Ultra-Low Temperature Freezer

An ultra low-temperature freezer comprising: a casing that includes an exterior body having a first side surface and a second side surface laterally facing each other, an interior body provided inwardof the exterior body and having a forward-opening accommodation space formed therein, a heat insulation material provided between the exterior body and the interior body, an evaporator disposed between the exterior body and the interior body so as to enclose a storage space, and a polyurethane provided between the heat insulation material and the interior body; a hinge that includes a first hingepiece and a second hinge piece, with the first hinge piece being attached to the second side surface; and an outer door that has a third side surface and a fourth side surface facing the third side surface, with the second hinge piece being attached to the fourth side surface. The outer door includes an inner surface closing off the accommodation space when closed and an outer surface provided forward of the inner surface, a heat insulation material comprising a vacuum heat insulation panel provided to the inner surface side, and a polyurethane provided between the heat insulation material and the outer surface.

• A leader in the development of controlled environment, laboratory and pharmaceutical equipment solutions.
• A world leader in biological safety cabinets.
• Esco has established offices in 13 countries such as Bahrain, China, India, Japan, Korea, Malaysia, Philippines, Singapore, South Africa, UK, US, Indonesia and Vietnam and is continually expanding.
• North American facilities in Pennsylvania; sales, service, logistics for US & Canada.
• Group total of more than 600 employees.
• Distributors in more than 100 countries.
• Products independently tested to international standards.
• State-of-the-art production; vertically integrated manufacturing floor space.
• Worldwide service played out over a geographic expanse so broad that the sun never sets on what we do.

Welcome to Esco
Esco's Vision is to provide enabling technologies for scientific discoveries to make human lives healthier and safer.

OR 5 INDIVIDUAL INNER DOORS
-Triple gasket seal provides maximum protection against thermal intrusion.

EXCELLENT DOOR SEALS
-High-performance reliable compressors -System is optimized to provide maximum efficiency in even the most extreme ambient conditions Superior performance, lower energy costs, better protection.

MODERN REFRIGERATION COMPONENTS
All freezer components were selected from many tear-down and comparison tests. Only the most reliable components were selected.
• Danfoss ® compressors are reliable and have high performance.
• Danfoss ® filter drier is optimized for HFC refrigerants and uses 100% 3Å molecular sieve core for high moisture drying capacity. (Moisture equates to clogs in the system!).
• Condenser is oversized by design to provide a greater capacity for cooling.
• Condenser fans generate high airflow and have quiet operation.
• Energy-efficient high performance oil separator eliminates solid contaminants along with excess oil from the system and enhances the entire system's performance.
• One seamless full wrap copper evaporator tube with no joints reduces any possibility of leaks in the field.
• Highly efficient corrosion resistant and pressure resistant heat exchanger used for maximum heat transfer.

QUALITY COMPONENTS
Accelerated Life Test at 40°C -43°C Ambient • Less heat emission than conventional ULT freezers of similar size.
• Substantial savings on air-conditioning costs.
• Only CFC-free blowing agent is used.
• Only environmentally friendly CFC-free and HCFC-free HFC refrigerants are used.
• CFC and HCFC compounds have high impact on the ozone in the Earth's atmosphere, whereas HFC does not contain chlorine and is not harmful to the earth's atmosphere.
• Biodegradable, high-performance synthetic polyolester oil is used. • Esco Lexicon ® II has a short pull down time which signifies an efficient refrigeration system.
• Esco Lexicon ® II recovers temperature in minutes following a 1 minute door opening. Fast recovery in temperature ensures integrity of stored samples.
• Uniformity test measures the difference between the coldest spot and warmest spot in the freezer chamber when the freezer is operating at set temperature.
• Esco Lexicon ® II has excellent uniformity under normal operating conditions. This guarantees that all samples are at the correct temperature. Warm-up time from -80°C to -50°C • Warm-up time measures the time taken for temperature to rise up (from -80°C to -50°C) when the power is interrupted.
• With a robust insulation system in place, Esco Lexicon ® II has the best warm-up time among the freezers compared on the right. Slower warm-up during an extended power failure buys the user time for carrying out a back-up plan. • Reserve capacity test records the lowest temperature the freezer is able to sustain when a heat source is placed in the freezer. This resembles real life situations when hot samples are placed in the freezer. The lower the temperature the freezer can sustain, the higher chance the freezer can maintain the set temperature when warm samples are placed in the freezer.

EXTENDED WARM-UP TIME DURING A POWER FAILURE
• Esco reserve capacity surpasses that of all major brands tested below.
• According to OSHA 1910.95 Occupational Noise Exposure Regulation, the sound level of the work place has to fall below 90 dBA for an employee who works 8 hours/day.
• Total noise in a lab is highly dependent upon the equipment that emits the greatest amount of noise.
• Esco Lexicon ® II ultra-low freezer has a noise level of approximately 56 dBA. This ensures a quiet and pleasant working environment for lab users. • Embedded thermocouples in the foam for easy field troubleshooting.
• Filter driers are located at the deck for easy replacement.
• Adjustable main door hinge and latch.
• Condenser filter is conveniently located at the front of the freezer. This allows easy access for inspection, cleaning and/or changing.
• 5-year warranty on compressors, 5 years on complete system.

QUICKOPEN TM FAST DOOR RE-OPEN SYSTEM
• 2-Stage cascade refrigeration system.
• Two fans are employed to draw consistent airflow from the front to the back of the freezer to cool the condenser.
• Two 1-hp hermetic compressors operated at a low speed for longer life.
• The compressors sit directly behind the fans and are air-cooled for better operating conditions.

HeatRecycler™ Technology allows efficient recycling of the heat generated by the system. This reduces power consumption and prolongs the life of the freezer.
Outer wall

Insulation
Inner chamber wall Mullion Heater • Two additional "heat exchangers" to channel heat energy.
• "Mullion heater" recycles excess heat from 1st stage compressor to heat up main door gasket. This prevents ice from forming on the gasket and provides easy door closing.
5'' thick polyurethane foam is placed in the main cabinet and 4.5'' on the door.
Ergonomically designed door handle allows one-handed door opening.
Triple gasket seal protects against thermal leaks and prevents frost build-up.

OPTIONS AND ACCESSORIES Chart Recorder Kit (5070512-U)
The chart recorder provides an easy-toread graph of data vs time. It is a reliable, accurate, and stable instrument, for on-thespot written documentation of freezer chamber temperature. This model offers a 6" chart of temperature data.
Kit includes the 6" temperature chart recorder,1 pack pen replacement,1 pack 7-day paper and universal outlet.

LCO2 Back-up System (5170438-U)
LCO 2 back-up system injects liquid CO 2 on demand when cabinet temperature warms to a pre-set level. Back-up system kits include all hardware except the supply cylinder. In the event of a power failure, the system will operate on a charged battery.

Ice Scraper (1260040-U)
Ice scraper is available for cleaning ice built up on door gasket, PEP and other places in the freezer.

Cryo Safety Gloves (1260039-U)
Mid-arm style cryo safety gloves are available for use with ultra-cold surfaces. Cryo safety gloves protect hands and arm when inserting or removing inventory.

Voyager ® Software Kit (5250001-U)
Esco Voyager ® is a PC-based software package developed for the remote monitoring, datalogging and programming / device configuration of Esco controlled environment laboratory equipment. Compatible equipment includes Laboratory Ovens and Incubators, Low Temperature Incubator, CO 2 Incubators and Ultra-Low Temperature Freezer

PROtect -Independent and Redundant Monitoring System (5250001-U)
• PROtect has no dependency on the freezer electronics so in the event of a catastrophic failure that would prevent all other systems from notifying the user, PROtect can provide the necessary alerts to protect your irreplaceable samples.
• Multiple installations in remote buildings can be monitored and multiple users can access the system simultaneously.
• The monitored cold storage device communicates to the central monitoring computer by radio frequency transmission allowing for long communication distances and extended battery life.
• Can be used to monitor up to 99 systems on a single software package or more systems/multiple locations with an optional software package.

IQ/OQ Protocol (9010101-U)
IQ/OQ protocol document is available for verifying that the equipment has been installed in accordance with installation specifications and is functioning and operating at the intended operational parameters.

INTELLIGENT REMOTE MONITORING APPLICATION PROTOCOL (IRMAP) SERVICE
• Lexicon ® II freezers with the Aalto controller can communicate with Voyager ® via RS485 connection.
• All information is kept securely inside the facility firewall. Once connected, Voyager ® can notify users from a central location of any freezer alert or condition that can threaten sample safety or integrity.
• Voyager ® can communicate with the available intelligent Remote Monitoring Application Protocol service (iRMAP).
• With iRMAP optional service, Esco will remotely monitor your Esco freezers in case of issues that might threaten your samples, Esco will call the supplied customer contact to provide assistance.
• iRMAP allows Esco to guard your samples 24 hours a day/7 days a week. Esco can even provide proactive service response if the predictive failure monitoring system finds a fault in your Esco freezer.
• If the user elects to transmit data outside of their facility, then Voyager ® will encrypt the data twice and allow the freezer data to be monitored by iRMAP services at the Esco monitoring headquarters.