VACUUBRAND PC 620 NT plastic housing - Manual (Page 99)

page 99 of 113
➨
Position new diaphragm (F) between dia-
phragm clamping disc with square head
screw (G) and diaphragm support disc (E).
+
Note: Position diaphragm with pale side
towards diaphragm clamping disc (facing
pump chamber).
+
Make sure that the square head screw of the diaphragm clamping disc
is correctly seated in the guide hole of the diaphragm support disc.
➨
Lift the diaphragm at the side. Place the diaphragm carefully together
with diaphragm clamping disc and diaphragm support disc in the dia-
phragm key.
+
Avoid damage of the diaphragm: Do not excessively bend or crease
the diaphragm.
G
E
F
+
Assemble the original number of washers
(D) between diaphragm support disc (E)
and connecting rod (B).
➨
Screw diaphragm clamping disc (G), dia-
phragm (F), diaphragm support disc (E),
and washers (D) to connecting rod (B).
➨
Optimum torque for the diaphragm support disc: 4.4 ft . lb
f
(6 Nm), it is
recommended to use a torque wrench. Attach torque wrench to dia-
phragm key (hexagonal bolt 6 mm wide).
Note: Never use the diaphragm key with any additional tools like tongs
or Allen keys without appropriate torque limitation.
F
G