Ultra deep freezer 838 l -40℃～-86℃

1. Double cascade refrigeration system, using fluorine-free environmentally friendly alkane refrigerant, energy savings 50%

2. VIPIIPLUS second generation vacuum insulation board technology.

3. Product design optimised for biological sample storage, providing space for up to 40,000 samples

4. All noise-generating components are made of special material with vibration damping properties, high-density refractory sound-absorbing cotton is placed around the ultra-low temperature cooler.

5. microprocessor control, the internal temperature of the ultrasonic cooler can be adjusted from -60 to -86 °C, overtemperature alarm, power failure reminder, and the setting accuracy is 0.1 °C;

6. -86C series product with internal and external temperature difference up to 110 °C, special polyurethane foam insulation layer to avoid cracking and deformation, 150 mm insulation thickness to ensure internal temperature stability

7. The inner door is removable for easy melting and cleaning

**Security**

Fault alarms including high and low temperature, power failure, sensor failure, filter cleaning required, extremely high ambient temperature, abnormal voltage, thermostat failure, low battery level, capacitor cleaning required, open door.
Visual and acoustic alarms.
Door opening function and USB port for downloading temperature data are standard on stationary models.
Remote alarm contacts.

**Energy saving**

Unique door seal design for minimum loss of cold temperature during door opening.
High-efficiency insulating panels to minimize cabinet heat gain and improve temperature stability.
HC refrigerant for improved efficiency and lower energy consumption.

** Main features**

Microprocessor-controlled system designed for a temperature range of -40°C to -86°C in 1°C increments in the cabinet compartment.
Depending on load requirements and environmental conditions, one or both cooling systems operate on demand, ensuring that samples are fully protected even in the worst conditions.
Optional temperature clamp, storage racks and box.

**Installation and application**

Wide operating voltage range from 187V to 242V, allowing installation in low voltage areas.
Suitable for ambient temperatures from 10°C to 32°C.

**CO2 and LN2 backup system**

Independent CO2 back-up system, LN2 back-up system for ultra low temperature freezers in case of failure and power failure.
The standby refrigeration system consists of a control system and a supply connection system.
The opening and closing of the solenoid valve is controlled by its own temperature sensor. The liquid nitrogen tank or the liquid carbon dioxide tank, as a reserve, is connected via a solenoid valve.

The solenoid valve is powered by an internal rechargeable battery.