70
20901544_E12C+16C_NT Vsel_V1.2_260922
Cleaning and maintenance
10
11
10.
Place both valve terminals
with the disc springs on the
pump heads.
11.
Place the clamping claws
on the valve terminals and
tighten the screw fittings first
by hand, then with a torque
wrench to 3 Nm.
12
13
12.
Carefully press the dia
‑
phragms centrally into the
housing opening, ensuring
they are flush with it.
13.
Hold the pump head pair at
the vacuum pump and wind
in the screw fittings; hex key
size 5.
14
15
14.
Slide the molded hoses back
onto the hose nozzles.
15.
Secure the hose clips on the
hose nozzles, e. g., with flat
nose pliers.
