Filter Application - Bertolini GIARDINAGGIO Serie Manual De Uso Y Mantenimiento

3.8

Filter application

Use of suction filters with closing valves of an inadequate capacity will
immediately void the warranty.
Never use on line filters (between the pump and the regulating valve) instead of suction
filters (prior to the pump).
The on line filters must only be installed after the regulating valve, on the delivery line
before the nozzles.
Suction filters with automatic closing valve must be sized with an adequate capacity after
inspection of the clear passage area, which must not be less than that of the pipe fitting
supplied with the pump.
For example:

Poly 2180 pump - flow rate 170 l/min.

Ø 45 standard suction pipe fitting at 90°

Suction filter without valve, with 32 mesh cartridge
If a three-way valve and/or a suction filter with automatic closing valve is added to the
circuit, this latter must be modified in the following way:

Ø 50 suction pipe fitting at 90°

Suction filter with automatic closing valve, with 32 mesh cartridge.
The filtering capacity of the suction filter must be at least two and a half times the pump
flow rate, and the recommended diameter of the holes must be:

32 mesh for charging cartridge from the pump suction
Suction filter
without valve
Suction filter with
closing valve
(NOT
RECOMMENDED
ON THE INTAKE)
67