ToughTek F340e Troubleshooting Advice

Frequently Asked Questions

  • Tighten packing nut.
  • Replace piston packings and piston if necessary.
  • Service the intake valve ball check.
  • Tighten clamps on the rubber elbow.
  • Clean the fluid hose on the applicator.
  • Tighten the wet cup enough to stop leakage.
  • Replace the throat packings.
  • Tighten clamps on the hopper elbow.
  • Reduce length or increase diameter.
  • Turn the power switch ON.
  • Check circuit breaker at power source. 
  • Reset motor switch.
  • Clean the hose or application.
  • Clean rod. Always stop pump at bottom of stroke; keep wet cup filled with TSL. 
  • Be sure the inlet ball moves freely.
  • Refill the hopper and the prime pump.
  • Clear piston valve. 
  • Service the piston ball check.
  • Replace packings.
  • Clear or service intake valve.
  • Adjust air needle valve on applicator (see applicator manual).
  • Service spray applicator (see applicator manual).
  • Disassemble and Clean the pump.
  • Try to flush the hose using water hose and/or polyurethane tube.
  • Install the outlet check valve in the proper orientation.
  • Thin and mix material thoroughly to a lower viscosity.
  • Use a pump system priming fluid (slime). Wet out the system.
  • Use a larger diameter hose.
  • Check voltage supply to the sprayer:
    • Turn the motor power switch to OFF and unplug the sprayer. 
    • Locate a good voltage supply to prevent damage to electronics.
  • Open the relief valve to relieve pressure. 
  • Remove the obstruction and cycle power off and on. 
  • If the problem continues, contact your local distributor.
  • Install the outlet check valve in the proper orientation.
  • Allow the sprayer to cool. 
  • If the sprayer runs when cool, correct the cause of overheating. 
    • Keep the sprayer in a cooler location with good ventilation. 
    • Make sure the motor air intake is not blocked. 
  • If the sprayer still does not run, contact your local distributor
  • Check voltage supply to the sprayer:
    • Turn the motor power switch to OFF and unplug the sprayer.
    • Remove other equipment that uses the same circuit.
    • Locate a good voltage supply to avoid damage to electronics
  • Make sure the motor air intake is not blocked.
  • Make sure the fan has not failed.
  • Make sure the control board is properly connected to the back plate and that conductive thermal paste is used on power components.
  • Replace the control board.
  • Replace the motor.
  • Turn the motor power switch to OFF and unplug the sprayer.
  • Remove the motor shroud.
  • Disconnect the motor control and inspect for damage at the connectors.
  • Reconnect the motor control. 
  • Turn the motor power switch to ON. If the blinking code continues, replace the motor.
  • Turn power OFF.
  • Remove the motor shroud.
  • Disconnect the motor control and inspect for damage at the connectors.
  • Inspect the sensor for water. If the sensor is wet, let it dry for 24 hours.
  • Re-install the sensor, motor control connections, and shroud.
  • Turn power ON. If the problem continues, replace the motor.

  • Set the motor power switch to OFF and unplug the sprayer.
  • Locate a good voltage supply to avoid damage to electronics.
  • Graco