Installation; Precautions - dosatron D 20 S Manuel D'utilisation

Precise, simple and reliable
Installed directly in the water supply line, the Dosatron operates by
using water pressure as the power source. The water activates the
Dosatron, which takes up the required percentage of concentrate.
Inside the Dosatron, the concentrate is mixed with the water.
The water pressure forces the solution downstream. The dose of
concentrate will be directly proportional to the volume of water
entering the Dosatron, regardless of variations in flow or pressure
which may occur in the main line.
Motor piston
Clear
water
Adjustment (%)
ratio
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Solution
water + %
additive
Dosing piston
Concentrated
additive to be
dosed

Installation

PRECAUTIONS

1 - GENERAL REMARKS
- When connecting a Dosatron either
to the public water supply or to its
own water source, you must respect
the regulations in force concerning
protection of the source i.e. backflow
prevention, etc.
- When connecting the Dosatron to the
water supply, ensure that the water flows
in the direction of the arrows on the unit.
- In a case where the water installation is
higher than the Dosatron itself, there is
a possible risk of water and concentrate
flowing back through the Dosatron. In
this case, installing a non-return valve
downstream is recommended.
- It is recommended that you should place
an anti-siphon valve on the downstream
side of the dosing pump in installations in
which there is a risk of siphoning.
- Do not install the Dosatron just above an
acid container, (risk of acid fumes attacking
the Dosatron) and protect it from possible
contact with corrosive products.
- Protect the Dosatron from freezing
temperatures by draining it and store it
away from sources of excessive heat.
- Do not install the Dosatron on the
suction side of the supply pump (risk of
siphoning).
- During any intervention the operator
must stay in front of the Dosatron and
wear protective eyewear and gloves.
- IMPORTANT ! Use no tool or metallic
utensils.
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- It is the responsibility of the owner/
operator to replace the injection seals
annually to ensure precise injection.
- The setting of the Dosatron's dosing rate
is the sole responsibility of the user. The
user has to respect the recommendations
given by the manufacturer of the
chemical product.
- It is the responsibility of the owner/
operator to check that the flow and
pressure of the installation do not exceed
the Dosatron characteristics.
- Adjustmentmust be made when there
is no pressure in the Dosatron. Turn off
the water supply and allow the pressure
to drop to zero.
- It is the responsibility of the owner/
operator of the Dosatron, to determine
the correct amount of solution and
injection ratio to obtain the desired
result.
- An air inlet, an impurity or a chemical
attack on seal can interrupt the
dosing function. It is recommended to
periodically check that the solution is
being correctly drawn up into the
Dosatron.
- Change the suction tube as soon as it
seems damaged by the chemical.
- Relieve the pressure after use (advised).
- Rinsing of the Dosatron is required :
. when changing chemicals,
. before handling the Dosatron, to
avoidany contact with the chemical.