Chapter 4. ORGANIZATIONAL MAINTENANCE INSTRUCTIONS

TM5-4120-347-14

CHAPTER 4

MAINTENANCE INSTRUCTIONS

Section/Paragraph

Repair Parts, Special Tools, TMDE, and Support

Condenser Air Discharge Louver

Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..I

and Linkage . . . . . . . . . . . . . . . . . . . . . . . . ...4-23

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-1

Fresh Air Damper and Actuator . . . . . . . . . . ...4-24

Service upon Receipt of Equipment . . . . . . . . . . . ..II

Condensate Drain . . . . . . . . . . . . . . . . . . . . . . ...4-25

Unloading . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-2

Electrical Wiring Repair General. . . . . . . . . ...4-26

Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-3

Control Module . . . . . . . . . . . . . . . . . . . . . . . . ...4-27

Receiving Inspection . . . . . . . . . . . . . . . . . . . . ...4-4

Temperature Selector (Thermostat) S3. . . . ...4-28

Installation Site Preparation . . . . . . . . . . . . . . ...4-5

Evaporator Fan Speed SwitchS2 . . . . . . . . . ...4-29

Air Conditioner Preparation for Installation. ... 4-6

Mode Selector Switch So....... . . . . . . . . . ...4-30

Installation Instructions . . . . . . . . . . . . . . . . . . ...4-7

Compressor Circuit Breaker CB1 . . . . . . . . . ...4-31

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..III

Control Module Wiring Harness . . . . . . . . . . ...4-32

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-8

Junction Box . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-33

Mechanical Lubrication . . . . . . . . . . . . . . . . . . ...4-9

Junction Box Wiring Harness . . . . . . . . . . . . ...4-34

Preventive Maintenance Checks and Services

Relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-35

(PMCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IV

Control Circuit Breaker CB2. . . . . . . . . . . . . ...4-36

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-10

Miscellaneous Cables, Harnessesand

Inspection and Service . . . . . . . . . . . . . . . . . . ...4-11

Terminal Boards . . . . . . . . . . . . . . . . . . . . . ...4-37

Troubleshooting . . . . . . . . . . . . ... . . . . . . . . . . . . ..V

Transformer, Rectifer, Resistor,

Use of Troubleshooting Table . . . . . . . . . . . . ...4-12

Capacitors and Harness. . . . . . . . . . . . . . . ...4-38

Maintenance Procedures. ... , . . . . . . . . . . . . . . . . ..VI

Condenser Fan Thermostatic Switch . . . . . ...4-39

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-13

Evaporator Fan, Housing and Motor . . . . . . . ..4-40

Installation Connectors . . . . . . . . . . . . . . . . . ...4-14

Heater Thermostat . . . . . . . . . . . . . . . . . . . . . . ...4-41

Information Plates, . . . . . . . . . . . . . . . . . . . . . ...4-15

Heater Elements . . . . . . . . . . . . . . . . . . . . . . . . ...4-42

Installation Hardware . . . . . . . . . . . . . . . . . . . ...4-16

Condenser Fan, Motor and Housing . . . . . . ...4-43

Fabric Cover. . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-17

Evaporator Coil Cleaning . . . . . . . . . . . . . . . ...4-44

Top Covers . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-18

Solenoid Valve Coil Removal . . . . . . . . . . . . ...4-45

Return Air Louverand Filter . . . . . . . . . . . . . ...4-19

Condenser Coil . . . . . . . . . . . . . . . . . . . . . . . . ...4-46

Supply Air Louver . . . . . . . . . . . . . . . . . . . . . . ...4-20

Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...4-47

Screens and Guards . . . . . . . . . . . . . . . . . . . . ...4-21

Preparation for Storage or Shipment . . . . . . . . . . ..VII

Mist Eliminator . . . . . . . . . . . . . . . . . . . . . . . . . ...4-22

Preparation for Storage . . . . . . . . . . . . . . . . . ...4-48

Section I.

REPAIR PARTS, SPECIAL TOOLS, TMDE, AND SUPPORT EQUIPMENT

4-1.

GENERAL

a. Repair parts are listed and illustrated in TM5-4120-347-24P, No special tools are required for

maintenance of the equipment. Test, maintenance and diagnostic equipment (TMDE), and support equipment

include standard electrical test equipment found in any organizational maintenance electric shop.

b. For authorized common tools and equipment refer to the Modified Table of Organization and Equipment

(MTOE) applicable to your unit.

c. Tool Kit, Service, Refrigeration Unit, NSN 5180-00-596-1474, contains hand tools and equipment used for

air conditioner maintenance. The following common items not contained in the refrigeration unit tool kit are

also required for air conditioner maintenance.

4-1