Cleaning and maintenance
20901334_EN-US_PC3000 VARIO select Serie_V1.4_061022
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11. Then place a torque wrench
with a hexagon socket bit
onto the membrane wrench
and tighten the assembly to
6 Nm.
12. Repeat the steps for chang-
ing the second membrane.
Replacing valves
-> Example
Valve change
Fig. 2–4 optional de-
scription, only ap-
plies to pump head
with gas ballast GB
1. Take the pump head pair
that was set aside.
2. Pull off the gas ballast cap.
3. Carefully pry open the
cover.
4. Undo the screw fastener;
Torx screwdriver TX20.
