Chapter 1. INTRODUCTION - TM-5-4120-222-140014

CHAPTER 1

INTRODUCTION

Section I. GENERAL

1-2. Forms and Records

1-1. Scope

a. DA Forms and procedures used for equip-

a. This manual is published for the use of per-

ment maintenance will be only those prescribed by

sonnel to whom Military Models CE20VAL4 and

CE20VAL6 air conditioners are issued. Informa-

TM 38-750.

tion is provided on operation, preventive mainten-

b. The reporting of errors, omissions, and rec-

ance services, destruction, and organizational,

ommendations for improving this publication by

direct. and general support maintenance of equip-

ment, accessories, components, and attachments.

the individual user is encouraged. Reports should

Also included are descriptions of main units and

be submitted on DA Form 2028 (Recommended

their relationship to other components.

Changes to Publications) and forwarded direct to

the Commanding General, U.S. Army Mobility

b. Numbers in parentheses on illustrations indi-

Equipment Command, ATTN: AMSME-MPP,

cate quantity. Numbers preceding nomenclature

4300

Goodfellow

B o u l e v a r d , St.

Louis,

callouts on illustrations indicate the preferred

MO. 63120.

maintenance sequence.

Section Il. DESCRIPTION AND DATA

rator coil, evaporator fan, air conditioning filter,

1-3. Description

intake and discharge grilles, evaporator coil drain

a. General. The air conditioner (figs. 11 and

pan, expansion valves, electrical heaters, sight

1-2) is used primarily in van type enclosures for

glass, and a damper to regulate the amount of

providing filtered, conditioned, or heated air as re-

outdoor air entering the air conditioner.

quired to maintain service conditions necessary

for the efficient operation of electronic equipment

1-4. Identification and Tabulated Data

and for the comfort of operating personnel housed

a. Identification. The air conditioners have

within the vans. It is a completely self-contained,

air cooled, electric motor driven unit designed for

eleven major identification and instruction plates.

continuous operation with varying loads. It is

Information contained on these plates is listed

equipped with internal ducting to the low side of

below.

the evaporator fan so that ventilation air from the

(1) Air conditioner (Model CE20VAL4)

chemical and biological filter unit may be supplied

(a) Corps of Engineers plate A. Located

by the evaporator fan.

near top of back panel. Specifies nomenclature,

b. Condensing Section. The condensing section,

manufacturer, model number, serial number, di-

located at the bottom of the unit, contains the her-

mensions, weight and capacity

metically sealed compressors, condensing coil, con-

(b) Manufacturer's identification plate. Lo-

denser air intake opening, condenser air discharge

cated on rear panel just below sight glass. Speci-

opening, control panel, control box, thermostatic

fies model number and serial number of the unit.

switch, power receptacle connector, condenser fan,

(c) Compressor identification plates. Lo-

blower motor, dehydrator, suction and discharge

cated on front of compressor housing. Specifies

valves, and solenoid valves.

compressor model number, part number, serial

c. Evaporator Section. The evaporator section,

number, refrigerant, oil type and capacity, manu-

located in the top of the unit, contains an evapo-

facturer, and complete electrical data.

AGO 20053A