Fitting The Suction Tube; Adjusting The Injection Rate; Changing Seals In The Injection Assembly - dosatron D8R Manual De Utilización

FITTING THE SUCTION TUBE

If the DOSATRON has already been used, please imperatively refer to § PRE-
CAUTIONS.
- Unscrew the nut (Fig. 15-E) at the bottom of the injection assembly and
put it onto the tube.
- Push the tube onto the barbed fitting as far as it will go and screw up the
nut by hand.
- For the suction tube Ø 20 (D8RV and D8R150), unscrew the nut (Fig. 16-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.
Fig. 15
D8R
E
ø 20
ø 12
(option "V")
ADJUSTING THE INJECTION RATE (with pressure off)
IMPORTANT ! Use no tools.
Adjustment must be made when there
is no pressure in the DOSATRON.
Model D8R
- Unscrew the blocking ring (Fig.
17-B).
- Screw or unscrew the adjusting sleeve
(Fig. 17-D) so as to bring the top of the
sleeve into line with the desired injection
rate.
- Tighten the blocking ring (Fig. 17-B).
© DOSATRON INTERNATIONAL / 46
Fig. 16
D8R150
C
ø 20
B
D
Fig. 17
ADJUSTING THE INJECTION RATE (with pressure off) - cont...
Model D8R150
- Unscrew the blocking ring (Fig. 17-B).
- Screw or unscrew the adjusting sleeve (Fig.
17-D) so as to bring the top of the sleeve
into line with the desired injection rate.
- Tighten the blocking ring (Fig. 17-B).
REMINDER: The quantity of injected product
is proportional to the quantity of water ente-
ring the DOSATRON. 1% ⇒ 1/100, which
means 100 volumes of water + 1 volume of
injected products.
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 advisa-
ble 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. 18 : Between finger and thumb, pinch
the component and the seal ; push towards
one side to deform the seal.
Fig. 19 : 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.
© DOSATRON INTERNATIONAL / 47
Fig. 17
D
B
Fig. 18
Fig. 19