Originally developed for demanding military applications, our Dual-Safe Chest Freezer is a high-capacity -80°C with a dual cooling system. These freezers feature a large capacity of over 32 cu. ft., a high cooling capacity (more than twice our standard chest freezers) and redundancy (two independent refrigeration systems) for critical samples.
- Two independent cascade refrigeration systems configured to deliver reserve refrigeration capacity under extreme conditions
- Four 1.5hp air-cooled (water-cooled optional) compressors for high capacity and maximum reliability
- Three modes of operation, including normal and accelerated pulldown, plus long-term storage
- Redundant controls in case of controller failure
Control System
- Keyed master power switch for operating security
- Independent refrigeration controls selectable for systems “A” and “B”
- Adjustable, integrated temperature control
- Toggle between display setpoint, actual operating temperature and alarm limits
- Independent adjustable cold and warm alarm setpoints with key-activated switch, audible warning and alarm silence button
- Power failure alarm with 24-hour battery back-up
- Indicator lights for all control and operational functions
- Standard 6 in. (15.2cm) circular chart recorder for permanent record of cabinet performance
- Battery meter allows for easy check of backup charge
Refrigeration System
- Two cascade systems operating separately or together depending on system loading
- Thermal expansion valve increases refrigeration BTU removal capacity, increases temperature pulldown rate, improves temperature recovery following lid openings and warm product insertion, and automatically reacts to changing ambient temperatures
- Gravity feed evaporator design assures temperature uniformity within chamber interior, enhances refrigerant flow and oil return, and increases overall efficiency
- CFC-free refrigerants
Cabinet Design
- Uses standard ultra-low temperature inventory racks with boxes
- Coved-corner interior design improves refrigeration efficiency and accelerates heat removal from stored product
- Laboratory-grade construction includes minimum 5 in. (12.7cm) CFC-free foamed-in-place urethane insulation surrounding interior chamber, plus 3 in. (8.9cm) insulation in lid
- Fully insulated lid has two cam-action latches which compress against multiseal gasket to protect against frost build-up
- High-density sublids provide additional protection to stored product during lid openings
- Heavy-gauge, reinforced, cold-rolled steel interior chamber has 50% greater thermal efficiency than stainless steel
- Exterior and interior surfaces are finished with high-impact powder coat paint
- Includes 1 in. diameter thru-wall access port with plug
Compatible with:
Warranty and Service Offering: US and Canada: Two years, parts and labor
Certifications: UL and CE
Recommended for: Long-term storage of biological and chemical samples.
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