VERTICAL FREEZERS AT −20°C −30°C ELITE LINE
DESCRIPTION
KW offers a new featured series of vertical freezers for laboratory and biological tasks, with small and medium volumes. The structure has removable drawers, for better use of the internal volume and lower power consumption, in addition to adequate insulation thickness. The fully sealed execution of the refrigerating circuit and the use of airtight compressors make these freezers a silent and reliable option, even in critical environmental conditions. The materials and the fluids being used are all natural and environmentally friendly, and particular attention is paid to problems dealing with the ozone layer and greenhouse effect.
The refrigeration technology uses evaporation trays; they subtract heat from the materials in storage in a fast, direct fashion, and thus there is no need for defrosting. The solution guarantees maximum stability in the conservation temperature in addition to good (T) uniformity. There is no need to defrost after a while.
The instruments furnished are typical for high-level professional and scientific refrigerators and freezers, including SLC or NIA controllers. Temperature is regulated with digital electronic devices that have digital LED displays, with min./max. T alarm and contacts for remote alarm signalling.
The door can be closed under lock and key.
A broad range of accessories allow users to customise the freezers to suit their needs.
The external structure is made of a cabinet with rounded profile in white enamelled steel sheets, and reversible door with magnetic gaskets and key lock. The door handle has an internal opening mechanism that allows manoeuvring with minimum effort on the part of the user. The cabinet comes with support feet on the front and small pivoting wheels on the back, in order to facilitate transportation and placement inside the laboratory.
The internal compartment is in white plastic material: non-abrasive ABS with completely rounded edges to facilitate cleaning. Average insulation thickness about 80 mm, with highly environmentally-friendly polyurethane resin foamed on site. This, together with the use of drawers, guarantees optimum capability against thermal dispersion, resulting in really low power consumption. The drawers, in plastic materials, close the space between an evaporation tray and the other, preventing the escape of cold every time the user opens the freezer counter doors and offering the best organisation for the storage of biological products.
Evaporation trays subtract heat from the materials in storage in a fast, direct fashion, and without the need for defrosting, guaranteeing maximum stability and uniformity in conservation temperature: thus, they contribute to increase the quality of laboratory activities wherever they are installed.
THE CONTROL PANEL SLC brings together a simple, modern design and great ease of use. Electronic devices keep the set value reliably and accurately; the digital LED display allows fast monitoring of T values inside the compartment. This monitoring also guarantees the total safety of the stored biological material, including sound (buzzer that can be muted) and visual alarms; they rapidly inform users about undesirable T variations, and with the remote alarm kit these signals can be sent to other sites.
It is also possible (optional) to have power failure alarms, with DC power supply through switching or a 12 VDC, 2.3 Ah battery. The control panel is already implemented for the (optional) installation of a T recorder. The same series is available with the NIA control system.
ACCESSORIES:
• Pivoting/Fixed wheel kit
• Door open alarm
• Visual/Sound power failure alarm, 12-VDC power supply with backup battery (estimated duration, years)
• Disk recorder with weekly cycle and 1.5 VDC battery power supply
• Electronic strip chart recorder, with RTD Pt 100 Ω input; other video graphical recorders available upon specific request
• Additional RTD Pt 100 Ω sensor to connect to an external system for the acquisition and recording of T values, such as T-GUARD®, SensiNet® or similar.
• Additional RTD Pt 100 sensor complete with 4-20 mA converter mounted on a DIN bar to connect to an external recording system
• Internal-external through-hole with rubber stopper
• Closure of the command panel in plastic material
• Remote alarm device
• Cryogenic gloves
• Voltage regulator
• Application of the NIA control system
On this equipment series it is possible to carry out activities such as I. Q. (Installation Qualification) and O. Q. (Operational Qualification); please contact KW’s Commercial Office for an assessment of the costs entailed by such activities. KW is also available for ISO calibration certification services for the comparison of primary SIT samples.
