Changing the Diaton (Continued)
With the pump running, set output adjustment knob at 50 (i.e. 50%) and remove old Diaton by
turning it counter clockwise.
With pump running be sure output adjustment knob is locked at 50% setting.
Install the spacer (E) with the drain hole facing down and with the 1388 seal (F) between the spacer
and the boss of the pump housing. (G). Make certain that the slots of the 1388 seal (F) are aligned
with holes in the spacer (E) and the tapped holes in the boss of the pump housing (G).
Turn on the pump and screw in the new Diaton (C) until the back side of the Diaton just touches the
recess (A) of the spacer (E).,
Unscrew the Diaton counterclockwise 1/4 to 1/2 full turn until the four holes in the Diaton (C) are
aligned with the four holes in the spacer OEP.
This place the Diaton in an optimum position for long life and best accuracy.
Re-install pump head and cartridge valve assembly, tightening the four head mounting screws in a
Retighten these four head mounting screws after two days to take care of Diaton Set.