Unable to fill or pressurize the pot with water.

  • Disengage the Emergency Stop.
  • Make sure the air compressor is capable of supplying the minimum air flow requirement for your system (see technical specifications in the manual).
  • Make sure the air inlet pressure gauge reads 100-175 psi (6.8-12 Bar, 0.68-1.2 MPa).
  • If the gauge does not read 100-175 psi, check the air compressor for proper setup.
  • Make sure the air inlet filters are clean, and replace if necessary.
  • Systems with water tanks:
    • Make sure the water tank is full and the inlet ball valve is open.
    • Clean or replace water inlet filter if necessary.
    • Make sure all fittings connections are tight.
  • Systems with pressurized supply connection:
    • Ensure water supply connection is connected and pressurized.
    • Check that water supply meets appropriate pressure and flow requirements (see setting up the equipment in the manual).
    • Ensure all fitting connections are tight.
    • Check inlet water pressure regulator for proper flow direction installation.
    • Check inlet water pressure regulator screen filter for debris, clean if possible.
    • Replace regulator if no flow can be passed through regulator.
  • Disengage the blast control switch.  Adjust the pump inlet air pressure regulator until the pump air pressure regulator gauge reads 100 psi (6.9 Bar, 0.69 MPa).
  • If you are unable to attain this setting, check the air inlet filters and make sure the supply air pressure is greater than or equal to 100 psi.  
  • If the above steps do not resolve the issue, replace the pump air pressure regulator.
  • Rotate 3-way selector valve to OFF position.
  • Open rinse valve and ensure pump cycles, and water flows from rinse hose.
  • Close rinse valve and verify that pump stalls.
  • If pump continues to creep or will not prime, refer to manual 333397 for pump service.
  • Make sure the pop-up is clean and free of debris in the o-ring sealing area.
  • Check for proper pop-up alignment in the closed position (there should be no gaps between the o-ring and the pop-up).
  • Remove the o-ring and make sure the o-ring gland is clear of debris.
  • Replace the o-ring and/or pop-up if worn.
  • Adjust the water pressure regulator until the pot pressure gauge reads 185 psi (12.75 Bar, 1.275 MPa).
  • If this adjustment is not possible, service the water pressure regulator (see manual 309474).