Sanyo MDF-594C instruction manual BACK-UP System Option

Page 31

BACK-UP SYSTEM (Option)

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 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.

The freezer is provided with an automatic liquid CO2 gas injection device as a back-up system. This freezer prevents the chamber temperature from going up by injecting the liquid CO2 gas when the power supply is disconnected (power failure, disconnection of power cord, breaker OFF) or in the case of failure of freezer itself. The liquid CO2 gas is injected with the 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 CO2 gas cylinder

By using the joint and pipe enclosed with the freezer, connect the liquid CO2 gas 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 CO2 gas cylinder, operate the freezer until the chamber temperature reaches the required level.

3.Set the warning indicator of the temperature setting knob of the back-up system at the temperature higher than -70oC. The back-up system is operated continuously if the warning indicator is set at the temperature lower than -70oC. This means the liquid CO2 gas is consumed very quickly.

Rough scheme

Liquid CO2



gas cylinder

 

Battery

 

 

Solenoid valve

Pipe

 

 

 

4.Switch on the back-up system.

5.Make sure that liquid CO2 gas spouts into the freezer chamber by pressing the back-up test switch.

Note:

•The liquid CO2 gas cylinder loses its cooling capacity at speed when the ambient temperature is over 31oC. Install the liquid CO2 gas cylinder in the cool environment. And the duration of back-up time per one liquid CO2 gas cylinder varies depending on the ambient temperature. Refer to “Installation of back-up system” enclosed with the freezer for the available back-up time.

•The liquid CO2 gas cylinder should be a siphon type.

•Use the pipe encloses with the freezer for the setting. (The extension of the pipe is not permitted because of cooling capacity.)

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Contents MDF-594C MDF-793C Contents Introduction Precautions for Safe Operation Unqualified personnel may cause electric shock or fire Abnormal operation may cause electric shock or fire Precautions for Safe Operation Environmental Conditions Freezer Components Control panel cover LockControl panel Installation Site Fixing the unit InstallationAdjusting the leveling foot Removing the packaging materials and tapesSTART-UP of Unit Operation after power failureRemote Alarm Terminal Chamber Temperature SettingAlarm Temperature Setting Alarms & Safety Functions Setting of Alarm Resume TimeAlarm and safety function RED Black White Normal defrosting Routine MaintenanceThorough defrosting Handling of battery Replacement of BatteryLocation of a nickel-cadmium battery Removal of nickel-cadmium batteryMalfunction Check/Remedy TroubleshootingDisposal of Unit Recycle of batteryGerman EnglishSpanish FrenchPortuguese ItalianSwedish DutchReplacement of cell Feeding of chartPenholder Setting of back-up temperatureControl Panel Temperature Recorder Option BACK-UP System Option Performance SpecificationsSafety check sheet JK1035-150B
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MDF-594C specifications

The Sanyo MDF-794C and MDF-594C are advanced laboratory refrigerators designed for the safe storage of biological samples, vaccines, and sensitive materials. These models stand out due to their robust construction, user-friendly features, and innovative technologies that cater to the requirements of research institutions, hospitals, and laboratories.

One of the main features of the Sanyo MDF-794C is its large capacity, which makes it suitable for facilities with high storage demands. The refrigerator can accommodate a significant volume of samples while maintaining a stable internal environment. The MDF-594C, while slightly smaller, still offers ample storage space without compromising on performance.

Both models incorporate advanced cooling technologies, including a reliable compressor system that ensures rapid temperature recovery even during door openings. They are capable of maintaining temperatures ranging from -10°C to -30°C, ideal for a variety of laboratory applications. Temperature uniformity is a crucial aspect of sample preservation, and Sanyo’s state-of-the-art design guarantees even distribution of cold air throughout the cabinet.

Energy efficiency is another notable characteristic of the Sanyo MDF-794C and MDF-594C. These models are designed to operate with minimal energy consumption, thereby reducing operational costs and environmental impact. Additionally, they are equipped with a reliable insulation system, which helps maintain consistent temperatures while minimizing energy loss.

User-friendliness is emphasized in the design of both refrigerators. They feature intuitive, programmable digital control panels that allow users to set and monitor temperatures easily. The alarms for temperature deviation and system malfunctions ensure that users are promptly alerted to any issues, enhancing safety and reliability.

Another significant feature is the inclusion of a self-diagnostic system in both models, which continuously monitors the performance of the unit. This capability aids in early detection and troubleshooting, thus maintaining optimal operating conditions.

The Sanyo MDF-794C and MDF-594C also prioritize hygiene and cleanliness, with easy-to-clean interiors that help prevent contamination. Their design allows for easy organization of samples, thus improving workflow within the laboratory.

In conclusion, the Sanyo MDF-794C and MDF-594C are exemplary laboratory refrigerators characterized by their capacity, advanced cooling technologies, energy efficiency, user-friendly controls, and commitment to sample safety. These attributes make them invaluable assets in any laboratory setting, ensuring the integrity and reliability of stored materials.
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