dosatron D 20 S Manuel D'utilisation page 21

ASSEMBLING THE DOSATRON (cont...)
For connecting to polyethylene or
polypropylene pipe :
- Bevel the end of the pipe and slide
on nut (Fig. 4-E) and then ferrule
(Fig. 4-C).
- Slide pipes into water inlet and
outlet (Fig. 4) as far as they will go.
- Push one ferrule (Fig. 4-C) against
the inlet and the other against the
outlet.
- Tighten the nuts (Fig. 4-E).
C
The connection of the Dosatron to the water network can be done with
flexible hoses (internal diameter 50 mm) to be fixed by means of clamps
and turning adapters Ø 50 x 60 mm [2"]. Make sure the water is flowing
according to the direction arrow on the pump body.
The Dosatron is delivered with a suction hose (cut it to the needed length)
enabling its use with a large capacity concentrate container.
The hose must be fitted with its strainer.
The instructions for fitting the hose are to be found in the specific chapter.
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For connecting to PVC pipe :
- Proceed as for the polyethylene
and polypropylene pipes but spread
PVC adhesive on the pipe where the
ferrules are to be mounted.
- Then place the ferrules over the
pipe using both thumbs in the slot
to widen the ferrule (Fig. 4-C) and
avoid scraping off the adhesive, then
tighten the nut.
NOTE : Wait for one hour before put-
ting into operation.
The ferrule made of polyacetal will
not adhere to the PVC glue and can
therefore be dismantled easily at a
later date.
E
Fig. 4
ASSEMBLING THE DOSATRON (cont...)
NOTE : The maximum suction height is 4 meters (13 vertical feet).
- Fit the hose equipped with its strainer, and immerse it in the solution to
be injected.
- Screw the bypass button (model D20S) to median position (refer to §
"Using for the first time").
IMPORTANT ! - Do not put the suction tube strainer on the bottom of
the stock solution container. The strainer must be suspended at least 10
cm [4"] above the bottom of the tank to avoid sucking up the insoluble
particles that may damage the injection assembly (Fig. 5).
- Do not put the strainer on the ground.
WHAT YOU SHOULD DO
▼
Fig. 5
Under no circumstance should the solution level be above the water
inlet of the Dosatron (to avoid siphoning situations).
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WHAT YOU MUST NOT DO