Chapter 2: INSTALLATION AND OPERATION INSTRUCTIONS

TM 5-4120-273-15

CHAPTER 2

INSTALLATION AND OPERATION INSTRUCTIONS

Section I. SERVICE UPON RECEIPT OF EQUIPMENT

tions it may become desirable to utilize the block-

2-1. Unloading the Equipment

off plate with an electrical receptacle, and use a

a. Remove any blocking or tie downs that may

remote control box.

have been used to secure the item to carrier. The

air conditioner is shipped in a wood carton, the

b. Sound Attenuator. The sound attenuator

base of which is raised to provide for insertion of

will provide a sound dampening effect and is

tongs of a forklift.

mounted on the front of the air conditioner (fig.

12). The sound attenuator replaces the air intake

b. Use a forklift or other suitable lifting device

and discharge grilles and air is taken in and dis-

to remove unit from carrier. If necessary, the unit

charged through the attenuator baffles. Air is

may be unloaded manually.

taken in through the bottom and discharged

Caution: Use care in handling to avoid

through the top of the attenuator. Refer to figure

damaging the air conditioner.

1-2, and install the sound attenuator as follows:

2-2. Unpacking the Equipment

(1) Remove the intake and discharge grilles

(para 3-18).

a. General. Move air conditioner to installation

site before removing shipping container. Cut the

(2) Place the sound attenuator in position on

metal bands and remove top, end, and sides of car-

the front of the unit by alining the grille mount-

ton, and the Kimpak covering. Remove bolts se-

ing holes with the attenuator mounting holes.

curing base of unit to carton, and lift unit from

Note. Make sure that the notched edge of the

carton.

attenuator frame matches the damper door control chain

b. Depreservation. Prior to placing unit in op-

location.

eration, accomplish depreservation in accordance

(3) Install the mounting bolts.

with instructions outlined in DA Form 2558 (De-

preservation Guide of Engineer Equipment). DA

(4) Store the grilles so as to avoid possible

Form 2258 is attached to or near the operational

damage.

controls.

Caution: The use of the sound attenuator

2-3. Inspecting and Servicing Equipment

may result in reduced capacity.

a. Perform daily preventive maintenance serv-

ice (para 3-6).

2-5. Installation or Setting-Up Instructions

b. Perform quarterly preventive maintenance

a. General. Set air conditioner in a level posi-

service (para 3-7).

tion to allow proper condensate draining (opera-

c. Inspect entire air conditioner for signs of

tion will be satisfactory with unit sitting at a

damage, paying particular attention to evaporator

slight angle (5 degrees maximum) and using one

and condenser coils.

of the alternate drain connections).

d. The air conditioner contains a full operating

charge of refrigerant and compressor oil. No

b. Locating the Unit. The front access panel

further service is required.

and discharge and intake grilles are removable for

normal service and maintenance, and must always

2-4. Installation of Separately Packed

be unobstructed to allow sufficient air for con-

Components

densing purposes. The discharge and intake open-

ings at front of unit should be free from obstruc-

a. General. The air conditioner is basically a

tion to permit maximum unit capacity.

self-contained unit, however, in certain installa-

2-1