Assembling The Pump Heads - vacuubrand ME 4C NT VARIO Instructions For Use Manual

F
E
➨ Optimum torque for the diaphragm support disc: 4.4 ft
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.

Assembling the pump heads

➨ Place the pump in a way that the pump head to be assembled is at the
top. Support the pump appropriately.
➨ Bring the diaphragm (F) into a position in which it is in contact with the
housing (J) and centered with respect to the bore.
➨ Place the head cover (D) over the diaphragm. Check for its correct
orientation by aligning it beforehand with the housing cover which has
to be put over it later on.
+ Pay attention that the diaphragm (F) stays positioned centrally so that
it will become clamped uniformly between housing (J) and head cover
(D).
S
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➨ 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 (B).
➨ Place the valves (B) and the O-rings (C) at
T
their respective positions on the head cover
(D).
+ Make sure that the valves are correctly seat-
ed. See figure for the correct position of the
valves: Valves at the outlet with round cen-
tered opening (S) under valve; valves at the
inlet with kidney-shaped opening (T) beside
valve.
➨ Place the housing cover (A) with housing
cover insert onto the head cover.
lb (6 Nm), it is
.
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