Upright Freezers up to -40°C/-85°C For long-term storage and quality control. Microprocessor controlled temperature regulation: The microprocessor controlled temperature regulator: with digital display of actual and set temperature values operates without maintenance and is shock-resistant. The regulator is battery-backed by constantly charged NiCd battery that maintains the display of the actual temperature and the alarm functions for 60 hours in the event of mains failure. RS-232 interface for monitoring and data registration via PC. Optional with RS-422 or RS-485. Energy-saving: maintenance-free cooling unit: According to the UVV accident prevention regulations. With full-heat high-performance compressors: short heating-up times. Non-flammable safety refrigerant. All-round insulation (up to 150 mm thick: jointless and diffusion-tight foamed polyurethane layer). Ex-proof inside cabinets: According to BG-I 850-0: version 02/2009: stainless steel. Direct refrigeration from all sides: high freezing speed throughout the working area and even temperature distribution. The magnetic sealing system prevents the lid and door seals from freezing. Controlled access: The lids and doors of the freezer units can be locked: multifunctional control panel provides controlled access through the use of a key-operated security switch. Multiple alarm messages: All deep freezers include a potential-free: changeover contact for connection to an internal alarm system or to the central I&C system as standard. In the event of a fault an optical and audible alarm is issued. The cause for the fault is shown in the display as a defined code number. The limit values for alarms (1-20 K) for excess and under temperature can be set individually by the user. Optional suppressions of alarm messages can also be set by the user. Powder-coated housing: The housings are made of powder-coated: electrolytically galvanized sheet steel. As standard: GFL deep freezers are mounted on double wheel: swivel castors: two of which can be locked: for transport to the place of use and for mobile applications (castors for the sub-counter Deep Freezers 6441 and 6481). Customised equipment available on request: for tasks that demand special solutions for storage. Additional facilities such as CO2-LN2-safety cooling systems: manifolds for CO2 safety cooling: water and ice water cooling: check log: set of drawers and shelves for freezers: storage system line printer or temperature data logger on request. Upright freezers of 300 litres and 500 litres are equipped with three inner compartments (H 353mm): each provided with an insulating door. Optional shelves can also be installed in the compartments. On request: the cabinet can also be equipped with a set of drawers instead of the inside compartments. After removing the cover plate: the sub-counter Deep Freezers 6441 and 6481 can be built into a laboratory bench. 6443 : Capacity 300 Litres: External dimensions (W x D x H) 990 x 865 x 1940 mm: Internal dimensions (W x D x H) 600 x 450 x 1100 mm: Rating 0.60 kW: Temp. range 0 to -40 °C: Weight 240 kg
