Tighten the valve using a 16 mm. hexagonal span-
ner with a torque of 2.5 Nm.
! ! ! !
CAUTION
Do not overtighten the valve as this may damage
the thread on the pump.
VENT DEVICE INSTALLATION
The vent device mod. 969-9831 allows to avoid
undesired venting of the pump during a temporary
power failure (adjustable time up to 36 min.), and
enables an automatic vent operation.
Unscrew and remove the threaded plug (see figure
below).
Screw the flange mod. 969-9109 on the pump, tak-
ing care of the o-ring right position.
Assemble the seal ring and lock the vent device in
position using the KF klamp.
33
TECHNICAL INFORMATION
87-900-878-01(C)
