Operator, Organizational, Direct Support and General Support Maintenance Manual

Changes in force: C 1, C 2, C 3, C 4, and C 5

TM 5-4120-222-14

CHANGE

HEADQUARTERS

DEPARTMENT OF THE ARMY

No.

WASHINGTON, D. C., 20 NOVEMBER 1990

Operator, Organizational, Direct Support and General Support Maintenance Manual

AIR CONDITIONER, COMPACT VERTICAL, 208 V, 3 PHASE:

18,000 BTUH COOLING, 12,000 BTUH HEATING (TRANE MODELS)

50/60 HERTZ. MODEL CE20VAL6, NSN 4120-00-973-4589

400 HERTZ MODEL CE20VAL4, NSN 4120-00-858-5795

Approved for public release; distribution is unlimited

TM 5-4120-222-14, 21 November 1969 is changed as follows:

Page 18, paragraph 213 is superseded as follows:

2-13. Operation in Extreme Heat.

NOTE

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

at daily intervals.

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

should be taken to minimize the cooling load when opening 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.