Lowara ESH ATEX, Инструкция по установке, эксплуатации и обслуживанию

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32
en - Original instructions
7.9 The electric pump stops, and
then rotates in the wrong direction
Cause Remedy
There is a leakage in
one or both of the
following components:

The suction pipe.

The foot valve or
the check valve.
Repair or replace
the faulty
component.
There is air in the
suction pipe. Bleed the air.
7.10 The pump starts up too
frequently
Cause Remedy
There is a leakage in
one or both of the
following components:

The suction pipe.

The foot valve or
the check valve.
Repair or replace
the faulty
component.
There is a ruptured
membrane or no air
pre-charge in the
pressure tank. See the relevant
instructions in the
pressure tank
manual.
7.11 The pump generates too much
noise
Cause Remedy
Pump
cavitation Reduce the required flow
rate by partially closing the
on-off valve downstream
from the pump. If the
problem persists check the
operating conditions of the
pump (for example height
difference, flow resistance,
liquid temperature).
The motor
bearings are
worn. Contact Xylem or the
Authorised Distributor.
There are
foreign
objects
inside the
pump Contact Xylem or the
Authorised Distributor.
Impeller rubs
on the wear
ring Contact Xylem or the
Authorised Distributor.
Coupling
misaligned Check the coupling
alignment.
Flexible
elements of
the coupling
worn Contact Xylem or the
Authorised Distributor.
Contact Xylem or the Authorised Distributor
with regard to any situations not covered here.