General Features
Operating Temperature
- -86°C, Range -20°C to -86°C
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Refrigeration System
The air cooled refrigeration system has been designed to maintain the set temperature in elevated ambient temperature environments.
- Dual cascade refrigeration system, with two, 1HP, air-cooled compressors.
- CFC-free refrigerants.
- Extra large condenser with two aerodynamic axial fans provides increased air circulation and heat expulsion.
- Down flow evaporator for efficient refrigerant flow, oil return, and longer compressor life.
- Washable condenser filter keeps fins dust-free, maintaining optimal cooling efficiency. No tools are required for removal.
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Control System
- Key Pad, multi-functional display, microprocessor controller.
- Password protected security system for power, temperature & alarm settings.
- Independent operating temperatures and high/low limit alarm. Factory setting for rapid setup and system start. Temperature adjustments in increments of 1°C.
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Electrical System
- Automatic voltage compensation to flattenvoltage fluctuations.
- Online incoming line voltage monitoring with digital read-out.
- Built-in surge suppressor minimizes effect of incoming voltage spikes.
- Solid state relay. No moving parts in the compressor drive circuit. No voltage spikes on start-up, protecting the microprocessor controller.
- Circuit breaker. Protects compressor and power supply circuits.
- Built in Automatic Delay Restart (ADR). Ensures on line quality after power failure, decreasing power load, protecting the compressor.
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Alarm System
- Intelligent Self-Diagnosis (I.S.D) system controller monitors system parameters and displays alarm status in real time.
- Audible & visual alarms alert you to the following:
Temperature Changes
Power failure
Low back up battery voltage
Door ajar
- Battery is automatically charged. The backup battery provides full system function during power failure.
- Remote alarm contacts for advanced protection
- Automatic temperature fluctuation recognition and logging.
- Key pad alarm test function to test the alarm system without opening the freezer door.
- 22 alarm codes
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Monitoring System
- Climate indicator displays environmental temperature risks affecting performance.
- Clean filter indicator advises when to wash condenser filter to maintain optimum cooling performance.
- Voltage compensation indicator. Automatically monitors and adjusts incoming voltage, compensating for voltage spikes, ensuring compressor operation is within specifications.
- Low battery indicator. Flashing light indicates when battery needs replacement.
- Surge suppressor indicator monitors, the circuit breaker.
- Compressor life protection monitors and automatically adjusts freezer conditions, extending compressor life.
- Computer interface through a standard RS-232 data port. Allows monitoring of all freezer functions (requires optional software).
- Real time clock.
- Alarm history; Records alarm time and highest temperature.
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Cabinet Construction
- Moulded, closed cell, CFC-free urethane insulation.
- Heavy-gauge steel cabinet with high-impact powder coated exterior finish.
- Polished, 14 - 18 Gauge Stainless Steel Interior.
- Rounded interior corners for easy cleaning.
- Access port (25.4mm) diameter, with cap.
- Dual wheel, heavy-duty swivel casters.
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Upright Cabinets
- Low profile design, only 200cm high
- Eye-level, door mounted controls.
- Four, insulated inner doors with independent door hinges and lock. An optional 5th inner door is optional.
- Three, adjustable SUS304 shelves, creating four interior compartments
- High-density, CFC-Free door insulation.
- Patented PULL 'N' PUSH™ door latch & handle, cam mechanism. Close door by pushing handle forward. Open the door by pulling handle backwards . For added safety and security a padlock or optional electronic lock can be fitted.
- Hot gas hallo prevents frost build-up for maximum seal and internal temparature stability.
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Chest Cabinets
- Low profile design for easier access to samples.
- Heavy-duty counter balanced lid with integrated keyed lid lock for security
- Double seal lid gaskets to minimize frost build-up
- Independent sub-lids provide additional internal temperature protection.
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Inventory System and Accessories
- Includes racks, boxes and dividers. These may be ordered separately, or as full-load sample inventory system.
- See Accessories section for information on optional alarm systems, temperature recorders, LN2/LCO2 back-up systems, inventory components and associated products.
- RS485 communication port, optional software
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