7.6.4 Installing vacuum pump MVP 070-3 C
NOTICE
Damage to valves during the exchange process
Incorrect installation of valves can cause damage to the valves as a result of sticking to the head cov-
er.
► Make sure that the valves have the correct mounting orientation.
► Ensure that valve flaps do not cover grooves in head cover or housing cover.
Prerequisites
● Diaphragms installed
● Vacuum pump positioned on its side and supported as necessary
Required tools
● Torx screwdriver,
TX 20
● Screwdriver with flat blade,
2.5 mm
● Flat pliers
IN
EX
IN
EX
Fig. 15:
Valve orientation
IN Inlet side: The valve flap is pointing towards
the pocket in the valve seat.
EX
Outlet side: The valve has the same orienta-
tion as the inlet valve.
Procedure
1. Replace wear parts (valves) according to spare part package.
2. Insert valves and O-rings.
3. Make sure that the valves have the correct mounting orientation.
4. Fit valve cluster together with cup springs (bulge facing upward), including connection hose, hose
clips and connection holders as required.
5. Center valve cluster on valve seat.
6. Ensure that the valve cluster is positioned flush within the noses of the valve seat.
7. Align the square nut of the connection holder with the groove on the head cover.
8. Lightly tighten oval-head screw on connection holder.
9. Fit clamping claws.
10. Lightly tighten countersunk screws on clamping claws.
11. Adjust alignment of valve clusters as necessary.
Maintenance
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