Changing The Dosing Seals; Troubleshooting - dosatron D14 Série Manuel D'utilisation

CHANGING THE DOSING SEALS

Please refer to the drawings of the different models at the end of this
manual
- Change the seals once a year.
- Turn off the water supply and allow the pressure to drop to zero.
- Take off the suction tube of product (Fig. 17).
- Unscrew the retaining ring (Fig. 18).
- Pull downwards to remove the injection assembly (Fig. 19).
- Change the seals, the suction valve and the barbed fitting.
- Re-assemble in the reverse order to the above by hand.
Fig. 17 Fig. 18
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5 5
CLEANING AND RE-ASSEMBLING THE SUCTION VALVE SEAL
- Turn off the water supply
and allow the pressure to
drop to zero.
- Unscrew the nut and pull
downwards to remove the
suction tube(Fig. 20).
- Unscrew and take off the
suction valve retaining nut
(Fig. 21), pull out the valve
assembly, dismantle the valve
and thoroughly rinse the
separate components in clean
water.
- Put the valve components
in the order shown in the
diagram (Fig. 22).
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Fig. 19
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5
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5 5 5
Fig. 20 Fig. 21 Fig. 22

Troubleshooting

SYMPTOM CAUSE
Motor piston
Piston stalled.
Air has not been bled from
unit.
DOSATRON
does not start
or stops
Maximum flow exceeded.
Motor piston is damaged.
Injection
Contaminated, worn, or
missing check valve parts.
Water flowing
For IE model: injection module
back into
membrane and umbrella valve
concentrate
damaged
container.
For IE model: Non-return
valve and umbrella valves
damaged or scaled
The piston motor has stopped. See Motor piston section.
Air leak (inlet) in the suction
tube.
For IE model: External
injection pipe obstructed or
scaled.
No suction of
Blocked suction tube or
concentrate.
clogged strainer.
Missing or worn plunger seal.
Worn injection stem
© DOSATRON INTERNATIONAL S.A.S / 34
SOLUTION
Reset piston, by hand.
Bleed air from unit, by bleed
button.
1. Reduce flow, restart unit.
2. Unscrew the top cap. Take
off the piston and check
piston valves seals to
ensure correct position.
Return unit to your service
center for repair.
Clean or replace it.
Replace the membrane and
the valve seat
Descale or replace the non-
return valve and the valve
seat
Check the tightness bet ween
nut and suction hose.
Descale or replace the
external injection pipe
Clean or replace it.
Clean or replace it.Version
WL3000 : replace the
complete plunger assembly
(plunger+seal)
Replace it.