ALARMS & SAFETY FUNCTIONS

This unit has the alarms and safety functions shown in Table 4, and also self diagnostic functions.

Table 4 Alarms and safety functions

Alarm & Safety

Situation

Indication

Buzzer

Safety operation

High temperature

If the chamber temperature

Alarm lamp is flashed.

Intermittent tone after

Remote alarm is

deviates by +10oC (factory set,

Temperature indicator is

activated after a delay

alarm

changeable) from setting.

flashed.

a delay 15 minutes.

of 15 minutes.

 

 

Low temperature

If the chamber temperature

Alarm lamp is flashed.

Intermittent tone after

Remote alarm is

deviates by -10oC (factory set,

Temperature indicator is

activated after a delay

alarm

changeable) from setting.

flashed.

a delay 15 minutes.

of 15 minutes.

 

 

 

In the case of power failure.

 

 

 

Power failure alarm

When power switch is turned OFF.

Alarm lamp is flashed.

Intermittent tone

Remote alarm is

When the power to the unit is

activated.

 

 

 

 

disconnected.

 

 

 

Door alarm

When the door is open.

Door check lamp is lit.

Intermittent tone after

-----

a delay of 2 minutes.

 

 

 

 

 

If a key operation is not performed

Chamber temperature is

 

Setting mode is

Auto return

for about 90 seconds in each setting

-----

displayed.

canceled.

 

mode.

 

 

 

 

 

Key lock

When the key lock is ON (L1).

-----

-----

Key input is unable.

 

 

 

 

 

 

 

Alarm lamp is flashed.

 

Remote alarm is

 

If the thermal sensor goes

 

activated.

 

E1 and LO are displayed

Intermittent tone

 

open circuit.

Operation is keeping

 

alternately.

 

Thermal sensor

 

 

continuously.

 

 

 

Abnormality

 

Alarm lamp is flashed.

 

Remote alarm is

 

If the thermal sensor goes

 

activated.

 

E1 and HI are displayed

Intermittent tone

 

short circuit.

Operation is keeping

 

alternately.

 

 

 

 

continuously.

 

 

 

 

 

 

 

 

Remote alarm is

 

In case of failure of compressor

 

 

activated.

Compressor temp.

cooling fan motor.

-----

Intermittent tone

Compressor stops

Abnormality

In case of abnormal high ambient

running when the

 

 

 

temperature.

 

 

temperature about

 

 

 

 

95oC.

Note:

The alarm can be canceled by pressing the alarm buzzer stop key (BUZZER), but the remote alarm cannot be silenced.

After a power failure, the unit will resume operation with the set value that was in place before power failure occurred.

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Sanyo MDF-U730M instruction manual Alarms & Safety Functions, Alarms and safety functions

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.