vacuubrand MD 4C NT + 2 AK, Instructions For Use Manual

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page 62 of 75
Position clamping bracket (S) with counter-
sunk bores facing upwards.
Align the countersunk bores with the thread-
ed pegs.
correct the alignment of the valve heads if
necessary.
Tighten countersunk screws with Torx screwdriver T20.
Torque: 2.2 ft
.
lb
f
(3 Nm).
Bring the diaphragms (F) into a position, in
which they are in contact with the housing
(C) and centered with respect to the bore.
Put on head cover (J) with valve heads (O)
and connections attached.
Pay attention to the correct orientation of
the head covers:
Housing with head alignment pin: The head
alignment pin (A) at the pump housing (C)
(J).
Housing with mark (A): Align the recess at
the head cover with the mark at the pump
housing.
with a 5 mm wide Allen key, then tighten.
Recommended torque: 8.9 ft
.
lb
f
(12 Nm).
Slide the caps (I) into the head cover.
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.