To stop the air conditioner, refer to figure 1 and place the selctor
switch in the OFF position
17. Operation Under Usual Conditions.
a. Start the airr conditioner (paragraph 15).
b. Operational Check; final Performance Check. All maintenance levels.
(1) The assembled air conditioner shall meet the requirements of
15 and 16.
(2) The assembled air conditioner shall produce a 18°F (± 2°) temperature
difference between the evaporator air input and output, under the following
(a) The compressor shall be operating for 30 minutes.
(b) The ambient air temperature on the condenser side shall be between 60°
(c) The ambient air temperature on the evaporator side shall be between
70° and 90°F.
e. Fan and Blower Check; Final Performance Check. All maintenance levels.
(1) The fan and blower assembly shall be tested as a complete unit installed in
the air conditioner under test.
(2) The air conditioner shall be operating in fan mode only.
(3) The fan and blower assebly shall meet the requirements of TM 11-6105-200-50
paragraph 1-9 (except paragraphs 1-9a(1) and 1-9b(1)).
The speed current and temperature ratings shall be taken from the motor
nameplate, or the NSN description if the nameplate is missing.
18. Operation in Dusty or Sandy Areas
17.1. Operation in Extreme Heat.
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 120 °F (49 °C). Extra care
should be taken to minimize the cooling load when operating in extreme high temperatures.
(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
Weatherstripping, the installation of storm doom, and windows, if appropriate,
and insulation of surfaces exposed to the outside is recommended when operating
in extremely high temperatures for extended periods.
(1) Clean outside grilles, coils, filters, and mist eliminator more frequently.