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

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page 58 of 75
Opening the hose clip:
Apply slotted screwdriver as shown and
turn.
Detach the coupling of the connection tube (V)
to the other side of the pump at the valve head
(O).
Pump at pump support:
Detach the coupling of the connection tube (V)
to the other side of the pump as well as the
hose connection to the inlet/outlet of the vacu-
um system at the valve head (O).
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 one/two heads) or
eight (pump with four heads) Allen screws
(H) with a 5mm wide Allen key. Remove
both head covers (J) (pumps with one/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