No blast air flow when the blast control is engaged. The water pump DOES NOT cycle while the blast control is engaged.

  • Make sure the air inlet pressure gauge reads 100-125 psi (6.8-8.6 bar, 0.68-0.86 MPa).  If the gauge does not read 100-125 psi, check the air compressor for proper setup.
  • Disengage the Emergency Stop.
  • Inspect the hose cable for damaged or shorted wiring.
  • Check the battery and control panel connections.
  • Make sure the DC power source is 12V.
  • Check the 3A fuse inside the control panel, and replace it if necessary.
  • Check the current flow in the circuit.  If current exists, replace the relay.
  • At the Air-Relay, disconnect the push-to-connect tubing and check the trigger circuit (from the blast control handle).
  • With the blast control switch activated, confrim that there is air flowing from the disconnected tube.
    • The air flow should be at supply air pressure but the air volume is reduced due to the size of the fittings and tubing.  If you do not get supply air pressure, check the blast control switch for proper operation, and check the blast control hoses to make sure they are not kinked or internally blocked.
  • Check the in-line filter at the industrial interchange nipple connection on the side of the panel (where you attach the blast control hose).
  • If the previous steps do not fix the issue, replace the air relay.