VACUUBRAND MZ 2C NT VARIO without controller (o.C.) - Manual (Page 58)

page 58 of 76
➨
Insert O-rings (M) and valves (N). See fig-
ure for the correct position of the valves:
+
Inlet side (IN):
Marked ”IN” next to the valve seat. The
valve tongue points at the kidney-shaped
orifice in the valve seat.
+
Outlet side (EX):
Marked with ”EX” next to the valve seat. The
valve is oriented the same direction as the
valve at the inlet side.
EX
IN
➨
Position valve heads (O), with hose nozzle
(P), if applicable, connection tube or con-
nection fastener (Q), and disc springs (R)
on the valve seats. Position disc springs
with large opening downwards. Pay atten-
tion to the correct orientation of the valve
heads.
+
Center the valve head with respect to the
valve seat. The valve head must lie flat on
the valve seat.
M
N
O
R
➨
Position clamping bracket (S) with counter-
sunk bores facing upwards.
➨
Align the countersunk bores with the thread-
ed pegs.
➨
Loosely fasten the countersunk screws and
correct the alignment of the valve heads if
necessary.
➨
Tighten countersunk screws with Torx screwdriver T20.
+
Torque: 2.2 ft . lb
f
(3 Nm).
Valve head with gas ballast or hose nozzle connection:
➨
Insert square nut (K) in the groove of the head cover (J) or position
square nut in the groove and then screw on connection fastener.
+
Loosely fasten fillister head screw (L).
S