International Conversions; Fitting The Suction Tube; Adjusting The Injection Rate; Changing Seals In The Injection Assembly - dosatron D 20 S Manual De Utilización

INTERNATIONAL CONVERSIONS

Principle : Setting at 1% ⇒ 1/100 = 1 part of concentrate for 100 parts
of water.
Ex. : Setting at 2% ⇒ 2/100 = 2 parts of concentrate for 100 parts of
water.
Ratio ⇒ 1/50.

FITTING THE SUCTION TUBE

If the Dosatron has already been used, please imperatively
refer to § PRECAUTIONS.
- Unscrew the nut (Fig. 12-C) at the bottom of
the injection assembly and put it onto the tube.
- Slide the tube onto the barb as far as it will go,
tighten the clamp.
ADJUSTING THE INJECTION RATE (with pressure off)
IMPORTANT ! Use no tools. Adjustment must be made when there is no
pressure in the Dosatron.
- Bring the bypass button into
the median position.
- Unscrew the blocking nut
(Fig. 13-B).
- Keep it fixed while screwing
or unscrewing the transparent
ring (Fig. 13-D).
- Adjust the guide mark (black
line) of the transparent ring on
the chosen dosage.
- Tighten the blocking nut
(Fig. 13-B).
REMINDER: The quantity of injected product is proportional to the quantity
of water entering the Dosatron. 1% ⇒ 1/100, which means 100 volumes of
water + 1 volume of injected products.
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Fig. 12
C
B B
D
Fig. 13
CHANGING SEALS IN THE INJECTION ASSEMBLY (with pressure off)
Frequency : Once per year.
IMPORTANT ! Use no tool or metallic utensils
ADVICE: Before dismantling any part of the injection assembly it is advi-
sable to operate the Dosatron, injecting clean water so as to rinse through
the injection system. In this way, risks of contact with concentrated solutions
in the injection assembly are minimized. During any such intervention, wear
protective eyewear and gloves !
METHOD OF REMOVING SEAL
Fig. 14 : Between finger and thumb, pinch the component and the seal ;
push towards one side to deform the seal.
Fig. 15 : Increase the deformation to grip the part of the seal thus exposed
and pull it out of its groove. Clean the seal seating without any tools.
Refitting is done by hand. It is very important that the seal is not twisted
once in place as this would impair its efficiency.
Fig. 14
Fig. 15
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