VACUUBRAND MZ 8C - Manual (Page 45)

page 45 of 52
Replacing the valve at the distributor (outlet side)
➨
Unscrew the two countersunk head screws
(M) at the manifold cover with an Phillips
screw driver. Remove cover plate and man-
ifold cover.
+
Only MD 12C / MV 10C
➨
Loosen the union nut of the hose running directly to the manifold cover
(L) of the distributor (P) with an open-ended wrench (w/f) 17. Loosen
only the union nut at the pump head, not the one at the distributor.
➨
Turn the fitting (Q) with an open-ended wrench (w/f 14) to detach the
hose from the pump head (1/4 of a turn at maximum).
+
Do not remove the elbow fitting from the pump head; during reassem-
bly a leak may result.
M
➨
Note the position and orientation of the valve
(B) and remove.
+
Check valve for damage and replace if nec-
essary. Make sure that the valve is correctly
seated.
➨
Reassemble manifold cover (L) and cov-
er plate (K) and secure with countersunk
screws (M).
B
Notes on assembling fittings and hose connections
(only MV 10C)
The thread of the fittings at the pump heads, at
the inlet and outlet distributors as well as the
hose connectors are sealed with PTFE tape.
+
If the fittings or the hoses have been re-
moved, use new PTFE bond (included in
set of seals) when reassembling.
➨
Wind the thread of the fitting two times coun-
terclockwise with PTFE bond, the hose con-
nectors three times. Ensure that the PTFE
bond ends flush with the fittings.
hose connector
thread