CHAPTER 3 REFRIGERATION SYSTEM

TM 5-4120-394-BD

CHAPTER 3

REFRIGERATION SYSTEM

BDAR FIXES SHALL BE USED ONLY IN COMBAT OR FOR

TRAINING AT THE DISCRETION OF THE COMMANDER

(AUTHORIZED TRAINING FIXES ARE LISTED IN APPENDIX E) IN

EITHER CASE DAMAGES SHALL BE REPAIRED BY STANDARD

PROCEDURES AS SOON AS PRACTICABLE.

Section I. INTRODUCTION

3-1. Scope. Refrigeration system components within the DOD standard family of Environmental Control Units are

essentially identical in function but differ in size and occasionally in different location of components within the various

units. Standard bracing can be extended to perform splicing or by-passing of damaged refrigeration lines. Heat

dissipation fins will require removal around the damaged areas within condenser or evaporator coils if by-passing is not

feasible. Expansion valves and compressors generally cannot be expediently repaired unless merely nicked or punctured

in such a way that internal components are undamaged. Patches may be improvised where this instance is observed in

order to seal the system. Cannibalization is urged where compressors or expansion valves cannot be repaired.

3-2. Assessment Procedure. Refrigeration system assessment procedures are structured using the logic process. (See

Table 3-1) Visually inspect the system for damage. If leak cannot be found, use standard maintenance procedures to

locate. (See TM9-4840-435-14.)

3-3. Repair Procedure Index.

Damage

Para

1. Condensor/Evaporator Coil Damaged ...................................................................................................

3-4

2. Refrigerant Line Damaged.....................................................................................................................

3-6

3. Hot Gas By-Pass System Components Damaged ................................................................................

3-8

3-1