Related Manuals for Thermo King V-300 MAX-20
Summarization of Contents
Safety Precautions
General Safety Practices
Guidelines for safe operation including eye protection, clear workspace, and handling refrigerants and oils.
Refrigerant Handling Precautions
Precautions for handling refrigerants, including first aid for frostbite and inhalation.
Electrical Hazards and Precautions
Details on high and low voltage risks, safety precautions, and first aid for electrical shock.
Specifications
General Unit Specifications
Covers compressor type, oil charge, defrost method and timer settings for general unit parameters.
R-134A Refrigeration System Specs
Details refrigerant charge and pressure switch settings for R-134a systems.
R-404A Refrigeration System Specs
Details refrigerant charge and pressure switch settings for R-404A systems.
Electrical System Specifications
Lists fuse types, condenser/evaporator fan motor specs, and solenoid coil data.
Maintenance Inspection Schedule
Electrical System Inspections
Schedule for checking defrost, thermostat, protection circuits, wiring, and fan motors.
Refrigeration System Inspections
Schedule for checking refrigerant level and replacing the dehydrator.
Structural System Inspections
Schedule for inspecting hoses, unit condition, drains, belts, and mounting bolts.
Unit Description
System Overview and Models
Introduces V-200/V-300 series, models, and main assemblies like condenser, evaporator, compressor.
Control System Components
Describes control circuits, in-cab box, oil separator, refrigerant, liquid injection, and electric standby.
Unit Features
Lists key features of the unit, including components like evaporators, control box, and compressor.
Protection Features
Details protection switches like High Pressure Cutout, Condenser Fan Pressure Switch, and Low Pressure Cutout.
Control Box Components
P.C. Board and Fuses
Details the Printed Circuit Board layout and the function of various fuses.
Relays and Switches
Explains common relays, standby relays, defrost relay, and other control switches.
Electrical Maintenance
In-Cab Control Box Troubleshooting
Troubleshooting guides for M-13, M-16, and M-17 In-Cab Control Boxes with symptoms and remedies.
Defrost System
Defrost Operation and Components
Describes defrost initiation, operation, and key components like the defrost relay and solenoid valve.
Defrost Timer Settings
Explains how to set the defrost timer intervals using selector switches and the red selector.
Defrost System Testing Procedures
Guides for testing the manual defrost switch, termination switch, relay, and defrost timer.
Condenser Fan Pressure Switch Testing
Procedure for testing the Condenser Fan Pressure Switch (CFPS) on R-134a units.
Refrigeration Maintenance
Refrigerant Charge Procedures
Steps for charging the refrigeration system, checking levels, and testing.
Compressor Oil Handling
Procedures for checking compressor oil level and handling oil contamination.
Pressure Switch Testing
Methods for testing the High Pressure Cutout Switch (HPCO) and Low Pressure Cutout Switch (LPCO).
Refrigeration Service Operations
Compressor Service
Instructions for compressor removal and installation.
Component Service Procedures
Covers service for condenser coil, drier, pressure switches, solenoids, and oil separator.
Liquid Injection System Service
Details service for liquid injection metering orifice and testing the solenoid valve.
Check Valve and Evaporator Coil Service
Procedures for testing, repairing, and replacing check valves and evaporator coils.
Expansion Valve and Low Pressure Cutout Service
Instructions for servicing expansion valve assembly and low pressure cutout switch.
TC Unit Specific Component Service
Service procedures for suction receiver tank, regulator valve, and in-line check valves for TC units.
Refrigerant Hose Replacement
Detailed steps for replacing refrigerant hoses using the Speedy Clip System.
Structural Maintenance
Unit Inspection and Cleaning
Covers unit inspection, cleaning evaporator and condenser coils, and checking mounting bolts.
Clutch Maintenance
Clutch Testing and Removal
Procedures for testing clutch engagement, checking air gap, and removing the clutch assembly.
Clutch Installation
Step-by-step guide for installing the clutch assembly, including torque specifications.
Shaft Seal Cover and Shaft Seal Service
Instructions for removing, inspecting, and installing shaft seal cover and shaft seal.
Special Tools for Clutch Service
Lists specialized tools required for clutch maintenance procedures.
System Compressor and Oil
Compressor Installation and Oil Handling
Details compressor installation angles, oil types, and adding extra oil to the system.
Belt Tensioning Procedures
Guidelines for adjusting belt tension for engine driven and electric standby compressors.
Mechanical Diagnosis
Over-the-Road Diagnosis Guide
Identifies common issues for engine driven operation like heat load, dirt, belt tension, refrigerant shortage.
Electric Standby Diagnosis Guide
Troubleshooting for electric standby operation issues like compressor not running or short cycling.
Electric Standby Service Checks
Checklist for diagnosing electric standby issues such as compressor, transformer, and rectifier.
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