Liebherr’s ultra-low temperature freezers (ULT) set the benchmark in the temperature range -40 °C to -86 °C. Take advantage of the low operating costs, sustainable cooling, the large interior with practical features and the numerous safety functions of the ultra-low temperature freezers. Place your trust in our extensive experience as a specialist in cooling and freezing.
Ultra Low Temperature Freezers
The ultimate way to store safely..
Liebherr’s ultra low temperature freezers (ULT) set the benchmark in the temperature range -40 °C to -86 °C: In terms of safety, performance and ease of use, they offer all you need for meeting the demanding requirements of laboratories and scientific institutions, for example. Take advantage of the low operating costs, sustainable cooling, the large interior with practical features and the numerous safety functions of the ultra-low temperature freezers. Place your trust in our extensive experience as a specialist in cooling and freezing.
Features Include:
Alarm messages in critical situations Don’t worry about security: Thanks to a three stage monitoring system, consisting of integrated alarm messages for temperature, door or mains faults, upgradable features such as CO2 emergency cooling and online monitoring ensure the very best protection for your stored samples at all times. In the event of a power failure, integrated 12-volt batteries immediately supply the electronics with power. You will also be notified in critical situations so that you can quickly rectify the fault.
Mechanical Key Lock The mechanical key lock protects the stored products from unwanted access. The door is opened with an ergonomic and unbreakable aluminium lever handle.
Minimal temperature fluctuations In order to maintain the quality of the stored samples, minimal temperature fluctuations are very important. The Liebherr ultra-low temperature freezers have the lowest possible fluctuations both internally within the appliance and over time.
Low heat generation Compared to older technologies, the efficient cascade cooling system with HC refrigerants generates significantly less heat. This saves costs in the thermal design of the room’s air conditioning system. If heat dissipation via the room air conditioning is not possible, the option with water cooling is also available.
Low energy consumption Ultra-low temperature freezers are among the devices with the highest energy consumption in research facilities. Liebherr ultra-low temperature freezers are among the most economical models on the market worldwide. In combination with highly insulating vacuum panels, the efficient cooling system allows for efficient operation, optimum energy savings and, as a result, low operating costs
Interfaces For remote monitoring, all appliances are equipped with potential-free contacts and ethernet interfaces. The temperature and alarm records can also be read via the integrated USB interface. Optionally, a 4-20 mA output enables the integration of the temperature value into existing systems for data recording
4 Years
Ultra Low Temperature Freezers
LIESUFSG5001
LIESUFSG7001
Total Gross / Net Capacity
491 / 477 litre
728 / 700 litre
Exterior dimensions in mm (w / d / h)
921 / 1085 / 1966
1205 / 1085 / 1966
Interior dimensions in mm (w / d / h)
606 / 605 / 1300
890 / 605 / 1300
Energy consumption in 365 days
2884 kWh
2957 kWh
Ambient temperature range
+16 °C to +32 °C
+16 °C to +32 °C
Heat output
1188 kJ/h
1224 kJ/h
Heat output system
Air Cooling
Air Cooling
Refrigerant
R290 / R170
R290 / R170
Sound power level
47 dB(A)
47 dB(A)
Connection rating
7.0 A / 1600 W
7.0 A / 1600 W
Frequency / voltage
50Hz / 230V~
50Hz / 230V~
Temperature range
-40 °C to −86 °C
-40 °C to −86 °C
External cabinet finish
Steel / White
Steel / White
Door material
Steel
Steel
Internal liner material
Stainless Steel
Stainless Steel
Type of control
Electronic Controller
Electronic Controller
Temperature display
External Digital
External Digital
Interface
LAN (Ethernet)
LAN (Ethernet)
Volt-free alarm contact
Yes
Yes
Data logger
Integrated, USB interface
Integrated, USB interface
Power failure alarm
Immediately upon power failure for 72 hrs
Immediately upon power failure for 72 hrs
Cooling system
Static
Static
Refrigeration +22 °C to −80 °C
360 min
450 min
Warming -80°C to -60°C / to 0 °C
230 min / 2160 min
250 min / 2220 min
Number / maximum number of storage shelves
4/13
4/13
Shelf material
Stainless Steel
Stainless Steel
Shelf loading
50KG
50KG
Number of racks per insertion
4
6
Max. number of cryoboxes, 50 mm / 75 mm
352/224
528/336
Castors
Castors with brake at the front, fixed castors at the rear
Castors with brake at the front, fixed castors at the rear
Racks for cryoboxes
Convenient and temperature-resistant storage systems for the clear way to store samples. Available as an aluminium or stainless steel rack for 5x4 or 6x4 50 mm boxes and as a stainless steel drawer rack for 5x4 or 6x4 50 mm boxes.
Cryoboxes
For safe storage and transport of valuable samples with a fi xed 9x9 grid. The robust and temperature-resistant cardboard boxes are available in sets of 36.
CO2 backup system
The CO2 backup system ensures that the cooling of the stored samples continues for up to 72 hours in the event of a power failure. The CO2 bottle is not part of the accessories.
Stainless steel storage shelves/foam inner doors
Additional robust stainless steel shelves for fl exible and individual partitioning of the interior. The foam inner doors provide the best possible insulation and temperature stability, ensuring effi cient cooling and low power consumption.
Cover for main switch incl. key lock
Protection against unintended disconnection or manipulation of the main switch
4-20mA analogue output
The 4-20mA interface displays the interior temperature as a current value, which for example can be imported into an independent system for recording or checking the internal temperature.
