TM 9-4120-388-14
2-7. GENERAL OPERATING PROCEDURES - Continued.
EXCEPTION:
Under extreme cold climatic conditions, such as blowing snow, or freezing rain which might
enter and damage condenser section, the unit may be operated in the VENTILATE, LO
HEAT, or HI HEAT modes with the fabric cover rolled down and snapped in place.
DO NOT OPERATE IN THE COOL MODE WITH THE FABRIC COVER ROLLED DOWN
(3) Be sure that all air inlet and outlet openings are clear.
(4) Be sure drains are either open or piped to a satisfactory location with a proper drain system.
(5) Table 2-2 lists the recommended control settings for the desired mode of operation. Minor adjustments may
be made to get the desired mixture of recirculated and fresh air and the air flow patterns of conditioned air.
b. General Information.
(1) During warm or cool weather. (Operate air conditioner in COOL or HEAT modes as appropriate.)
(a) Limit traffic through doors as much as possible.
(b) Keep doors and windows tightly closed.
(c) Limit use of fresh (outside) air.