International Conversions; Changing Seals In The Injection Assembly - dosatron D 45 RE 3000 Gebrauchsanweisung

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

Frequency : Once per year.
IMPORTANT ! Use no tool or
metallic utensils
ADVICE : Before dismantling
any part of the injection assem-
bly it is advisable to operate the
DOSATRON, injecting clean water
so as to rinse through the injec-
tion system. In this way, risks of
contact with concentrated solu-
tions 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 deforma-
tion to grip the part of the seal
thus exposed and pull it out of its
groove.
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DOSATRON INTERNATIONAL / 42
(with pressure off)
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
CHANGING SEALS IN THE INJECTION ASSEMBLY
CLEANING AND REFITTING THE SUCTION VALVE
N
E
T
Fig. 16
Fig. 17
- Close the water supply and let the pressure drop to zero.
- Unscrew the nut (Fig. 16-E) and pull downwards to remove the suction
hose (Fig. 17-T).
- Unscrew and remove the nut (Fig. 17-N).
- Pull downwards to remove the suction valve assembly (Fig. 17).
- Rinse copiously the different parts with clean water, re-assemble them
(Fig. 18).
- Refit the suction valve (Fig. 18-P), according to the 3 pump types, into
the injection stem (Fig. 18-D), push as far as it will go.
- Check that the return spring is working.
- Re-assemble in the reverse order to the above by hand.
NOTE : For IE models, remove the external injection hose. See
CONNECTING THE EXTERNAL INJECTION.
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DOSATRON INTERNATIONAL / 43
(cont...)
D
D D D
P
P P
P
Fig. 18