International Conversions; Changing Seals In The Injection Assembly - dosatron D 25 F Manuel D'utilisation

FITTING THE SUCTION TUBE
If the DOSATRON has already been
used, please imperatively refer to:
PRECAUTIONS.
- Unscrew the nut (Fig. 9-E) at the
bottom of the injection assembly and
put it over the hose.
- Push the tube onto the dip tube
insert as far as it will go and screw
up the nut by hand.
- Identical process for viscous pro-
ducts option (Fig. 10-E).
Model in the drawing: D 25 RE 2
CONNECTING THE EXTERNAL INJECTION (IE)
If the DOSATRON has
already been used, plea-
se imperatively refer to
chapter PRECAUTIONS.
ADJUSTING THE INJECTION RATE (with pressure off)
IMPORTANT ! Use no tools
ADJUSTMENT MUST BE MADE WHEN
THERE IS NO PRESSURE IN THE
DOSATRON
- Turn off the water supply and allow the
pressure to drop to zero.
- Unscrew the blocking ring (Fig. 11-B).
- Screw or unscrew the adjusting sleeve
(Fig. 12-D) so as to bring the top of the
sleeve into line with the desired injection
rate.
- Tighten the blocking ring (Fig. 11-B).
Model in the drawing: D 25 RE 2
© DOSATRON INTERNATIONAL / 42
Fig. 10
Fig. 9
ø 12
ø 6
(option V)
E
E
D
B
Fig. 11 Fig. 12

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.
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
advisable to operate the DOSA-
TRON, injecting clean water so as to
rinse through the injection system.
In this way, risks of contact with
concentrated solutions in the injec-
tion assembly are minimized.
During any such intervention, wear
protective eyewear and gloves !
METHOD OF REMOVING SEAL
Fig. 13 : Between finger and thumb,
pinch the component and the seal ;
push towards one side to deform the
seal.
Fig. 14 : Increase the deformation
to grip the part of the seal thus
exposed and pull it out of its groove.
© DOSATRON INTERNATIONAL / 43
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. 13
Fig. 14