dosatron D25ALN Manual De Utilización página 31

Fig. 21
Change the O-ring of the dosing pump body:
- Release the retaining ring by pulling the ears
apart (Fig. 21).
- Extract the dosing locker by sliding it
towards the bottom of the dosing pump
body.
- Free the dosing pump body by pushing it
through the dosing body (Fig. 21)
- Change the dosing pump body O-ring
following the same procedure described
above.
Fig. 22 Fig. 23
- Refit the dosing pump body using the
aligning pins (Fig. 22)
- Refit the dosing locker along the dosing
pump body taking care to align the aligning
pins (Fig. 23)
Fig. 24 Fig. 25
- Refit the retaining ring so that it sits properly
in its groove. (Fig. 24)
- Finish by refitting the suction valve and its
nut. (Fig. 25)
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DOSATRON INTERNATIONAL S.A.S / 61
DISMANTLING/REFITTING THE DOSING PISTON
Before performing any maintenance on the DOSATRON, it is essential to
refer to the § PRECAUTIONS. Before dismantling the DOSATRON, and
to avoid any contact with the dosed products, operate the DOSATRON by
aspirating clear water to rinse the dosing pump.
- Close the water inlet and reduce the pressure to zero by opening the fast
priming valve situated downstream of the Dosatron.
- Dismantle the dosing part, following the instructions in the § DISMANTLING/
REFITTING THE DOSING PART. (Fig. 26)
- Turn the dosing piston through a quarter turn anti-clockwise to unlock it and
release it from the motor piston. (Fig. 27)
- Refit in the reverse order.
Fig. 26
©
DOSATRON INTERNATIONAL S.A.S / 62
Fig. 27
2
1
90°