How to Adjust PSI and GPM for Different Surfaces.

Correct pressure and flow prevent surface damage and improve cleaning efficiency. Follow these steps to adjust your system.

Step 1: Identify the Surface Type

  • Determine whether the surface is delicate (vinyl, wood) or durable (concrete, asphalt).
  • Choose appropriate cleaning settings.

Step 2: Check Your Pump Specifications

  • Know the maximum PSI and GPM ratings of your pump.
  • Ensure adjustments stay within safe operating limits.

Step 3: Adjust the Pressure

  • Use the unloader valve or control dial to set the desired PSI.
  • Start at a lower setting and gradually increase if needed.

Step 4: Adjust Flow Rate (GPM)

  • Set the GPM according to surface type and cleaning task.
  • Higher flow removes debris faster, but too much can cause streaking or damage.

Step 5: Test on a Small Area

  • Always test the adjusted settings on a small, inconspicuous area first.
  • Make any necessary fine-tuning before full application.

Conclusion:
Proper PSI and GPM settings protect surfaces and maximize cleaning efficiency. Regular testing ensures optimal results for every job.

✅ Pro Tip: Keep a reference chart for PSI and GPM settings for different surfaces to save time on future jobs.

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