VACUUBRAND RC 6 - Manual (Page 50)

page 50 of 59
➨
Bring the diaphragm into a position, in which
it is in contact with the housing and centered
with respect to the bore.
Assembling the pump heads
➨
Place the head cover over the diaphragm. Check for its correct orien-
tation by aligning it beforehand with the housing cover which has to be
put over it later on.
+
Pay attention that the diaphragm stays positioned centrally so that it
will become clamped uniformly between housing and head cover.
➨
Place the valves at their respective posi-
tions on the head cover.
+
Make sure that the valves are correctly
seated. See figure for the correct position of
the valves: Valves at the outlet with round
centered opening (A) under valve; valves
at the inlet with kidney-shaped opening (B)
beside valve.
➨
Place the housing cover with housing cover insert onto the head cover.
➨
By turning the eccentric bushing, bring the connecting rod into the up-
per turning point position (max. stroke of the rod).
A B
➨
Loosely screw in the Allen head screws at
the head cover diagonally at first slightly
with a 5 mm wide Allen key, then tighten.
+
Recommended torque: 8.9 ft . lb
f
(12 Nm).