Buchi V-100 - Page 37

BÜCHI Labortechnik AG Cleaning and servicing | 7
Operation Manual Vacuum Pump V-100 37/52
The pump head has two ports, attached to each of which is a connection (4, 5) with a
non-return valve (6) and an O-ring (2). The straight connection (5) leads to the pump
intake/pump outlet. The elbow connection (4) leads to the opposite pump head via the
pump-head connection piece.
u Unscrew the fixing screws on the straight connections (5) and remove the connec-
tions.
u Remove the O-rings (2) from the connections.
u Remove the non-return valves (6) from the connections.
Reassembling and refitting the pump head
u Insert the non-return valves (6) and O-rings (2) inside the connections (4 and 5).
u Fit the straight connections (5) on the pump heads (the elbow connections are re-
fitted later together with the pump-head connection piece).
u Position the pump head on the membrane and fix in place with the four Allen-head
screws.
u Fit the elbow connections (4) together with the pump-head connection piece and
the GL14 cap nuts between the two pump heads.
u Refit the rubber surrounds on the pump intake and pump outlet inside the housing.
u Refit the pump top cover and fix in place with the knurled-head screws.