Lowara ESHS ATEX, Инструкция по установке, эксплуатации и обслуживанию

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en - Original instructions
27
(earth) leakage. the electrical system
components.
7.8 The pump runs but delivers too
little or no liquid
Cause Remedy
There is air inside the
pump or the piping.

Bleed the air
The pump is not
correctly primed.
Stop the pump and
repeat the prime
procedure.
If the problem continues:

Check the
suction pipe
for
perfect
tightness.

Replace any
valves that
are leaking.
The throttling on the
delivery side is too
extensive. Open the valve.
The rotation direction of
the impeller is wrong. Change the position of
two of the phases on the
terminal board of the
motor or in the electric
control panel.
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.
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
precharge
in the
pressure tank.
See the relevant
instructions in the
pressure tank manual.
7.11 The pump vibrates and
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).
There are foreign
objects inside the
pump.
Contact Xylem or the
Authorised Distributor.
Contact Xylem or the Authorised Distributor with
regard to any situation not covered here.