Using For The First Time; Recommendations; How To Drain The Dosatron; Adjusting The Injection Rate - dosatron D 25 F Manuel D'utilisation

Putting the Dosatron
into order

USING FOR THE FIRST TIME

- Partially open the water inlet valve.
- Press the bleed button on the top of the DOSatRON (Fig. 6).
- When a constant flow of water is seen coming from around the
bleed button (no more "spitting" of air), release the button.
- Open the water inlet valve slowly, the DOSatRON is
self-priming.
- Operate the DOSatRON until the product to be
injected is drawn up into the doser body (the product
is visible through the plastic tube).
- the DOSatRON makes a characteristic "click-
clack" noise when working.
NOTE: the time required to prime the suction tube depends on water
flow-rate, ratio setting and length of the suction tube. to bleed air from the
suction tube and accelerate priming, set injection rate at maximum. Once
the DOSatRON is primed, adjust to the required injection rate (see §

aDJUStING tHE INJECtION RatE).

the DOSatRON may be fitted in its upper part with the function by-pass
(optional equipment) :
- By-pass in ON, the DOSatRON works and the concentrate is drawn up.
- By-pass in OFF, the DOSatRON is stopped and does not draw up the product.
ON
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DOSatRON INtERNatIONaL / 38

RECOMMENDATIONS

1 - When using soluble products
to be made up into solutions, we
recommend the periodic dismant-
ling of the entire dosing part
(see : § CLEaNING
aND REFIttING tHE
SUCtION VaLVE
§ CHaNGING SEaLS
Fig. 6
IN tHE
aSSEMBLY).
thoroughly rinsing all the ele-
ments of the dosing part with
water and re-assembling them
after having previously lubri-
cated the seal (Fig. 7) with a
silicone lubricant, in the case of
difficulty in re-fitting.

HOW TO DRAIN THE DOSATRON

(in case of freezing temperature)
- turn off the water supply.
- Remove the injection assembly,
see § CHaNGING tHE MOtOR
PIStON.
- Remove the screw-top and the
motor piston.
- Disconnect the water inlet and out-
let fittings.
- Remove the pump body from the
mounting
OFF
screw-top and empty any remaining
water.
- the DOSatRON can now be reas-
sembled, having first cleaned the
seal (Fig. 8-N).
Maintenance
2 - Before putting the DOSatRON
into operation after a non-use period,
remove the motor piston and soak
INJECtION
Fig. 7
N
Water
inlet
bracket, unscrew the
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DOSatRON INtERNatIONaL / 39 DOSatRON INtERNatIONaL / 39
it into lukewarm water <
40° C [104°F] overnight.
this helps to dissolve
any deposits which may
have dried onto the piston
motor.
O-ring
Water
outlet
Fig. 8