dosatron D3 Serie Manual De Utilización página 41

SYMPTOM CAUSE
Injection
Suction of air.
Dirty or worn check valve
Under injection. seal.
Max. flow exceeded (cavitation). Reduce flow.
Worn plunger seal.
Worn injection stem
For the IE models,
external injection module
and injection T scaled or
damaged.
Leaks
Leaks in the
Injector sleeve seal is
vicinity of the
damaged or positioned
fixing ring under
incorrectly.
the body housing.
Leaks between
Injector stem seal damaged,
the setting sleeve
positioned incorrectly or
and the blocking
missing.
ring.
Leaks between Screw-top seal is damaged,
the body and positioned incorrectly or
screw-top. missing.
©
DOSATRON INTERNATIONAL S.A.S / 65
SOLUTION
1. Check the tightness of
the nuts in the injection
area.
2. Check suction tube.
3. For the IE (external
injection) versions, verify
the condition of the
external injection pipe
Clean or replace it.
Replace it.
Replace it.
Check the condition of the
umbrella valves, of the
membrane and of the non-
return valve. Descale or
replace them as necessary.
Replace it.
Replace it.
Unscrew the screw-top, clean
the seal seating, replace or
change the seal. Position
correctly the screw-top.
SYMPTOM CAUSE
Leaks
Leak between the
Seal of the injection module
injection module
damaged, incorrectly
and the doser body
assembled or absent
(WL IE models)
External leak
Nut incorrectly tightened or
from the injection
membrane damaged.
module lateral nut.
Internal seals damaged,
Leaks from the
incorrectly assembled or
injection T.
absent.
THE MANUFACTURER
DECLINES ALL RESPONSIBILITY IF THE DOSATRON
IS USED IN CONDITIONS THAT DO NOT CORRESPOND
TO THE OPERATING INSTRUCTIONS AS INDICATED
IN THIS MANUAL
©
DOSATRON INTERNATIONAL S.A.S / 66
SOLUTION
Position it correctly, clean
the seal seat bearing or
replace it.
Clean the membrane,
replace it if necessary
and re-tighten the nut.
Replace.