Annovi Reverberi RS Serie Notice D'utilisation Et Installation page 39

The information provided is intended to provide guidance on how to deal with malfunctions which may occur
during use.
Some of these procedures may be carried out by skilled staff, while others have to be performed at specialised
service centres since they require the use of specific equipment as well as detailed knowledge of repair
operations.
Problem
Pump does not reach the
specified pressures
Irregular variations in pressure
Vibrations on pipes
Pressure drop
(1) Operations which must be carried out at an authorised service centre
English
TROUBLESHOOTING
Cause
Pump sucking air
Intake flow rate insufficient
Worn intake and delivery valves
By-pass valve seat worn
Worn gaskets
Unsuitable, worn nozzle
Worn intake and delivery valves
Valves blocked by dirt
Air being sucked into system
Worn gaskets
Valves jammed
By-pass valve malfunction
By-pass valve dump line too small
Pressure damper flat
Pump sucking air
Nozzle worn
Worn intake and/or delivery
valves
Valves blocked by dirt
By-pass valve seat worn
Worn gaskets
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Remedy
Restore the tightness of the
intake line
Increase the size of the intake
pipelines
Remove any kinks from the pipes
Increase the filter capacity or
clean the filter cartridge
Increase the rpm to the rated
speed
Replace the valves (1)
Replace the valve
Replace the gaskets(1)
Replace nozzle
Replace the valves (1)
Clean the valves (1)
Restore the tightness of the
intake pipeline connections
Replace the gaskets(1)
Replace the valves (1)
Replace the by-pass valve
Increase size of by-pass valve
dump line
Restore pressure damper to
correct inflation pressure
Restore the tightness of the
intake line
Replace nozzle
Replace the valves (1)
Clean the valves (1)
Replace the valve
Replace the gaskets (1)
Use and Installation
8