VACUUBRAND MV 2 NT VARIO - Manual (Page 95)

page 95 of 106
➨
Position new diaphragm (F) between dia-
phragm clamping disc with square head
screw (E) and diaphragm support disc (G).
+
Note: This is a double diaphragm consist-
ing of two single diaphragms! Put the two
diaphragms together with the printed sides
outwards.
+
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.
E
G
F
+
Assemble the original number of washers
(H) between diaphragm support disc (G)
and connecting rod (I).
➨
Screw diaphragm clamping disc (E), dia-
phragm (F), diaphragm support disc (G),
and washers (H) to connecting rod (I).
➨
Optimum torque for the diaphragm support disc: 4.4 ft . lb
f
(6 Nm), it is
recommended to use a torque wrench. Attach Allen key to diaphragm
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
E
Assembling the pump heads
➨
Bring the diaphragm (F) into a position, in which it is in contact with the
housing (J) and centered with respect to the bore.