TM 10-8145-222-23
0003
DIESEL ENGINE CONTINUED
ELECTRICAL DESIGN, CABLES, LIGHTING, ALARM, TEMPERATURE CONTROL, AND RECORDING
The MTRCS electrical design includes system and circuitry components for the refrigeration unit and any additional
equipment.
Power Supply Cable
Power cables/connectors are a minimum of 50 feet in length. They are capable of operating each power source. One
end of each power cable is permanently attached to the power box (Table 1).
Lighting
System lights are furnished for each compartment of the insulated container. The light switch is located on the control
box assembly. The MTRCS is provided with internal blackout capabilities. This allows food service personnel to
continue loading/unloading during blackout conditions. This switch is located on the control box assembly. Blackout
mode is the default setting.
Alarm System
The alarm system is both audio and visual. The alarm is activated when the inside container temperature changes
from either of the set temperature ranges. The temperature range is set at the control box. The operator can choose
to use or disable the alarm system at the control box.
Temperature Control
A microprocessor based electronic refrigeration control module is the major operational component of the refrigeration
unit. The controller guides all temperature and defrost functions in both compartments of the insulated container. Each
compartment of the insulated container has a controller sensing element that monitors all functions throughout the
pallets and their configurations. The operator can adjust the compartment temperatures using the microprocessor
controller in the control box.
Temperature Recorder
A commercially available shock-mounted, waterproof, seven-day temperature recorder is used on the MTRCS. The
temperature recorder is located on the left exterior of the unit. Chart recorder paper is provided inside the document
holder.
END OF WORK PACKAGE
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