Changing The Injection Seals; Reference Designation; Troubleshooting - dosatron D 15 F 2 Manual De Utilización

CHANGING THE INJECTION SEALS

- To change the seals, the suction valve and the barbed fitting, 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 hose of product, remove the injection assembly as des-
cribed in the previous chapter.
- Pull downwards to remove the injection assembly.
- For IE-models, also remove the external injection hose.
- Re-assemble in the reverse order to the above.

Reference Designation

REF.:...................................................................... Serial #: ..........................................................
EXAMPLE D... IE
Type of DOSATRON
IE : External Injection
BP : integrated by-pass
V : Viscous Products
(200-400 cSt)
Injection Seals :
AF = Advised for alkaline concentrates PH 7-14
VF = Advised for acid concentrates PH 1-7
Color : - = Blue
P = White
R = Red
V = Green
J = Yellow
O = Orange
H = Hastelloy
Others extensions
(consult us)
© DOSATRON INTERNATIONAL / 46
BP V AF P H ii

Troubleshooting

SYMPTOM CAUSE
Motor piston
DOSATRON does Piston stalled
not start or stop
Maximum flow
exceeded.
Motor piston
is damaged
Injection
Water flowing back Contaminated, worn,
into concentrate or missing suction
container valve parts
No suction of The motor piston
concentrate has stopped
Air leak (inlet) in the
suction hose
Blocked suction
hose or clogged
strainer
Missing or worn
suction valve seal
Missing or worn
plunger seal
Worn injection stem
© DOSATRON INTERNATIONAL / 47
SOLUTION
Reset piston, by hand
1. Reduce flow,
restart unit
2. Check piston valves
seals to ensure correct
position
Return unit to your
service center for repair
Clean or replace them
See motor piston section
Check the tightness bet-
ween nut and suction hose
Clean or replace it
Clean or replace it
Clean or replace it
Replace it