Champion HRA20D-25 - User Manual

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OPERATION/MAINTENANCE

MANUAL & PARTS LIST

TWO STAGE/FOUR CYLINDER R70A

AIR COMPRESSOR & UNITS

WARNING

THIS MANUAL CONTAINS IMPORTANT SAFETY INFORMATION AND SHOULD ALWAYS BE

AVAILABLE TO THOSE PERSONNEL OPERATING THIS UNIT.

READ, UNDERSTAND AND RETAIN ALL INSTRUCTIONS BEFORE OPERATING THIS

EQUIPMENT TO PREVENT INJURY OR EQUIPMENT DAMAGE.

MODEL R70A COMPRESSOR MODEL HRA25-12 UNIT

Form No. F3234 VER: 09 07/01/2009

C469-

A

(Ref. Drawing)

C324-

A

(

Ref. Drawin

g)

Questions and Answers

M
Megan WalkerAug 19, 2025
How to troubleshoot a Champion HRA20D-25 Air Compressor motor that will not start?
- B
  burtonryanAug 19, 2025
  If the Champion Air Compressor motor won't start, check the following: * Ensure all fuses and switches are operational and inspect for loose or faulty wiring. * Check the overload relay in the starter and reset it. * Reset the starter. If it trips repeatedly, have an electrician inspect the electrical system. * Repair or replace the pressure switch, remembering to relieve tank pressure first. * Use a voltmeter to check for low voltage, ensuring it corresponds to the unit's specifications.
A
Andrew HowellAug 21, 2025
Why does the starter trip repeatedly on my Champion HRA20D-25 Air Compressor?
- C
  Carmen KennedyAug 21, 2025
  If the Champion Air Compressor starter trips repeatedly, consider these potential causes: 1. The pressure switch might be improperly adjusted. Adjust or replace it, remembering to relieve tank pressure first. 2. A faulty check valve could be the issue. Clean or replace it after relieving tank pressure. 3. The fuses or magnetic starter heaters might be incorrectly sized. Ensure they are properly rated. 4. Low voltage can cause this issue. Check with a voltmeter to ensure the voltage matches the unit's specifications. 5. The motor itself may be defective and require replacement.
M
Ms. Ashley BishopAug 23, 2025
Why is my Champion HRA20D-25 running hot?
- O
  ocunninghamAug 23, 2025
  If your Champion Air Compressor runs hot, check the following: * Ensure the flywheel rotation is correct (counter-clockwise when viewed from the drive side). * The compressor valves may be defective; install a new valve plate assembly. * The air filter may be dirty; clean or replace it. * The cylinder fins or intercooler may be dirty; clean them.
C
Christopher HudsonAug 26, 2025
What causes excessive oil consumption in a Champion HRA20D-25?
- S
  stevenyuAug 26, 2025
  If your Champion Air Compressor is consuming excessive oil, consider the following: * A dirty air filter: Clean or replace it. * Incorrect oil viscosity: Refill with oil of the proper viscosity. * Oil leaks: Tighten bolts and replace gaskets. * Worn piston rings: Replace the rings. * Scored cylinder: Replace the cylinder.
P
Paul HowardAug 28, 2025
Why does tank pressure build up slowly in my Champion HRA20D-25 Air Compressor?
- T
  Travis VillanuevaAug 28, 2025
  If the tank pressure builds up slowly in your Champion Air Compressor, try these solutions: * Tighten any loose fittings to address potential air leaks. * Clean or replace the air filter if it's dirty. * Install a new valve plate assembly if the compressor valves are defective.
R
Randall McfarlandAug 30, 2025
What to do if the discharge pressure relief valve pops off while my Champion HRA20D-25 Air Compressor is running?
- K
  Karen SmithAug 30, 2025
  If the Champion Air Compressor's discharge pressure relief valve pops off while the compressor is running, the issue might be: * An incorrect pressure switch setting: Adjust it to the correct setting. * A defective ASME relief valve: Replace the valve, remembering to relieve tank pressure first.
J
jsheltonSep 1, 2025
What to do if my Champion HRA20D-25 Air Compressor will not unload?
- B
  Bobby PetersSep 1, 2025
  If the Champion Air Compressor will not unload (for units with head unloaders), check the following: * The pilot valve setting may be incorrect: Adjust it to the correct setting. * The pilot valve may be defective: Replace the pilot valve. * There may be a lack of air to the pilot valve: Open the needle valve to the pilot valve.
J
Julie WalshSep 4, 2025
What causes excessive belt wear on a Champion Air Compressor?
- R
  Ronald MurraySep 4, 2025
  If the Champion Air Compressor experiences excessive belt wear, consider the following: * The pulley might be out of alignment: Realign the motor pulley. * The belts might be too tight or too loose: Adjust the belt tension.
C
Cindy ReynoldsSep 6, 2025
What to do if my Champion HRA20D-25 system does not alternate?
- A
  April ReedSep 6, 2025
  If the Champion Air Compressor system does not alternate (duplex units only), check these items: * Reset the starter. If it trips repeatedly, have an electrician inspect the electrical system. * Check and tighten all wiring connections in the alternator if they are loose. * Replace the alternator if it is defective. * Replace the motor if it is defective.
A
Andrew GarciaSep 8, 2025
Why does the tank pressure build up so quickly in my Champion HRA20D-25 Air Compressor?
- C
  Christopher YoungSep 8, 2025
  If the Champion Air Compressor's tank pressure builds up quickly, the cause might be excessive water in the tank. Drain the tank.

Summary

Safety and Operation Precautions

General Operating Safety

Crucial safety rules for operating and maintaining the air compressor unit to prevent injury.

Safety Symbols and Decal Explanations

Understanding Hazard Indicators

Installation Guidelines

Installation Safety and Environmental Notes

Critical safety warnings and environmental considerations for proper unit installation.

Electrical Power Supply Requirements

Three Phase Magnetic Starter Wiring Diagram

Illustrates the electrical wiring for a simplex three-phase magnetic starter.

Electrical and Piping Installation

Air Line Piping Requirements

Compressor Operation Guide

Initial Compressor Start-Up

Step-by-step instructions for the first startup and initial operation of the compressor.

Preventive Maintenance Schedule

Daily and Weekly Maintenance Checks

Lists essential daily and weekly tasks for maintaining compressor performance and longevity.

90-Day and 500-Hour Maintenance

Periodic Maintenance and Valve Servicing

Details maintenance tasks every 90 days/500 hours, including valve care.

Advanced Maintenance Procedures

Pilot Valve Pressure Adjustments

Setting Pressure and Differential Settings

Compressor Oil and Torque Specifications

Compressor Troubleshooting Guide

Common Compressor Problems and Solutions

Lists typical issues encountered with the compressor and their recommended corrective actions.

Troubleshooting Chart - Continued

Advanced Troubleshooting Scenarios

Addresses less common issues and specific problems for duplex units in the troubleshooting chart.

R70 A Compressor Component Illustration

R70 A Compressor Parts Breakdown

R70 A Compressor Parts List Details

Constant Speed Head Unloader System

Head Unloader Repair Parts

Unit Hazard Decal Listing

Unit Hazard Decals Explained

Visual Guide to Safety Decals

Pump Hazard Decals Explained

Decals for Pump Safety and Operation

Summary

Safety and Operation Precautions

General Operating Safety

Crucial safety rules for operating and maintaining the air compressor unit to prevent injury.

Safety Symbols and Decal Explanations

Understanding Hazard Indicators

Installation Guidelines

Installation Safety and Environmental Notes

Critical safety warnings and environmental considerations for proper unit installation.

Electrical Power Supply Requirements

Three Phase Magnetic Starter Wiring Diagram

Illustrates the electrical wiring for a simplex three-phase magnetic starter.

Electrical and Piping Installation

Air Line Piping Requirements

Compressor Operation Guide

Initial Compressor Start-Up

Step-by-step instructions for the first startup and initial operation of the compressor.

Preventive Maintenance Schedule

Daily and Weekly Maintenance Checks

Lists essential daily and weekly tasks for maintaining compressor performance and longevity.

90-Day and 500-Hour Maintenance

Periodic Maintenance and Valve Servicing

Details maintenance tasks every 90 days/500 hours, including valve care.

Advanced Maintenance Procedures

Pilot Valve Pressure Adjustments

Setting Pressure and Differential Settings

Compressor Oil and Torque Specifications

Compressor Troubleshooting Guide

Common Compressor Problems and Solutions

Lists typical issues encountered with the compressor and their recommended corrective actions.

Troubleshooting Chart - Continued

Advanced Troubleshooting Scenarios

Addresses less common issues and specific problems for duplex units in the troubleshooting chart.

R70 A Compressor Component Illustration

R70 A Compressor Parts Breakdown

R70 A Compressor Parts List Details

Constant Speed Head Unloader System

Head Unloader Repair Parts

Unit Hazard Decal Listing

Unit Hazard Decals Explained

Visual Guide to Safety Decals

Pump Hazard Decals Explained

Decals for Pump Safety and Operation

Champion HRA20D-25 Specifications

General

Brand	Champion
Model	HRA20D-25
Category	Air Compressor
Language	English

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