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RIDGID OF45175A - User Manual

RIDGID OF45175A
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OF45175A
OPERATOR’S MANUAL
TWIN STACK
PORTABLE AIR
COMPRESSOR
To reduce the risk of injury, the user
must read and understand the
Operator’s Manual before using this
product.
!
WARNING:
IN624800AV 1/08

Table of Contents

Questions and Answers

  • A
    Andrew StaffordAug 19, 2025
    What to do if my RIDGID Air Compressor will not run?
    • R
      Richard DayAug 19, 2025
      If your RIDGID Air Compressor won't run, there are several potential causes. First, make sure the unit isn't plugged into an extension cord; if it is, remove it. Second, check that the unit has electrical power by verifying it's plugged in and checking the fuse/breaker or motor overload. A blown fuse should be replaced. An open breaker should be reset, after determining the reason for the problem. If the thermal overload is open, the motor will restart when cool. Finally, a bad pressure switch will need to be replaced.
  • K
    Keith OrtizAug 21, 2025
    Why won't my RIDGID OF45175A run?
    • D
      Daniel RodriguezAug 21, 2025
      If your RIDGID Air Compressor won't run, here are a few things to check: * Make sure the unit isn't plugged into an extension cord, as this can prevent it from starting. * Verify that the unit is receiving electrical power by checking the plug, fuse, or breaker. If a fuse is blown, replace it. If a breaker is open, reset it after determining why it tripped. The motor will restart when cool if the thermal overload is open. If the pressure switch is bad, replace it.
  • J
    jeffreydouglasAug 25, 2025
    Why does my RIDGID Air Compressor's circuit breaker trip repeatedly?
    • K
      Kyle WalkerAug 25, 2025
      If your RIDGID Air Compressor experiences repeated fuse blowing or circuit breaker tripping, several factors could be responsible. Ensure you are using the correct size and type of fuse, opting for a time-delay fuse if necessary, and avoid overloading the circuit by disconnecting other appliances or operating the compressor on its own dedicated branch circuit. Remove any extension cords being used. A defective check valve or unloader can also cause this issue, requiring replacement or repair.
  • D
    Dawn MorrisAug 26, 2025
    Why does the thermal overload protector cut out repeatedly on my RIDGID OF45175A?
    • Z
      Zachary LewisAug 26, 2025
      If the thermal overload protector in your RIDGID Air Compressor cuts out repeatedly, several issues could be the cause. Check for low voltage using a voltmeter. Clean a clogged air filter. Ensure proper ventilation and that the room temperature isn't too high by moving the compressor to a well-ventilated area. Remove any extension cords being used.
  • A
    Andrew FitzgeraldAug 28, 2025
    Why does my RIDGID Air Compressor motor hum but not run?
    • J
      James BerryAug 28, 2025
      If your RIDGID Air Compressor motor hums but cannot run or runs slowly, there are a few potential causes. Low voltage could be the issue, so check with a voltmeter. Remove any extension cords. A shorted or open motor winding may require you to replace the motor. Also, a defective check valve or unloader might need replacement or repair.
  • M
    Mitchell HenryAug 30, 2025
    What to do if air tank pressure drops when RIDGID OF45175A shuts off?
    • J
      James WeberAug 30, 2025
      If the air tank pressure drops when your RIDGID Air Compressor shuts off, it could be due to a few reasons. Check all connections (fittings, tubing, etc.) with a soap and water solution and tighten any loose connections. Make sure the drain cock is tightened. If the check valve is leaking, disassemble the check valve assembly and clean or replace it. Remember to bleed the tank before disassembling the check valve.
  • M
    Mary MoralesSep 1, 2025
    Why does the thermal overload protector keep cutting out on my RIDGID Air Compressor?
    • L
      lewisbrianSep 1, 2025
      If the thermal overload protector on your RIDGID Air Compressor cuts out repeatedly, here are some possible causes: 1. Low voltage: Check the voltage with a voltmeter. 2. Clogged air filter: Clean the filter. 3. Inadequate ventilation or high room temperature: Move the compressor to a well-ventilated area. 4. Using an extension cord: Remove the extension cord.
  • L
    Lori PerkinsSep 3, 2025
    What causes low air output from my RIDGID OF45175A?
    • P
      perryaaronSep 3, 2025
      If the air output of your RIDGID Air Compressor is lower than normal, consider the following: * Loose mounting bolts: Tighten them. * Broken inlet valves: Have an authorized service representative repair the unit. * Dirty intake filter: Clean or replace the intake filter. * Leaking connections: Tighten the connections.
  • P
    Patrick DyerSep 5, 2025
    How to reduce excessive moisture in discharge air from RIDGID Air Compressor?
    • J
      Jessica HodgeSep 5, 2025
      If there's excessive moisture in the discharge air of your RIDGID Air Compressor, the causes might be: * Too much water in the air tank. Drain the tank. * High humidity. Move the compressor to an area with less humidity or use an air line filter.
  • K
    kylewuSep 7, 2025
    Why is there excessive moisture in the discharge air from my RIDGID OF45175A Air Compressor?
    • T
      Todd YoungSep 7, 2025
      If you notice excessive moisture in the discharge air of your RIDGID Air Compressor, it could be due to excessive water in the air tank, so drain the tank. High humidity can also contribute, so move the compressor to an area with less humidity or use an air line filter.

Summary

Safety Instructions

Safety Signal Words

Explains the meaning of danger, warning, caution, and notice symbols used in the manual.

Before Using the Air Compressor

Details essential safety precautions to follow before operating the air compressor.

Spraying Precautions

Breathable Air Warning

Important warning that the compressor does not supply breathable air without proper filtering.

California Proposition 65 Warning

Motor Specifications and Electrical Requirements

Power Supply and Motor Specifications

Details the voltage, amperage, frequency, phase, and RPM of the compressor motor.

General Electrical Connections

Provides guidelines for safe electrical connections, grounding, and circuit protection.

Thermal Overload Protector

Unpacking and Checking Contents

Installation

Operating Your Air Compressor

Maintenance

Tank Maintenance and Components

Filter Removal, Inspection, and Replacement

Lubrication

Storage Guidelines

Troubleshooting

RIDGID Air Compressor Limited Three Year Warranty

RIDGID OF45175A Specifications

General IconGeneral
Power SourceElectric
Tank Capacity4.5 Gallons
Maximum Pressure175 PSI
SCFM @ 90 PSI5.1
Pump TypeOil-Free
Voltage120V
TypePortable
Max Pressure175 PSI
CFM at 90 PSI5.1
HP1.6
Amps15 Amps
Noise Level78 dBA

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