Annovi Reverberi HRK 13.20 H ET Manuel D'utilisation Et D'installation page 48

Problem
Noisy pump
Pump overheating
Water in the oil
Liquid is leaking from the drain lines
underneath the pump
Oil is leaking from the drain lines
underneath the pump
(1) Operations which must be carried out at an authorised service centre
English
TROUBLESHOOTING
Likely cause
The pump takes in air
Intake and/or delivery valve springs
broken or collapsed
Valves blocked by dirt
Worn bearings
Intake liquid temperature too high
High pump operating pressure
Worn guide piston oil gaskets
High percent humidity in the air
Worn gaskets
Worn gaskets
Worn pistons
Worn guide piston oil gaskets
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Remedy
Restore the seal of the intake line
connections
Replace the valves (1)
Clean the valves (1)
Replace the bearings (1)
Reduce the temperature of the liquid
High pump operating pressure
Replace the gaskets (1)
Change the oil twice as often (with
respect to that stated in the "Routine
Maintenance" table)
Replace the gaskets (1)
Replace the gaskets (1)
Replace the pistons (1)
Replace the gaskets (1)
Use and Installation
8