TM 9-4120-402-14
CHAPTER 5
DIRECT SUPPORT MAINTENANCE INSTRUCTIONS
Paragraph
Equipment (TMDE), and Support Equipment
General...................................................................................................................................................... 5-1
Use of Troubleshooting Table ................................................................................................................... 5-2
General...................................................................................................................................................... 5-3
Fabric Cover.............................................................................................................................................. 5-4
Outside Covers and Panels....................................................................................................................... 5-5
Screens, Guards, and Grilles..................................................................................................................... 5-6
Information Plates ..................................................................................................................................... 5-7
.
Logic Box Assembly (LGC1)...................................................................................................................... 5-8
Evaporator and Condenser Fan Motor (B2) Repair................................................................................... 5-9
.
Service Manifold Installation..................................................................................................................... 5-10
.
Discharging the Refrigerant System .......................................................................................................... 5-11
.
Purging the Refrigerant System................................................................................................................. 5-12
Brazing/Debrazing Procedures................................................................................................................... 5-13
Flushing the Refrigerant System................................................................................................................ 5-14
Leak Testing the Refrigerant System ........................................................................................................ 5-15
Evacuating the Refrigerant System........................................................................................................... 5-16
Charging the Refrigerant System .............................................................................................................. 5-17
Refrigeration System Troubleshooting ...................................................................................................... 5-18
.
Overheating Checks ................................................................................................................................. 5-19
Refrigerant System Pressure Check ......................................................................................................... 5-20
Refrigerant Desiccant Dehydrator (Filter-Drier)......................................................................................... 5-21
Pressure Relief Valve................................................................................................................................5-22
Condenser Coil.......................................................................................................................................... 5-23
Receiver.................................................................................................................................................... 5-24
High Pressure Switch (S5) ......................................................................................................................... 5-25
Low Pressure Switch (S3) ......................................................................................................................... 5-26
Service Valves.......................................................................................................................................... 5-27
.
Solenoid Valve (L1)................................................................................................................................... 5-28
Liquid Sight Indicator (Sight Glass)............................................................................................................ 5-29
Expansion Valve ....................................................................................................................................... 5-30
.
Evaporator Coil ......................................................................................................................................... 5-31
.
Compressor (B1)........................................................................................................................................ 5-32
Tubing and Fittings .................................................................................................................................... 5-33
Fresh Air Damper ...................................................................................................................................... 5-34
Insulation ................................................................................................................................................... 5-35
Blast Damper............................................................................................................................................. 5-36
5-1
