CHAPTER 4. ORGANIZATIONAL MAINTENANCE INSTRUCTIONS

TM 5-4120-355-14

CHAPTER 4. ORGANIZATIONAL MAINTENANCE INSTRUCTIONS

Section 1. Service Upon Receipt of Equipment

4-1. Unloading the Equipment.

a. Remove any blocking or tiedowns that may have been used to secure the item to the carrier. The air conditioner

is shipped in a wooden carton, the base of which is raised to provide for insertion of tongs of a forklift.

b. Use a forklift or other suitable lifting device to remove unit from carrier. If necessary, the unit may be unloaded

manually.

CAUTION: Use are in handling to l void damaging the air conditioner.

4-2. Unpacking the Equipment.

a. General. Move air conditioner to installation site before removing shipping container. Cut the metal bands and

remove top, end, and sides of carton, and the Kimpak covering. Remove bolts securing base of unit to carton, and using

the handles, lift unit from carton.

b. Depreservation. Prior to placing unit in operation, accomplish depreservation in accordance with instruction out-

lined in DA Form 2258 (Depreservation Guide of Engineer Equipment). DA Form 2258 is attached or near the opera-

tional controls.

4-3. Inspecting and Servicing Equipment.

a. Perform quarterly preventive maintenance services (fig. 4-3).

b. lnspect entire air conditioner for signs of damage, paying particular attention to evaporator and condenser coils.

c. The air conditioner contains a full operating charge of refrigerant and compressor oil. No further service is

required.

4-4. Installation of separately Packed Components.

a. General. The air conditioner is basically- a self-contained unit. However. in certain installations it may become

desirable to utilize the sound attenuator and/or blockoff plate with an electrical receptacle, and use a remote control

box.

b. Blockoff Plate. The blockoff plate is provided for installation when the controls are removed for remote control

operation. The blockoff plate provided must be used so that no air will enter the lower Compartment.

Refer to figure 4-2 and install the blockoff plate.

4-5. Installation Instructions

a. General. Set air conditioner in a level position to allow proper condensate draining (operation will be satisfactory

with unit sitting at a slight angle (5 degree max) and using one of the alternate drain connections.

b. Locating the Unit. The front access panel and discharge and intake grilles are removable for normal service and

maintenance, and must always be unobstructed to allow sufficient air for condensing purposes. The discharge and intake

openings at the front of the unit should be free from obstruction to permit maximum unit capacity.

NOTE: Remove discharge and intake grilles and filter, if unit is to be used with ducts carrying air to and from the condi-

tioned space. Install grilles and filter in the duct. Remove the chemical and biological (CB) inlet cover (fig. 4-4) if a CB

filter is to attached to the unit.

4-1