DV Systems IS Series - User Manual

Questions and Answers

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Valerie ReidAug 18, 2025
How to troubleshoot a DV Systems IS Air Compressor that won't start?
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  Laura MillerAug 18, 2025
  If your DV Systems Air Compressor won't start, first ensure power is reaching the unit by checking the disconnect or breaker and any fuses. Verify all wiring connections are secure and correctly wired according to the schematic. Also, reset the starter overload if it has tripped. The unit may not start if the pressure in the tank is too high, so reduce the pressure below the pressure switch 'cut-in' point.
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Ricky WillisAug 20, 2025
Why is there oil downstream and excessive carbon build-up in my DV Systems IS Air Compressor?
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  Linda GarciaAug 20, 2025
  If you notice oil passing downstream and excessive carbon buildup in your DV Systems Air Compressor, it could be due to several reasons. High ambient temperature or poor air circulation around the unit can cause this. Also, check if the unit is running for a high percentage of time or if the air filter is obstructed. Other possible causes include too much oil in the pump, using the wrong type of compressor oil, or worn valves and piston rings. Introduce cool air, improve air flow, ensure correct flywheel rotation, check for air leaks, clean or replace the air filter, reduce the oil amount, change to recommended oil, and check/repair valves or replace piston rings as necessary.
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Robert MartinezAug 23, 2025
What to do if my DV Systems IS has no or insufficient air flow?
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  simpsonstevenAug 23, 2025
  If your DV Systems Air Compressor has no or insufficient air flow, the air filter may be dirty, so replace it. Check for loose belts and tighten them, but avoid over-tightening. Clean, repair, or replace any leaking, sticking, or plugged pump valves, aftercooler, or tank check valve. Also, fix any air leaks in the compressor or piping system, using a soap/water mixture to find small leaks. Finally, consider that the unit might be too small for your compressed air requirements.
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fuentesrussellAug 26, 2025
Why is my DV Systems Air Compressor overheating?
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  garciaamyAug 26, 2025
  If your DV Systems Air Compressor is overheating, it might be undersized for your air requirements. Ensure that the maximum operating time doesn't exceed 60% based on an 8-hour day, which is approximately 35 minutes per hour. Clean any dirt accumulation on the pump and ensure the compressor is at least 18 inches away from any obstruction. Verify the correct rotation of the flywheel. Fix any air leaks and clean or replace any small remote air intake piping if used. Replace the air filter and ensure the oil level and type are correct. Clean or replace worn or carboned valves in the cylinder head, aftercooler tube, or check valve as needed.
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Derek AndersonAug 27, 2025
Why is there water in the air lines and/or milky oil in my DV Systems IS?
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  maria47Aug 28, 2025
  If you notice water in the air lines or milky oil in your DV Systems Air Compressor, it's likely because the tank isn't being drained regularly or the unit isn't used enough to burn off water in the pump. Drain the tank daily; consider purchasing a tank auto-drain if needed. If using the unit infrequently, run it for 30 minutes to burn off water. Regularly check the oil and change it more often than the maintenance schedule suggests, as an oil/water mixture can cause premature pump issues.
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Michael TaylorSep 3, 2025
Why do the belts keep rolling off my DV Systems IS's motor pulley and/or flywheel?
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  Michelle ClarkSep 3, 2025
  If the belts are rolling off the motor pulley or flywheel on your DV Systems Air Compressor, it could be due to misalignment between the flywheel and motor pulley. Use a straight edge to align them. If using multiple belts, ensure they are a matched set. Also, inspect belts for nicks or tears and ensure the belts match the flywheel/pulley groove (A or B section). Purchase a new set of matched belts if needed, paying attention to the A or B section requirement.
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John ReynoldsSep 6, 2025
Why does the flywheel or motor pulley wobble or come loose on my DV Systems IS Air Compressor?
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  David HollandSep 6, 2025
  If the flywheel or motor pulley wobbles or comes loose on your DV Systems Air Compressor, it could be that the clamping bolt on the flywheel is not tight or the set screw on the motor pulley came loose. Tighten the clamping bolt as required. Replace the set screw on the motor pulley with a new one, as set screws have a Loctite coating and can only be used once.
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bradshawtimothySep 8, 2025
What causes the unloader to leak constantly when my DV Systems IS Air Compressor is not operating?
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  Martin WaltersSep 8, 2025
  If the unloader leaks constantly when your DV Systems Air Compressor is not operating, the disc inside the tank check valve may not be seating properly, allowing compressed air in the tank to escape. Clean or replace the check valve as required.
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Johnny MorrisSep 12, 2025
What to do if the unloader at the pressure switch of my DV Systems Air Compressor does not function or leaks?
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  Ricky MorganSep 12, 2025
  If the unloader at the pressure switch of your DV Systems Air Compressor does not function or leaks when the unit is operating, the unloader may be dirty or faulty. Clean, repair, or replace it as needed.
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Paige AlvarezSep 13, 2025
Why does the intercooler safety valve pop continuously on my DV Systems IS Air Compressor?
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  Caleb PhillipsSep 13, 2025
  If the intercooler safety valve on your DV Systems Air Compressor pops continuously, it could be due to dirty or defective valves causing back pressure, or the intercooler being clogged with carbon. Clean, repair, or replace the valves and clean or replace the intercooler as needed.