Champion HRA25-12 - 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

S
Scott GarciaAug 18, 2025
How to troubleshoot a Champion HRA25-12 motor that will not start?
- J
  Jack SloanAug 18, 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.
F
Frances ArnoldAug 20, 2025
Why does the starter trip repeatedly on my Champion HRA25-12 Air Compressor?
- M
  Meagan HowardAug 20, 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.
J
Jenna MurphyAug 22, 2025
Why is my Champion HRA25-12 Air Compressor running hot?
- J
  Jordan CarterAug 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.
J
Juan ArroyoAug 26, 2025
What causes excessive oil consumption in a Champion HRA25-12 Air Compressor?
- J
  John AndersonAug 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.
J
Joseph TateAug 27, 2025
Why does tank pressure build up slowly in my Champion Air Compressor?
- D
  davidchapmanAug 27, 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.
M
monicaburnettAug 30, 2025
What to do if the discharge pressure relief valve pops off while my Champion HRA25-12 Air Compressor is running?
- A
  allenteresaAug 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.
H
Heather PetersonSep 1, 2025
What to do if my Champion HRA25-12 will not unload?
- A
  Ana DavidsonSep 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.
M
mayerdanielSep 3, 2025
What causes excessive belt wear on a Champion HRA25-12 Air Compressor?
- A
  agomezSep 3, 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.
D
danielwilsonSep 5, 2025
What to do if my Champion HRA25-12 system does not alternate?
- E
  Emily EscobarSep 5, 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
Alan SteeleSep 8, 2025
Why does the tank pressure build up so quickly in my Champion HRA25-12?
- E
  ekellerSep 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 Safety Guidelines

Essential safety precautions for operating and maintaining the air compressor.

Installation Guidelines

Installation, Electrical, and Piping Safety

Requirements for unit placement, electrical supply, and safe air line piping.

Electrical Power Supply

Wiring Requirements and Diagrams

Recommended wire sizes, starter requirements, and simplex wiring diagrams.

Electrical and Piping Connections

Compressor Operation

Operating Modes and Start-Up

Explanation of unit operation modes and the initial start-up procedure.

Maintenance Schedule

Daily and Weekly Maintenance

Routine checks and cleaning procedures for daily and weekly intervals.

Periodic Maintenance

90-Day;500-Hour Tasks and Notes

Advanced Maintenance

Pilot Valve Adjustments

Pressure and Differential Adjustments

Specifications and Torque

Troubleshooting Guide

Motor, Pressure, and Valve Issues

Common troubleshooting steps for motor, pressure, and valve related problems.

Advanced Troubleshooting

Unloader and Alternator Problems

Summary

Safety and Operation Precautions

General Safety Guidelines

Essential safety precautions for operating and maintaining the air compressor.

Installation Guidelines

Installation, Electrical, and Piping Safety

Requirements for unit placement, electrical supply, and safe air line piping.

Electrical Power Supply

Wiring Requirements and Diagrams

Recommended wire sizes, starter requirements, and simplex wiring diagrams.

Electrical and Piping Connections

Compressor Operation

Operating Modes and Start-Up

Explanation of unit operation modes and the initial start-up procedure.

Maintenance Schedule

Daily and Weekly Maintenance

Routine checks and cleaning procedures for daily and weekly intervals.

Periodic Maintenance

90-Day;500-Hour Tasks and Notes

Advanced Maintenance

Pilot Valve Adjustments

Pressure and Differential Adjustments

Specifications and Torque

Troubleshooting Guide

Motor, Pressure, and Valve Issues

Common troubleshooting steps for motor, pressure, and valve related problems.

Advanced Troubleshooting

Unloader and Alternator Problems

Champion HRA25-12 Specifications

General

Brand	Champion
Model	HRA25-12
Category	Air Compressor
Language	English

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