No blast air flow when the blast control switch is engaged. The water pump does cycle while the blast control switch is engaged.

  • Adjust the blast regulator to the desired pressure while the blast control is engaged.
  • Check for leaks along the tube and at the connection points (see tubing schematic in the manual for more detail).
  • Clean or replace the adjustable blast air regulator.
  • Disassemble the main air regulator and inspect components.
  • Replace or repair parts as necessary.