User guide

page 87 of 102
➨ Disassemble head covers (J) to check the
diaphragm (F).
➨ Unscrew four (pump with two heads) or eight
(pump with four heads) Allen screws (H) with
a 5mm wide Allen key. Remove both head
covers (J) (pumps with 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
J
H
O
+ Check diaphragm (F) for damage and re-
place if necessary.
➨ Lift diaphragm carefully sidewise.
+ Never use a pointed or sharp-edged tool to
lift the diaphragm.
➨ Use the diaphragm key to grip the diaphragm
support disc (E) below the diaphragm.
F
G
PC 600 LAN NT,
outlet side