

system.

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;



Be sure to keep this manual in a place accessible to users of this unit.

< Label on the unit >

this symbol means caution.

this symbol means an action is prohibited.

this symbol means an instruction must be followed.

WARNING

PRECAUTIONS FOR SAFE OPERATION

Only qualified engineers or service personnel should install this system. The installation by

unqualified personnel may cause electric shock or fire.

Turn off the all switches and disconnect the power supply to the ultra low temperature freezer prior to the attachment of the back-up system in order to prevent electric shock or injury.

Never disassemble, repair, or modify the unit yourself. Any such work carried out by an

unauthorized person may result in fire or injury due to a malfunction.

There is a terminal (AC 100V) of the high voltage in the back-up system. Attach the back-up unit cover before starting the trial operation. The operation without the cover may cause electric

shock.

gas is released when the back-up system is operated. Use this kit in well-ventilated

environment as high CO

This manual includes the attachment procedure for CVK-UB4 and CVK-UB4(I) only. For its

operation and the operation of a ultra-low temperature freezer, see an instruction manual provided with the freezer.

Put on the dry gloves to protect the hands at the time of attachment. No gloves may cause cut of the finger by the edge or corner.

Connect a pipe from a liquid CO

cause gas leakage.

Check the gas piping before trial operation to avoid gas leakage.

Stop the operation immediately and review the attachment procedure carefully if there is

something wrong with the back-up system during the trial operation.

density level may cause a deficiency of oxygen.

WARNING

CAUTION

gas cylinder to this unit correctly. Incorrect connection may

COMPONENTS LIST

Confirm that the accessories of the table 1 are gathered. Report it to the dealer or the sales if there is a problem in packing of the product.

Table 1

No. PARTS NAME Q’ TY APPEARANCE THE EXPLANATION OF THE USE

1 PLATE MTG A 1

LCO

SOLENOID

2-1

2-2

VALVE ASS’Y

LCO

SOLENOID

VALVE

VALVE OUTLET PIPE

2-3 SK BAND 2

LCO

JOINT PIPE

AND JOINT

PACKING

The plate fixes a solenoid valve cover.

It is the solenoid valve of LCO2. (This is assembled by the setup.)

It is a part of the LCO2 solenoid valve assy.

It is a part of the LCO assy.

A CO2 valve is put in the chamber, and it is the part which fixes insulation.

The pipe which connects a LCO cylinder and the LCO

solenoid valve

solenoid valve.

gas

BACK-UP

SYSTEM

SOLENOID VALVE

COVER

BACK-UP SYSTEM

COVER

VALVE PLATE

MTG

8 VALVE COVER 1

is injected when a freezer has

LCO

temperature rise.

This cover is a protection of the LCO solenoid valve.

This cover is a protection of the back-up system.

This plate fixes a valve cover.

This cover protects a valve outlet pipe in the chamber.

COMPONENTS LIST

The continuation of the table 1

No. PARTS NAME Q’ TY APPEARANCE THE EXPLANATION OF THE USE

9 LABEL 1

10-1

DOOR SWITCH ASS’Y

INDICATOR LAMP (GREEN)

It is put near the connection place.

This assy connected a door switch and two indicator lamps (green and orange).

It is the lamp turned on with a power switch of the back-up system. 䋨 It is attached.䋩

10-2

10-3 DOOR SWITCH -

10-4

13 STRIKE PLATE 1

14 WIRE COVER 2

INDICATOR LAMP (ORANGE)

WIRING ASS’Y DS

DOOR SWITCH MTG PLATE

SHIM (for DOOR SWITCH MTG PLATE)

SCREW A M4䌸10

(C TIGHT)

SCREW B M4䌸10

(STAINLESS)(CO LORED HEAD)

SCREW C M4䌸10

(STAINLESS)

SCREW D M5䌸10

(STAINLESS)

SCREW E M5䌸16

(PAN HEAD)

1 Refer to the Fig. of Page12.

It is the lamp turned on when the battery of the backup system declines. 䋨 It is attached.䋩

When the door of the freezer opens and closes, it is the switch which does on-off. 䋨It is attached.䋩

These wires are the indicator lamp and the door switch. 䋨It is attached.䋩

It is a plate which fixes a door switch ass’y.

It is a plate to lay under the door switch mounting plate.

It is fixed on the door of the freezer, and it is the part that on-off does a door switch by the open/close of the door..

This cover fixes the wiring ass’y DS of the door switch ass’y.

For nylon clip 6N䋨1䋩䇮For Nylon clip 7N 䋨2䋩䇮For back-up system䋨2䋩䇮For solenoid valve䋨4䋩䇮For mounting plate䋨2䋩

For solenoid cover䋨4䋩䇮For door switch ass’y 䋨3䋩

For valve cover

For strike plate

For door switch mounting plate

COMPONENTS LIST

The continuation of the table 1

No. PARTS NAME Q’ TY APPEARANCE THE EXPLANATION OF THE USE

21 NYLON CLIP 6N 1

22 NYLON CLIP 7N 2

WIRING ASS’Y BP

It is harness to install on the electric box of the freezer (option).

Wiring ass’y DS is fixed.

Wiring ass’y BP is fixed.

INSTALLATION

※

Assembling of the solenoid valve

1. The joint nut on the outlet side of the CO

pipe insulation is inserted into the joint nut, and fastened in the joint. (Fig. 1) Fasten a joint part securely so that CO

2. Insulation is fixed with a SK band. (Two places) (Fig. 3).

CAUTION

Check the gas piping before trial operation to avoid gas leakage. The nut marked with

in Fig. 1 is not fixed surely. Tighten it completely by assembling, and enforce a leak

test.

gas can not leak out. (Fig. 2).

Valve outlet pipe

Pipe insulation

SK band

Joint

solenoid valve is removed. The valve outlet pipe with the

㶎

LCO2 solenoid valve

Outlet side

※

Fig. 1

㶎

Joint nut

Insulation

Valve outlet pipe

Fig. 2

Mounting plate B

Fig. 3

INSTALLATION

▼

▲

Installation of the door switch

1.㩷 Spacer and a door switch mounting plate are fixed on the hole of the left side (upside) of the freezer

with two screws E (M5 x 16 pan head). (Fig. 1)

Door switch

Door switch cover

Screw B

2. It confirms that an indicator lamp, the door switch and those wirings are being done, and the door switch ass’y is fixed on the door switch mounting plate with three screws B (M4 x 10 stainless steel (coating head)).(Fig. 2)

3. Strike plate is installed with two screws D (M5 x 10 stainless steel). (Fig. 3) At this time, adjust it to the position where door switch is pushed under the condition that door closes.

Screw D

▼

▲

㪪㪺㫉㪼㫎㩷㪜㩷

▲

Shim for door switch

Shim for door switch mounting plate

Door switch plate mounting

Fig. 1

Fig. 2

Fig. 3

4. Wire cover is put on the rear side of freezer and the protection, and the wiring ass’y DS which it out of

the door switch ass’y is pasted on the left side of freezer. (Fig. 4)

Wire cover

㩷

Fig. 4

5. The connector of the harness is connected to the connector on the top of the back-up system kit. (See Page 12)

INSTALLATION

㩷

Installation of the back-up kit

The slit (bottom right rear side) which freezer is being fitted up with, a rear cover, a sensor cover, the

rubber cap of the access port and insulation inside the access port are taken out.

2. Wiring ass’y BP is passed through the nylon clip 7N, and fixed on the back of MDF-UBK (option) with two screws A (M4 x 10 C It is tight.). At this time, a wiring ass’y BP point is shown from the lower corner access port of MDF-UBK 150 mm. (Fig. 1) (It is wired for the harness in the next step 3)

3. The cover which sticks to the connector (4P) in the rear of electrical box is removed and connected to the connector that it has wiring ass’y BP prepared on the product side, It is fixed with lead wire band on the side of the (Fig. 2) electrical box. The rear cover of freezer is fixed after the management of the wiring ass’y BP is finished. (Fig. 3)

4. At this time, four screws in the rear of the freezer are loosened. (with the second from the top, the 4th (left and right)) And MDF-UBK is fixed with a screw.䋨Fig. 4

5. An back-up system and an back-up system cover are removed, and hook of the top (Fig. 5) on the back of the back-up system is installed on MDF-UBK, and a bottom part is fixed with two screws A (M4 x 10 C It is tight.). Then, it gains a removed back-up system cover in the back-up system in the former street. (Fig. 6)

䋩

Nylon clip 7N

Fig. 1

Fig. 2

Fig. 3

Fig. 4

Fook

Fig. 5

Fig. 6

INSTALLATION

6. The sensor cover inside freezer chamber is removed, and the thermostat sensor part of the back-up system is inserted into the hole under freezer temperature style sensor. The hole of the neighborhood of the thermostat sensor part which inserted (A hole does not open an access port. Therefore, make a hole in the plus driver.) into freezer inside and the rear side is stopped with silicon. Then, a thermostat sensor is fixed on the sensor mounting plate by using the clip prepared in the sensor mounting plate in advance. After that, gain a sensor cover inside in the former street. (Fig. 7)

7. There is a access port which inserts the CO2 valve outlet pipe of the CO

solenoid into the lower corner hole of MDF-UBK. The CO2 valve

outlet pipe is inserted in that, and a LCO MDF-UBK with one screw A (M4 x 10 C It is tight.). (Fig. 8) The mounting plate A is fixed with two screws A (M4 x 10 C is tight.). The surroundings of the CO are blocked with silicon. (Fig. 9) The valve cover mounting plate is fixed by using the screw which sticks in the freezer in advance. It gains a valve cover after a CO

10)

8. The wiring ass’y DS which it goes to out of the door switch ass’y is passed through the nylon clip 6N, and MDF-UBK is stopped with one screw A (M4 x 10 C It is tight.). (Fig. 11)

9. When all harness management is finished, a solenoid valve cover is fixed with four screws B (M4 x 10 stainless steel (coating head)) four places. (Fig. 12) (see page 12.)

valve outlet pipe which inserted into freezer

valve outlet pipe is bent in the bottom. (Fig.

chamber side

It is blocked with the silicone.

Thermostat sensor (A pipe is made a U form.)

solenoid valve is fixed on

Silicon

Valve outlet pipe 䋨Copper pipe䋩

Fig.10

screw

Sensor cover 䋨screw hole is u

side䋩

Fig. 7

Fig. 8

Fig. 9

Fig. 12

Fig. 11

INSTALLATION

Wiring

1. Harness (a white connector) from the solenoid valve is connected to the connector of the upper same

color of the back-up system.

2. It passes through the wiring ass’y DS (one white connector and two red connectors) from the door switch ass’y from the outside of the solenoid, and each upper of the back-up system ass’y is connected with the connector of the same color.

3. Wiring ass’y BP (white connector) from the freezer itself is connected with the connector of the upper same color of the back-up system ass’y.

WARNING

There is a terminal (AC 100V) of the high voltage in the back-up system. Attach the back-up unit cover before starting the trial operation. The operation without the cover may cause electric shock.

Connect the connection of the connector until you have clicking sound.

CONTROL PANEL

1. Power switch of back-up system (BACKUP)

When turning on the system, the back-up stand-by on the door switch ass’y is brightened. This means

Control panel for CVK-UB4

BACK UP STANDBY

BATTERY

Door switch ass’y for CVK-UB4

that the system is ready. When this switch is turned off, the operation of the back-up system stops,

and a back-up stand-by lamp turns off the lights.

2. Test switch (TEST)

This button switch is for checking the operation of back-up system. Pressing this switch is resulted in the release of LCO

gas into the freezer chamber with regardless the condition. A battery lamp

is turned on when battery capacity decreases at this time. Push a back-up test switch for the life test of the battery sometimes.

3. Temperature setting knob (TEMP. SET) With this knob, set the temperature at which the system is operated. The effective set temperature range is between -50

4. Back-up stand-by lamp (BACKUP STANDBY)

C and -70oC.

It is the lamp turned on by ON/OFF of the back-up power switch. (GREEN color)

5. Battery lamp (BATTERY) A power failure and a back-up test switch are pushed, and CO2 gas appears, and it is turned on when battery capacity decreases.(ORANGE color).

CAUTION

Batteries are expendable supplies. Exchange it for about every three years. And, entrust a dealer or sales with the exchange of the battery, and cooperate with recycling of the battery after the use. When a battery declines by the power failure, a back-up unit stops working, and an exchange is recommended because a contents thing can not be protected any more.

TRIAL OPERATION

Following is the procedures for the trial operation of the back-up system. Read an instruction manual enclosed with a ultra-low temperature freezer carefully before the trial operation.

1. Check that the gas cylinder connect pipe is connected properly between the LCO the gas cylinder. The connection should be done by qualified engineers or service personnel only.

2. Set the ultra-low temperature freezer at desired temperature and run the freezer until it reaches the set temperature.

Note: CO

back-up system if the set temperature of the freezer is higher than that of the back-up

temperature.

3. Set the temperature setting knob to the temperature 10

the freezer.

4. Turn on the back-up system with the freezer door closed. Check that the indicator on the door switch ass’y is on.

5. Press the test switch to check that the CO

Stop the operation immediately and contact your dealer or sales representative if there is something wrong with the back-up system during the trial operation and it is still existing after careful check of the procedure.

gas will be released automatically without pressing the test switch when turn on the

C or more higher than the set temperature of

gas is released into the freezer chamber.

solenoid valve and

WARNING

Check the gas piping before trial operation to avoid gas leakage. Attach the back-up unit cover before starting the trial operation. The operation without the cover may cause electric shock.

CAUTION

Stop the operation immediately and review the attachment procedure carefully if there is something wrong with the back-up system during the trial operation.

Calibration

In the case that there is a difference between the chamber temperature and displayed temperature, Adjust the displayed temperature by the method of the service technical manual.

SPECIFICATIONS

Name Back-up System for Ultra-Low Temperature Freezer

Model CVK-UB4 CVK-UB4(I)

Outer dimensions W286 x D87 x H520 mm

Applicable model MDF-C8V

Applied gas Liquid CO2 gas

Temperature control Gas type thermostat

Door switch Door operation-related ON/OFF

Indicator Back-up switch-related ON/OFF

Accessories Mounting kit (except for gas cylinder)

Tank connecting tube: mm size Power source AC 115 V / AC 230 V (supplied from a freezer)

Battery DC 24 V, 4 Ah, Automatic recharge

Weight 11 kg

Optional component Mounting plate (MDF-UBK)

Note :Design or specifications will be subject to change without notice.

The battery for power failure alarm is an article for consumption. It is recommended that the battery will be replaced about every 3 years. Contact Sanyo sales representation or agent at the time of replacement of the battery for recycling.

Mounting kit (except for gas cylinder)

Tank connecting tube: inch size

PERFORMANCE

Temperature range -50 to –70oC

Duration

Maximum power consumption 6 W

Usable environment Temperature; -5 to +30oC, Humidity; Less than 80% RH

Note:

The back-up system is operated with an installed battery in the event of power failure. About two-day operation of a freezer is necessary to full charge the battery.

Approx. 13 hours (liquid CO

(ambient temp.; 30

C, set temp.; -70oC, no load,)

gas cylinder of 30 kg)

JK1659-150B

Sanyo MDF-C8V Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual