Mainstream’s Quadcon Refrigerated Container System (QRCS) is approved by the United Sates Marine Corps (USMC). QRCS is a six-foot ten-inch by eight-foot by four-foot nine-inch (6’10” X 8’ X 4’9”) insulated container with Mainstream’s Modular Refrigeration Unit (MRU) that is powered by an external power source and capable of storing and transporting temperature sensitive cargo. Our MRU maintains the insulated container at freezer or refrigerator temperature ranges in ambient temperatures ranging from -25 to +125°F. Mainstream’s QRCS is certified by NSF International to satisfy sanitary requirements of NSF ANSI 7 Standard for Commercial Refrigerators and Freezers. It is ISO 1496-2 tested and CSC approved. The QRCS operates with 208 VAC, 50/60 Hz, three-phase power input or 120 VAC, 60 Hz, single-phase power.

Tested to U.S. Military Standard 810

Official Modular Refrigeration Unit approved USMC

  • Electrically Powered RU with Full-Width Double Door
  • Verified to Meet MIL PRF 32335 Requirements
  • ISO Tested and CSC Approved
  • NSF/ANSI Standard 7 Certified
  • High Efficiency with Energy Saver Option
  • MTBF 5,022 hrs.
  • 20 Year Storage

QRCS/MRU Value-Added Features

Designed for Military Environment
The MRU was designed for the harsh military environment. The unit has been tested to MIL STD 810G (e.g., salt-fog, humidity, sand-dust, solar, ice & freezing rain, blowing rain and watertightness, EMI [RE102 and CE102], high and low temperature operation & storage, ground mobility, rail impact and transit drop).

Improved Air Flow and Air Circulation
Air is drawn into the evaporator so condensation is not sprayed onto the food inside the container. The conditioned air circulates from the evaporator compartment to provide more uniform air flow distribution and prevent air blockage.

Total Unit Modularity
Every component can be replaced with common tools. Tube brazing or wire splicing is never required.

System Redundancy
Component redundancy allows the MRU to operate even if a condenser fan, evaporator fan, fan capacitor or heater fails. Extra terminals are available on the relays if a contact pits and fails.

Energy Saver Option
In freezer mode, an energy saver selection switch automatically operates the MRU longer during cooler periods of the day, such as the evening, to reduce power consumption.

Circuit Breakers
The MRU uses re-settable circuit breakers. There are no fusible links or fuses.