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VENT VALVE INSTALLATION
The vent valve mod. 969-9833 allows to avoid un-
desired venting of the pump during a temporary
power failure (5 sec maximum), and enables an
automatic vent operation.
Unscrew the threaded plug (see figure below).
Screw the vent valve into the pump inserting the
supplied adapter between the valve and the pump.
Tighten the valve using a 16 mm. hexagonal span-
ner with a torque of 2.5 Nm.
! ! ! !
Do not overtighten the valve as this may damage
the thread on the pump.
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TECHNICAL INFORMATION
CAUTION
87-900-875-01(C)
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