Trouble Shooting

If the unit malfunctions, check out the following before calling for service, after transferring all the contents to another freezer

No refrigeration

￭The voltage is too low. (In this case, call an electrician.)

￭The breaker is free.

￭The fuse is blown.

Sometimes the freezer is not cooled at all for about 5 minutes after starting-up.

Poor refrigeration

￭The ambient temperature is too high.

￭The door is not shut tightly.

￭The inner lid is not installed correctly.

￭The set temperature in the controller is not set properly.

￭The grille is blocked out.

￭The filter is clogged. Clean the filter when the filter check lamp lights.

￭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.

￭Too much frost is accumulated in the chamber.

Noise

￭The freezer is not installed on the sturdy floor.

￭There is anything touching the frame.

￭The freezer is not leveled with the leveling feet.

￭It is the immediately after starting of refrigeration.

The freezer causes larger noise when the chamber temperature is high because of large load. The noise gets smaller along with chamber temperature.

Alarm test key cannot actuate the alarm function

￭The alarm test key does not function when the power switch of the freezer is OFF.

￭When only the buzzer or only the alarm is actuated by the alarm test key, the unactuated part is out of order, and must be replaced.

Recorder does not operate normally (AT type only)

￭If the chart is not advanced, examine the dry cell. Replace the cell for recorder every 1 year.

￭If the temperature is not recorded, examine the recording pen. The pen should be our specified one.

Back-up test switch does not operate normally (AT type only)

￭The liquid CO2 cylinder is empty.

￭The valve of the liquid CO2 cylinder is not opened.

￭The ambient temperature is too high. In this case, move the liquid CO2 cylinder to a cool location. Inquire at liquid CO2 suppliers about cylinder check, adjustment, installation, or move.

MDF-593C, MDF-793C specifications

The Sanyo MDF-793C and MDF-593C are advanced laboratory refrigeration models designed for a variety of applications in research, medical, and industrial settings. Both units embrace cutting-edge technologies and engineering innovations to provide reliable performance while ensuring specimen preservation and optimal storage conditions.

One of the key features of the Sanyo MDF-793C is its ability to maintain a consistent temperature range from -10 to -30 degrees Celsius. This wide range allows users to store a variety of sensitive materials, including biological samples, medications, and vaccines. The unit is equipped with a microprocessor-controlled temperature management system, which offers precise temperature monitoring and control. Additionally, the unit includes a rapid cooling system that ensures quick recovery after door openings, minimizing temperature fluctuations that can compromise stored materials.

The MDF-593C, while slightly smaller in capacity, also offers impressive temperature control and stability. It is designed to have an internal temperature range of -10 to -25 degrees Celsius. Its compact design makes it suitable for labs with limited space, without compromising performance. Both models utilize environmental-friendly refrigerants, which align with current sustainability practices and regulations.

In terms of technological advancements, both models include digital displays that provide real-time temperature readings. These displays come with alarms that notify users of any aberrations, ensuring the highest levels of monitoring and security. The integration of a high-efficiency compressor not only supports rapid cooling but also contributes to lower energy consumption, making both the MDF-793C and MDF-593C cost-effective options for long-term use.

Another standout characteristic is the robust insulation used in the construction of both units. High-density polyurethane foam enhances thermal efficiency and minimizes energy loss. This feature is essential for maintaining optimal internal temperatures while reducing the overall operational costs associated with energy consumption.

Both models also feature adjustable shelving and user-friendly designs, allowing for easy organization and access to stored items. Their durable construction ensures reliability while a sleek external design allows them to fit seamlessly into various laboratory environments.

In summary, the Sanyo MDF-793C and MDF-593C are exemplary choices for those seeking efficient, reliable, and environmentally sustainable refrigeration solutions. Their advanced technologies, coupled with user-friendly features, make them essential tools in ensuring the integrity of valuable samples across various fields.