Pay attention to the following during installation of the pump head:
► When reassembling, first insert the valve pin into the venting
duct guide on the pump head to avoid damaging it.
1. Loosen the cross-slotted screw of the cover.
2. Loosen the hexagon socket screws.
3. Replace damaged components.
4. Clean the valves, if necessary.
5. Complete assembly of the pump head.
6. Tighten the hexagon socket screws – tighten evenly cross-
wise.
7. Check the function and leak tightness of the pump.
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