Operation in Extreme Heat. - TM-5-4120-222-140030

2-13. Operation in Extreme Heat.

NOTE

Unit Preventive Maintenance Checks and Services (PMCS) should be performed

at daily intervals.

a. General. The air conditioner is designed to operate in temperatures up to 120F (49C). Extra care

should be taken to minimize the cooling load when operating in extreme high temperatures.

b. Protection.

(1) Check all openings in the enclosure, especially doors and windows, to be sure they are tightly

closed. Limit in and out traffic if possible.

(2) When appropriate, use shades or awnings to shut out direct rays of the sun.

(3) When possible, limit the use of electric lights and other heat producing equipment.

(4) Limit the amount of hot, outside air introduced through the fresh air damper to that essential for

ventilation.

NOTE

Weatherstripping, the installation of storm doors, and windows, if appropriate,

and insulation of surfaces exposed to the outside is recommended when operating

in extremely high temperatures for extended periods.

c. Cleaning.

(1) Clean outside grilles, coils, filters, and mist eliminator more frequently.

18.1