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Thermo King V-520 NM 20 User Manual

Thermo King V-520 NM 20
112 pages
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Revision B
June 2022
TTKK 5566443300--1188--IIPP--EENN
Installation Standards and Procedures Guide
V220 and V320 Series Units
User Guide

Table of Contents

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Thermo King V-520 NM 20 Specifications

General IconGeneral
BrandThermo King
ModelV-520 NM 20
CategoryAutomobile Accessories
LanguageEnglish

Summary

Section 2 - Safety Precautions

Overview

Covers general safety precautions, specific cautions, and first aid information.

First Aid

Provides immediate care instructions for various exposures: refrigerant, oil, electrical shock, etc.

Electrical Hazards

Details risks of hazardous voltage and high current in electrical components.

Refrigerant Hazards

Covers hazards from refrigerant pressure, gases, and handling, emphasizing PPE.

Section 4 - Unit Installation Standards and Procedures

Section 5 - Compressor Selection and Installation Standards

Compressor Selection

Stresses selecting the correct compressor for each unit to prevent premature failure and warranty voidance.

Understand Compressor Speeds

Explains the importance of compressor speed for preventing failure and ensuring performance.

Adding Oil

Details the process of adding the correct type and amount of oil to the compressor.

Setting Air Gap

Explains how to properly set the air gap for the compressor clutch to prevent premature failure.

Section 6 - Refrigerant Hose and Fittings Standards

Tightening Refrigeration Hose Fittings

Provides torque specifications and best practices for tightening hose fittings to prevent leaks.

Suction Line Routing and P-Trap Formation

Guides on routing suction lines and forming P-traps for proper compressor lubrication.

Section 7 - Electrical Standards

Unit Main Power Connections to 12 Vdc Positive Battery Connection

Details connecting the unit's power wire to the vehicle's positive battery connection with a large in-line fuse.

Section 8 - Evaporator Drain Hose Standards

Section 9 - Configuring Software and Controller Procedures

Flash Loading Configuration Files

Details the procedure for loading configuration files using WinTrac software.

Section 10 - System Evacuation Procedures

Section 11 - System Leak Check Procedures

Section 12 - System Charging Procedures

Section 13 - Unit Performance Adjustments

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