Quincy Compressor Q12120P User Manual (English)

Questions and Answers:

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Brenda SnyderAug 20, 2025
How to fix insufficient pressure at tool or accessory with Quincy Compressor Air Compressor?
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  Cameron Gross DDSAug 20, 2025
  If you're experiencing insufficient pressure at the tool or accessory with your Quincy Compressor Air Compressor, consider the following: * Check for leaks or restrictions in the hose or piping and repair them. * Ensure the air intake isn't restricted by cleaning or replacing the filter. * Tighten the belt if it's slipping. * Replace the hose or connectors if they are too small. * Consider if the compressor is incorrectly sized; you might need a smaller tool or a larger compressor. * Ensure the regulator is turned up to high enough pressure; if faulty, replace the regulator.
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Casey MartinAug 25, 2025
Why does the tank lose pressure rapidly when Quincy Compressor Air Compressor shuts off?
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  Christian WongAug 26, 2025
  If the tank on your Quincy Compressor Air Compressor loses pressure rapidly after the compressor shuts off, it could be due to: * A loose connection or leak in the pipe, tank drain valve, tubing, fitting, or hose. Turn the unit off, unplug it, and then tighten or replace the fittings or components. * A faulty check valve, so replace the faulty check valve.
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Michael DuranAug 27, 2025
Why is my Quincy Compressor Q12120P Air Compressor so noisy?
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  James VincentAug 28, 2025
  Noisy operation in your Quincy Compressor Air Compressor can stem from several sources: * Lack of lubricant in the crankcase, so check for possible damage to bearings and add lubricant. * Loose pulley, flywheel, belt, compressor or motor fasteners, belt-guard, clamps, or accessories, so tighten where necessary. * Carbon deposits on the piston or valves, so remove the cylinder head and inspect for foreign matter on top of the piston and clean. * Worn main bearings, broken piston, worn wrist pins, wrist pin bearings, or loose connecting rod bolt.
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Amy SanchezAug 30, 2025
Why does motor hum or run slowly when first turned on in Quincy Compressor Air Compressor?
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  Caleb CaldwellAug 30, 2025
  If the motor hums or runs slowly when first turned on for your Quincy Compressor Air Compressor, it could be due to: * Using a light-duty extension cord, so use an additional hose instead of an extra extension cord or use a heavier gauge extension cord. * A loose electrical connection, so repair the electrical connections. * Low voltage, so check with a voltmeter. * The motor being sized incorrectly, so replace with a correctly sized motor. * A defective motor, so replace the motor. * The motor voltage not matching the voltage of the power source, so change the power cord & voltage of motor to match the voltage of the power source.
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jill64Sep 1, 2025
What causes excessive vibrations in Quincy Compressor Q12120P?
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  Sarah SchmidtSep 2, 2025
  Excessive vibrations in your Quincy Compressor Air Compressor may be caused by: * Misaligned or loose pulley & flywheel, so realign or tighten them. * A loose belt, so tighten the belt. * The compressor unit being bolted to an uneven surface or not bolted down at all (stationary models), so shim to level the surface & fasten to the floor if possible.
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hernandezmarioSep 4, 2025
What to do if Quincy Compressor Q12120P overheats?
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  Tyler JeffersonSep 4, 2025
  Quincy Compressor Air Compressor overheating can occur due to: * High ambient temperature or inadequate ventilation, so increase ventilation with cooler air. * Dirty cylinder & head cooling fins, so clean all outer surfaces of the compressor. * The unit being undersized for the application, so re-evaluate application requirements and re-size if necessary. * Insufficient lubrication, so inspect for proper lubricant and amount. * A restriction in the head or check valve, so inspect, clean or replace.
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jvelasquezSep 6, 2025
What causes excessive lubricant consumption in Quincy Compressor Q12120P Air Compressor?
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  Kimberly AdamsSep 6, 2025
  Excessive lubricant consumption or excessive lubricant in the hose of your Quincy Compressor Air Compressor can result from: * The crankcase being overfilled with lubricant, so drain the lubricant and refill to the proper level with the proper lubricant. * Lubricant leaks, so tighten bolts on the compressor to the proper torque or replace gaskets. * Wrong lubricant viscosity, so drain the lubricant & refill with the proper lubricant. * The compressor being on an unlevel surface, so level the compressor. * A plugged crankcase breather, so clean or replace the crankcase breather.
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Donna CohenSep 9, 2025
Why does the pressure relief valve continually "pops" on Quincy Compressor Q12120P Air Compressor?
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  Bryan HarrisSep 9, 2025
  If the pressure relief valve on your Quincy Compressor Air Compressor continually pops, it could be due to: * A defective pressure switch, so replace the pressure switch. * A faulty pressure switch setting. * A defective pressure relief valve, so replace the pressure relief valve.