Installation Hints; Using For The First Time; Incorporated Hydraulic By-Pass - dosatron D 20 S Manuel D'utilisation

INSTALLATION HINTS

The Dosatron can be connected to the
main water line directly (Fig. 6) ; on a
by-pass (Fig. 7), recommended.
If your flow rate is above the oper-
ating limits of the Dosatron, see §
EXCESSIVE FLOW.
To prolong the working life of the
Dosatron it is advisable to install
a filter (ex.: 50 mesh - 300 microns
depending on your water quality)
upstream.
This is imperative if the water contains
impurities or particles, especially if the
water comes from a well.
Valve
Filter
Fig. 6
Excessive flow (as an indication)
If your Dosatron clicks more than 32 times, that is 16 cycles in 15 seconds,
you are close to the superior flow limit. If you need more flow, you must install
a Dosatron with a superior capacity of flow.
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DOSATRON INTERNATIONAL / 42
A filter is recommended and required
for the warranty to be valid.
Installing the Dosatron on a bypass
enables clean water to be supplied
without operating the Dosatron and
the Dosatron to be easily dismantled.
When connecting an
installation to the public water
supply, you must respect the
rules and regulations in force
in the country.
Check
Valve
valve
Filter
Fig. 7
Putting the DOSATRON
into order

USING FOR THE FIRST TIME

The Dosatron unit comes on OFF position.
- Bring the bypass button (model D20S) into median position.
- 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
injection stem (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 hose depends on the water
flow-rate, the ratio setting and the length of the suction hose. To bleed the
air from the suction hose and accelerate the priming, set the injection rate
at maximum. Once the Dosatron is primed, adjust to the required injection
rate (see § ADJUSTING THE INJECTION RATE).

INCORPORATED HYDRAULIC BY-PASS

A mechanism to select either the dosing function or the by-pass mode,
only for D20S model:
- Completely unscrew the bypass button on the top of the unit (Fig.8-A), the
Dosatron is working and sucking product.
- The dosing unit is operating (significant noise can be heard).
Bypass operation:
- Completely screw the bypass button (Fig. 8-C), the Dosatron stops (no
more noise) and does not suck product any more. The water continues to
flow through the unit.
ATTENTION : The median position is the draining position (Fig. 8-B). It is normal
that the bypass screw is leaking when the bypass is in the median position.
A
ON
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C
B Fig. 8
OFF