Troubleshooting, Malfunction Check/Remedy

TROUBLESHOOTING

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

Malfunction	Check/Remedy
The chamber is not cooled	￭ The circuit breaker of power source is active.
at all	￭ The voltage is too low? (In this case, call an electrician.)
	￭ The power switch is not ON.
	￭ The large amount of articles (load) is stored in the chamber at one
	time.
	￭ The freezer is in defrost condition.
The cooling is poor	￭ The ambient temperature is too high.
	￭ The door is not closed firmly.
	￭ The large amount of frost is built on the chamber wall.
	￭ The set temperature is not inputted properly.
	￭ The freezer is in the direct sunlight.
	￭ There is any heating source near the freezer.
	￭ A rubber cap and insulation for the access port are not set correctly.
	￭ You put too many unfrozen articles into the freezer compartment.
When the unit does not	￭ The key lock is set in ON.
accept changes of set-point
temperature
Noise	￭ The freezer is not installed on the sturdy floor.
	￭ The freezer is not leveled with the leveling feet.
	￭ There is anything touching the frame.
	￭ 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.
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.

MDF-U730M specifications

Sanyo, a renowned brand in the field of scientific equipment, has developed a range of high-performance medical and laboratory refrigerators and freezers, including the MDF-U730M, MDF-136, MDF-U730, MDF-436, and MDF-236 models. These units are designed to meet the strict requirements of healthcare facilities, research laboratories, and biological storage applications.

The Sanyo MDF-U730M is a top-of-the-line ultra-low temperature freezer offering outstanding temperature stability and energy efficiency. It features a temperature range of -50°C to -86°C, making it ideal for storing sensitive biological samples. This model is equipped with advanced microprocessor control, which ensures accurate temperature regulation. The unit also includes a built-in alarm system for monitoring and alerts in case of temperature fluctuations, ensuring sample safety.

The MDF-136 is a compact yet spacious model designed for everyday use in labs where space may be limited. It offers a temperature range of -10°C to -20°C and is equipped with an efficient refrigeration system, providing consistent and reliable cooling. This unit has a robust design, featuring positive air circulation which enhances temperature uniformity throughout the interior.

The MDF-U730 offers versatile storage with an adjustable shelving system to accommodate various sample sizes. It is ideal for long-term storage, with a temperature range extending from -50°C to -86°C. This U730 model is also highly praised for its energy-efficient properties, helping institutions control operational costs while maintaining optimal sample integrity.

The MDF-436 stands out due to its dual refrigeration system, ensuring fast temperature recovery after door openings. With a temperature range of 2°C to 8°C, it is perfect for storing vaccines and sensitive pharmaceuticals. This model incorporates a user-friendly interface as well as a detailed digital display for easy temperature monitoring.

Lastly, the MDF-236 is known for its compact design, combining reliability with exceptional performance. It operates efficiently within the same temperature range as the MDF-436, making it suitable for similar applications. Its compact size makes it an excellent choice for laboratories with space constraints while still providing ample storage for essential materials.

Overall, Sanyo's lineup of MDF series freezers and refrigerators is characterized by their robust construction, advanced technology, and a focus on energy efficiency and temperature stability, ensuring the safe storage of vital biological materials in laboratory and medical environments.