MIL-PRF-12574 Refrigeration Units, Mechanical, Panel Type, 5000 Btu For Refrigerator, Field, Portable \(150 Cubic Foot\)This document covers two types of panel type, mechanical, refrigeration units having a capacity of 5000 British thermal units \(Btu\) per hour and used with a 150-cubic foot, portable field refrigerator \(see 6.1\).

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MIL-PRF-12574M

3.2.14 Safety . The refrigeration units shall minimize

flammability, operational, toxic and personnel hazards.

3.2.15 Airflow . The air exiting the evaporator shall be directed

to create proper circulation inside the refrigerator it is used

with.

3.3 Support or ownership requirement s.

Refrigeration units

shall meet the following requirements.

3.3.1 Weigh t. The net weight of the refrigeration units,

including oil and refrigerant, shall be not more than 775 pounds

for type I units, excluding the battery and fuel, and not more than

775 pounds for type II units.

3.3.2 Transportability . Refrigeration units shall be able to be

handled by a forklift truck.

3.3.3

Design reliability . Refrigeration units shall operate

properly for not less than 2500 hours.

3.3.4 Service and maintenance . All major components shall be

accessible for adjustment, maintenance, servicing, and replacement

without removing any other major component. All other components

and assemblies shall be designed for ease of installation and

replacement and shall be accessible for maintenance, repair,

service and replacement with minimum disturbance to adjacent

components. No special tools shall be needed for any maintenance,

repair, service, installation or replacement action. Condenser and

evaporator fins shall be protected from any damage that might occur

during servicing or maintenance actions. Operator personnel shall

be able to visually check the moisture content of the refrigeration

system on all refrigeration units and the compressor crankcase oil

level on type I units.

3.3.5 Marking . Identification, instruction, control and gage

plates shall be of corrosion-resistant material permanently

attached to the outside of the refrigeration unit. Numbering and

lettering shall be legible and permanently inscribed and shall be

no less than 1/16 inch in height. All plates shall blend with the

framed enclosure finish and shall have a nonreflective surface.

3.3.5.1 Identification plate .

The identification plate shall

contain the following information:

1. U.S.