6. Diaphragm Replacement Procedure

Cord wiring may differ from the illustration for some models.

  1. Replace the cover bolts using an 8 mm (5/16’’) wrench.

  2. Remove the auto-stop piece as instructed under 5. Auto-Stop Function.

  3. Remove the wires from the 3 hooks.

    NOTE: Do not remove the screws.

  4. Remove the 4 screws from the casing using a Phillips screwdriver.

  5. Remove the nut and take the diaphragm off the motor body.

  6. Install a new diaphragm using the new provided nut.

    *Tightening torque: Approx. 1 Nm (approx. 0.75 ft-lb)

  7. Insert the air outlet into the rubber grommet and reattach the casing assembly with the 4 screws.

  8. Replace the wires in the 3 hooks.

  9. Install the auto-stop piece as instructed in the first steps.

  10. Tighten the cover bolts using an 8 mm (5/16’’) wrench.

WARNING

Unplug the power cord and be sure to let the air pump cool down before opening the cover.

  • Replace both sides of the diaphragm/casing assembly at the same time. If one diaphragm breaks, it generally indicates that the remaining diaphragm is weak and vulnerable to breaking in the near future.

  • Replace the diaphragm assembly kit every year.

  • Operate the blower to ensure operation is correct after replacing the diaphragms.

  • Do not lubricate any internal parts of the air pump.