-40°C Upright Freezer LUF-T2042

Introduction

-40°C Upright Freezer is an upright type unit comes with 778 of cooling performance. Features -20 to -40°C of temperature control range with high-precision microprocessor temperature control system and platinum resistor temperature sensors. Designed with sprayed high quality steel plated housing and galvanized steel sheet interiors, has 2-layer heat insulating foamed door with rotating handle and 3 shelves. Equipped with international branded compressor and powerful fan with large area-finned condenser, has direct cooling method with manual defrost mode. Incorporated with R290 refrigerant and advanced alarm system, has turn-on delay and stopping interval protection function and keyboard lock function with password protection function. With digital display and standard RS485 interface, supports remote alarm contact along with optional chart recorder and printer to facilitate the temperature monitoring and recording. This laboratory freezers is designed to meet the rigorous requirements of modern laboratory operations, ensuring high precision, reliability, and ease of use for various experimental applications.

Applications

-40°C Upright Freezer is used for scientific research, cryogenic test on special materials, low temperature resistance test on biological materials, vaccines, biological products and military products etc. across research institutions, the electronic industry, the chemical industry, hospitals, the health & disease prevention system, laboratories in colleges & universities, military enterprises, etc.

Specifications

Cabinet Type	Upright
Capacity	778 L
Temperature Range	-20 to -40°C
Ambient Temperature	16 to 32°C
Cooling Performance	-40°C
Cooling Method	Direct cooling
Defrost Mode	Manual
Refrigerant	R290
Climate Class	N
Controller	Microprocessor
Display	Digital display
Compressor	2 pcs.
Alarm System	High/Low temperature, High ambient temperature, Power failure, Low battery, Sensor failure, Condenser cooling failure, Door ajar, System failure, Main board communication error, Built-in datalogger failure
External Material	High quality steel plates with spraying
Internal Material	Galvanized steel sheet
Insulation thickness	130 mm
Shelves	3 (stainless steel)
Casters	4 (2 leveling feet)
Door lock with Key	Yes
Access Port	3 pcs. Φ 25 mm
Data Logging/Interval/Recording Time	/Record every 10 minute / 2 years
Backup Battery	Yes
Power Supply	220 to 240 V, 50 Hz
Rated Current	8.47 A
Internal Dimension (W×D×H)	865×696×1286 mm
External Dimension (W×D×H)	1205×1025×1955 mm
Packaging Dimension (W×D×H)	1320×1155×2171 mm
Net Weight	286 kg
Gross Weight	386 kg

Features

An upright type unit with 778 L capacity having -40°C of cooling performance

-20 to -40°C of temperature control range with microprocessor temperature control system

Platinum resistor temperature sensors, ensures precise and uniform temperature

Sprayed high quality steel plated housing and galvanized steel sheet interiors

2-layer heat insulating foamed door with rotating handle, easy operation

3 adjustable shelves, organized and efficient storage of different samples

International branded compressor and powerful fan with large area-finned condenser

Direct cooling method with manual defrost mode, efficient refrigeration conditions

R290 refrigerant, energy efficient and environment friendly

Advanced alarm system with turn-on delay and stopping interval protection function

Keyboard lock function with password protection, prevents unauthorized access

Digital display, convenient setting and monitoring of temperature parameters

Standard RS485 interface and remote alarm contact, easy and convenient operation

Optional chart recorder and printer to facilitate the temperature monitoring and recording

High-efficient, stable and reliable unit for targeted refrigeration of different samples

FAQs

1. What are the key factors to consider when selecting this laboratory freezers for laboratory use?

When selecting this laboratory freezers, key factors include: 1) The instrument's precision and accuracy to meet experimental requirements; 2) Compatibility with the types of samples and applications you will be working with; 3) Ease of use and maintenance requirements; 4) Safety features to protect operators and samples; 5) Calibration and certification requirements; 6) Cost-effectiveness and long-term reliability; 7) Technical support and service availability from the supplier. Evaluating these factors ensures that the instrument meets your laboratory's specific needs.

2. How often should this laboratory freezers be calibrated to ensure accurate results?

It is recommended to calibrate this laboratory freezers at least once every 6-12 months under normal usage conditions. More frequent calibration (every 3-6 months) may be necessary if: 1) The instrument is used continuously for extended periods; 2) It is exposed to harsh environmental conditions (temperature fluctuations, humidity, dust); 3) It is used for critical applications requiring high precision; 4) The instrument has been moved or subjected to physical shock; 5) Calibration checks indicate significant deviations from standard values. Always follow the manufacturer's calibration guidelines.

3. What are the common maintenance procedures required for this laboratory freezers?

Common maintenance procedures include: 1) Regular cleaning of the instrument's exterior and sample contact surfaces to prevent contamination and ensure proper operation; 2) Inspection of moving parts (if applicable) for wear and lubrication as recommended by the manufacturer; 3) Replacement of consumable parts (filters, bulbs, reagents) according to usage guidelines; 4) Verification of performance parameters (temperature, pressure, voltage) regularly; 5) Storage of the instrument in a clean, dry environment when not in use; 6) Keeping a maintenance log to track service activities and identify potential issues early; 7) Following the manufacturer's specific maintenance schedule for optimal performance and longevity.

4. Can this laboratory freezers be used with different types of samples, and are there any compatibility considerations?

Yes, this laboratory freezers can be used with a variety of sample types, but compatibility considerations are important: 1) Check if the instrument's materials are compatible with the chemical composition of your samples (avoid corrosive or reactive substances that may damage the instrument); 2) Ensure that the sample volume and concentration are within the instrument's recommended range; 3) For biological samples, consider sterility requirements and potential cross-contamination risks; 4) For volatile or hazardous samples, ensure proper ventilation and safety precautions are in place; 5) Consult the manufacturer's documentation for specific sample compatibility guidelines, and perform compatibility tests with new sample types before regular use.

5. What should be done if the laboratory freezers malfunctions or produces inconsistent results?

If malfunctions or inconsistent results occur: 1) First, check the instrument's user manual for troubleshooting guidelines specific to the issue; 2) Verify that the instrument is properly calibrated and within its calibration period; 3) Inspect for obvious issues such as loose connections, damaged parts, or incorrect settings; 4) Clean the instrument thoroughly to remove any contamination that may affect results; 5) Repeat the experiment with a known standard sample to determine if the issue is with the instrument or the sample; 6) If the problem persists, discontinue use of the instrument to prevent further damage or inaccurate results; 7) Contact technical support or a qualified service technician for diagnosis and repair, providing details of the issue and any troubleshooting steps already performed.