Ingersoll-Rand ARO EVO EP20 Series User Manual (English)

Questions and Answers:

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Shannon HortonAug 21, 2025
What to do if my Ingersoll-Rand Water Pump has a process fluid leak?
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  Leonard CervantesAug 22, 2025
  If you notice a process fluid leak in your Ingersoll-Rand Water Pump, the following could be the cause: * Loose connections: Ensure you're using recommended torques for all fasteners and re-torque the fluid section bolts before operating. * Improper alignment of Manifolds, PRV, and fluid caps: Follow the recommended procedure from manual section xx for proper alignment.
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Ryan RobertsonAug 23, 2025
Why is my Ingersoll-Rand Water Pump making excessive noise or knocking?
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  Thomas TrujilloAug 25, 2025
  Excessive noise or erratic behavior in your Ingersoll-Rand Water Pump can stem from: * Excessive wear of the wrist pin and/or journal: Replace the wrist pin and journal. * Excessive wear of the piston rider band and/or wear ring: Replace the rider band and/or journal. * Missing, worn, or failed ball check: Ensure all ball checks are installed, intact, and in place. * System operating outside of NPSH requirements: Ensure the pump runs within NPSH requirements. * Foreign particle stuck in the inlet manifold or ball check: Ensure no solid particles exceeding the pump's solid passing capability pass through it.
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Courtney HughesAug 26, 2025
What to do if my Ingersoll-Rand Water Pump will not achieve pressure?
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  stevenwhiteAug 26, 2025
  If your Ingersoll-Rand Water Pump isn't reaching the desired pressure, consider these potential causes: * Missing, excessively worn, or failed ball check: Ensure all ball checks are installed correctly, are intact and in place. * Damage or failure of the PRV bellows: Replace the PRV bellows. * Torque limit set too low: Increase VFD parameter 4-16, but do not exceed 100%.
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jonesjenniferAug 28, 2025
Why is my Ingersoll-Rand Water Pump not achieving flow?
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  tbranchAug 28, 2025
  If your Ingersoll-Rand Water Pump is failing to achieve the expected flow rate, check the following: * Missing, excessively worn, or failed ball check: Make sure all ball checks are correctly installed, intact, and properly positioned. * Excessive back pressure: This can cause the pump to enter torque limit, reducing speed. Increase VFD parameter 4-16 (do not exceed 100%), or decrease system back pressure.
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william61Aug 30, 2025
How to fix oscillating speed on my Ingersoll-Rand Water Pump?
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  Brittany WolfAug 30, 2025
  If your Ingersoll-Rand Water Pump's speed is oscillating, it could be due to: * Varying back pressure: The system's back pressure may be fluctuating, causing the pump to repeatedly enter and exit torque limit. If constant speed is desired, increase VFD parameter 4-16, but do not exceed 100%. * Leak detection issues: The leak detectors might be tripping and initiating pump shutdown, but losing contact before the pump fully stops, leading to a return to commanded speed. Ensure air caps and tubing are sufficiently cleaned after a Diaphragm failure increase filter timer on leak detect sensitivity if nuisance trips cannot be avoided.
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prattemilySep 1, 2025
What causes premature diaphragm failure in an Ingersoll-Rand Water Pump?
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  Valerie JohnsonSep 1, 2025
  Premature diaphragm failure in your Ingersoll-Rand Water Pump can be caused by: * Fluid cap bolts or Diaphragm bolt loosened allowing air in between Diaphragms: Use recommended torques for all fasteners. Re-torque all fluid section bolts prior to operation.
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Anthony RobertsSep 3, 2025
Why does the oil color turn black in my Ingersoll-Rand Water Pump?
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  fitzgeraldkatherineSep 3, 2025
  Black oil in your Ingersoll-Rand Water Pump indicates: * A malfunctioning piston pump assembly: Replace the piston pump assembly. * A broken or damaged crankshaft cam: Replace the crankshaft cam. * The oil filter element needs replacement and is in bypass mode: Replace the oil and filter.
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Caleb WardSep 6, 2025
What causes excessive oil in section “1” of lower cap of my Ingersoll-Rand Water Pump?
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  Debra BurnsSep 6, 2025
  Excessive oil in section “1” of the lower cap of your Ingersoll-Rand Water Pump can be attributed to: * Worn or damaged reciprocating piston seals: Replace the piston seal. * A worn, scratched, or damaged piston sealing surface: Replace the piston and seal. * Excessive wear of the piston wear ring or rider band: Replace the wear ring and rider band.
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Brandi ScottSep 7, 2025
What leads to PRV bellows failure in an Ingersoll-Rand Water Pump?
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  Shane HoustonSep 7, 2025
  PRV bellows failure in your Ingersoll-Rand Water Pump may result from: * Excessive and repeated rapid dead-heading (rapid valve closure): Dead-head (down-stream valve closure) should be done in a smooth and controlled manner. * Using the pump PRV to maintain system pressure spikes or shocks: The pump PRV is not a substitute for system safety or relief devices. Install system protection.
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williamsmatthewSep 10, 2025
What causes rubber bellows failure in an Ingersoll-Rand Water Pump?
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  Mary BerrySep 10, 2025
  Rubber bellows failure in your Ingersoll-Rand Water Pump can occur due to: * Bellows not replaced with each Diaphragm change: Replace rubber bellows with each Diaphragm replacement. * Excessive oil leak at piston seal limits breathing of rubber bellows and can collect in bellows: Replace piston seals and piston damaged.