VACUUBRAND MZ 2C NT VARIO without controller (o.C.) - Manual (Page 55)

page 55 of 76
Opening the hose clip:
➨
Apply slotted screwdriver as shown and
turn.
➨
Open the hose clip (U) with a slotted screw-
driver.
➨
Pull the tubing off the hose connector.
➨
Disassemble head covers (J) to check the
diaphragm (F).
➨
Unscrew four (pump with two heads) or eight
(pump with four heads) Allen screws (H) with
a 5mm wide Allen key. Remove both head
covers (J) (pumps with two heads: only one
head cover) together with valve heads (O)
and connections.
+
It is not necessary to disassemble the valve
heads (O), the connection fasteners (Q), or
the hose connection between the adjacent
head covers (pumps with four heads).
Replacing the diaphragm
J H
O
Q
+
Check diaphragm (F) for damage and re-
place if necessary.
➨
Lift diaphragm carefully sidewise.
+
Never use a pointed or sharp-edged tool to
lift the diaphragm.
➨
Use the diaphragm key to grip the diaphragm
support disc (E) below the diaphragm.
➨
Unscrew diaphragm support disc (E) with diaphragm (F) and dia-
phragm clamping disc (G).
F
G