68
20901544_E12C+16C_NT Vsel_V1.2_260922
Cleaning and maintenance
Example
Valve replacement
Replace the valves
1
2
1.
Take the pump head pair
which you had set aside.
2.
Unscrew the Torx screws. Torx
screwdriver, size Tx20.
3
4
3.
Remove the clamping claws
from the valve terminals.
4.
Remove the valve terminals
with the disc springs.
(a)
(a)
Example – view from above:
Valve terminals, valves, O‑rings,
molded hose of a pump head pair.
NOTE
>
The number and wiring of molded hoses
(a)
depends on the
position of the pump head pair. Pump head pairs must not be
interchanged.
>
Valves can adhere to the underside of a valve terminal.
>
Depending on the pump type, the valve material is either PTFE
(white) or FFKM (black).
