Operation Under Usual Conditions. - TM-5-4120-282-130033

16. Stopping

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 18F ( 2) temperature

difference between the evaporator air input and output, under the following

conditions:

(a) The compressor shall be operating for 30 minutes.

(b) The ambient air temperature on the condenser side shall be between 60

and 120F.

(c) The ambient air temperature on the evaporator side shall be between

70 and 90F.

Page 30, paragraph 47. Subparagraph e is added as follow:

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)).

NOTE

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.

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 120 F (49 C). 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 doom, 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.