Dual-Safe -80°C Chest Freezer, air cooled, 220V, 50/60Hz, hardwired

Key Features : Large capacity of over 32 cu. ft., a high cooling capacity and two independent refrigeration systems for critical samples Four 1.5hp air-cooled 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″ (15.2cm) circular chart recorder for permanent record of cabinet performance Battery meter for easy check of backup charge Refrigeration System: Two cascade systems operate 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. System includes CFC-free refrigerants. Cabinet Design: Freezers 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″ (12.7cm) CFC-free foamed-in-place urethane insulation surrounding interior chamber, plus 3″ (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. Design includes 1″ diameter thru-wall access port with plug. Recommended for: Long-term storage of biological and chemical samples.