Dosatron International Dosatron D14MZ520

Ensure no tools are used during the procedure

Is the pressure in the DOSATRON at zero?

Allow the pressure to drop to zero

Unscrew the blocking ring (Fig. 13)

Adjust the nut to align the eyelet peaks with the desired ratio on the scale (Fig. 14)

Tighten the blocking ring (Fig. 15)

Ensure the pressure drops to zero

Unscrew the bell by hand (Fig. 18) and remove it

Unscrew the fixing nut of the dosing part (Fig. 19) and remove it

Retain the motor piston while turning the plunger piston ¼ turn (Fig. 20)

Change parts and reassemble in the reverse order

Allow the pressure to drop to zero

Pull downwards to remove the suction tube (Fig. 27)

Unscrew and take off the suction valve retaining nut (Fig. 28)

Ensure the pressure has dropped to zero

Take off the suction tube of product (Fig. 24)

Unscrew the retaining ring (Fig. 25)

Pull downwards to remove the injection assembly (Fig. 26)

Change the following components

Operate the DOSATRON to inject clean water and rinse the injection system

Pinch the component and the seal between finger and thumb, then push to deform the seal

Increase deformation to grip the exposed part of the seal and pull it out of its groove

Clean the seal seating without using any tools