56 DOSATRON
CHANGING THE DOSING SEALS
- Turn off the water supply and allow the pressure to drop to zero.
- Take off the suction tube of product, unscrew the dosing part as described in
the corresponding chapter and pull downwards to remove it.
- Change the doser body seal (Fig. 23-O) and the plunger seal (Fig. 23-P).
- Unscrew the retaining suction valve (Fig. 23-E) taking care not to lose the
components of the valve, then change the <O> ring (Fig. 24-T) and the valve
seal (Fig. 24-C).
- Re-assemble in the reverse order to the above.
Fig. 23
O
Fig. 24
E
P
T
C
R
A
B
L
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