OPERATION UNDER RAINY OR HUMID CONDITIONS.

TM 5-4120-369-14

the condenser coil and/or in the compressor compartment may cause overheating of the refrigeration system. Dust or sand

may also clog the condensate trap and water drain lines.

Never operate the air conditioner without having the air filters in place.

b. Protection.

(1) Shield the air conditioner from dust as much as possible.

(2) Take advantage of any natural barriers which offer protection.

(3) Limit the amount of dusty or sandy outside air introduced through the fresh air damper.

(4) Roll down and secure the fabric cover on the back of the cabinet during periods of shutdown.

c. Cleaning.

(1) Keep the air conditioner as clean as possible.

(2) Pay particular attention to the outside grilles, condenser, filters, mist eliminator, louvers, and electrical

components.

(3) In extreme conditions, daily cleaning of condenser, filters, and outside grilles may be necessary.

OPERATION UNDER RAINY OR HUMID CONDITIONS.

Take special precautions to keep equipment dry. If installed outdoors, cover the equipment with a waterproof

cover when it is not in use. Remove cover during dry periods. Take all necessary precautions to keep the electrical

components free from moisture.

Make sure power is disconnected from air conditioner before touching any wiring or

other electrical parts.

OPERATION IN SALT WATER AREAS.

Disconnect power source prior to washing the air conditioner.

a. General. Wash the exterior and condenser section of the unit, particularly condenser air discharge louver

control mechanism, with clean fresh water at frequent intervals. Be careful not to damage electrical system with water.

Special attention must be given to prevent rust and corrosion.

b. Painting. Paint all exposed areas where paint has cracked, peeled, or blistered, or report condition to

organizational maintenance. Coat all exposed areas of polished metal with a light coat of grease.

*U.S.

GOVERNMENT

PRINTING

OFFICE:

1991

554-123/20263

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