Automatical Anti-Siphoning Device; Maintenance; Recommendations; How To Drain The Dosatron - dosatron D 20 S Manual De Utilización

AUTOMATICAL ANTI-SIPHONING DEVICE

Automatic anti-siphon valve :
- This automatically recreates normal atmospheric pressure in the Dosatron
in the event of an accidental vacuum in the line (Fig. 9)*.
Its use depends on the regulations in force in your country.
- You must comply with the local water authority's requirements.
*i.e.:
- if the water outlet is lower than the inlet.
- if the water cut-off is before the dispenser.
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DOSATRON INTERNATIONAL / 44
Fig. 9

Maintenance

RECOMMENDATIONS

1 - When using soluble products to be
made up into solutions, we recommend
the periodic dismantling of the entire
dosing part (see : § CHANGING SEALS
IN THE INJECTION ASSEMBLY).
Thoroughly rinsing all the elements
of the dosing part with water and
re-assembling them after having previously
lubricated the seal (Fig. 10) with a silicone
lubricant, in the case of difficulty in re-fitting.
2 - An air inlet, an impurity or a seal's failure can
interrupt the dosing function ; periodically check
out that the concentrate is correctly drawn up, thus
incorporated into the water.
3 - Before putting the Dosatron into operation after
a non-use period, remove the motor piston and soak
it into lukewarm water < 40° C [104° F] overnight. This
helps to dissolve any deposits which may have dried
onto the piston motor.
HOW TO DRAIN THE DOSATRON (in case of freezing temperature)
- Turn off the water supply and let
the pressure drop to zero.
- Screw the bypass button into the
median position.
- Remove the injection assembly.
- Disconnect the water inlet and
outlet fittings.
- Also unscrew the bleed screw (Fig.
11-P), remove it and let the water
flow out.
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DOSATRON INTERNATIONAL / 45
O-ring
Fig. 10
- Re-assemble in the reverse order to
the above by hand.
P Fig. 11