Buchi V-600 - Replacing the Diaphragm

BÜCHI Labortechnik AG Cleaning and servicing | 7
Operation Manual Vacuum Pump V-600 47/65
7.2.3 Replacing the diaphragm
Diaphragms must be replaced if they are defective or dirty and previous cleaning has
not successfully remedied the problem.
1
Fig.27: Pump heads and diaphragms of V-600
1 Diaphragm
Tools required:
 Diaphragm grips (see Spare parts).
Precondition:
R Pump has been shut down.
u Remove the casing front, see Chapter7.2.2 "Dismantling and reassembling pump
head", page43.
u Remove the connecting components, see Chapter "Step 1: Removing connecting
components", page44.
u Remove the fixing ring and pump head, see Chapter "Step 2: dismantling pump
head", page45.
u Grip diaphragm (1) with diaphragm grips and turn counter-clockwise.
u Remove old diaphragm, insert new diaphragm and tighten using the diaphragm
grips.
u Tighten new diaphragm by turning clockwise with the diaphragm grips. When do-
ing so, tighten the diaphragm until the diaphragm grips slip.
u Fit the pump head and fixing ring over the diaphragm and fix in place..
u Refit connecting components.
u Refit casing front.
Fig.28: Diaphragm grips for unscrewing and tightening the diaphragms in the V-600