Irregular Variations In Pressure; Troubleshooting - Annovi Reverberi XJS Serie Betriebs Und Installationsanleitung

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 opera-
tions.
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 in 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
Pump sucking in air
Nozzle worn
Worn intake and/or delivery
valves
Valves blocked by dirt
By-pass valve seat worn
Worn gaskets
31
Remedy
Restore the tightness of the
intake line
Increase the size of the intake
lines
Remove any kinks from the pipes
Increase the filter capacity or
clean the filter cartridge
Increase the rpm to the rated
speed
Change the valves (1)
Replace the valve (1)
Replace the gaskets (1)
Replace nozzle
Change the valves (1)
Clean the valves (1)
Restore the tightness of the
intake line connections
Replace the gaskets (1)
Change the valves (1)
Replace the by-pass valve
Restore the tightness of the
intake line
Replace nozzle
Change the valves (1)
Clean the valves (1)
Replace the valve(1)
Replace the gaskets (1)
Use and Installation
8