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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RECOMMENDATIONS

1 - When using soluble products to
be made up into solutions, we recom-
mend the periodic dismantling of the
entire dosing part (see :
§ CLEANING
REFITTING THE SUC-
TION VALVE
Fig. 6
§ CHANGING SEALS IN
THE INJECTION ASSEMBLY).
Thoroughly rinsing all the ele-
ments of the dosing part with
water and
them after having previously
lubricated 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 bracket, unscrew the
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, remo-
ve the motor piston and soak it into
AND
dried onto the piston motor.
O-ring
re-assembling
Fig. 7
N
Water
inlet
© DOSATRON INTERNATIONAL / 41
lukewarm water < 40°C
[104°F] overnight. This
helps to dissolve any
deposits which may have
Water
outlet
Fig. 8