Manual; The Pump Vibrates And Generates Too Much Noise; The Pump Starts Up Too Frequently; Introduction Et Sécurité - Lowara ESH Serie Manual De Instalación, Funcionamiento Y Mantenimiento

Cause Remedy
Valves are locked in Disassemble and clean the
closed or partially valves.
closed position.
The pump is clog- Contact the local sales and
ged. service representative.
The piping is clog- Check and clean the pipes.
ged.
The rotation direc- Change the position of two of
tion of the impeller the phases on the terminal
is wrong . board of the motor or in the
electric control panel.
The suction lift is Check the operating condi-
too high or the flow tions of the pump. If necessa-
resistance in the ry, do the following:
suction pipes is too
• Decrease the suction lift
great.
• Increase the diameter of
7.9 The electric pump stops, and
then rotates in the wrong direction
Cause
There is a leakage in one or both
of the following components:
• The suction pipe
• The foot valve or the check
valve
There is air in the suction pipe.
7.10 The pump starts up too
frequently
Cause
There is a leakage in one or
both of the following compo-
nents:
• The suction pipe
• The foot valve or the check
valve
1 Introduction et sécurité
1.1 Introduction
Objet de ce manuel
L'objet de ce manuel est d'apporter les informations
nécessaires pour :
• Installation
• Utilisation
• Entretien
ATTENTION :
Lire attentivement ce manuel avant d'ins-
taller et d'utiliser ce produit. Une mauvai-
se utilisation du produit peut entraîner
the suction pipe.
Remedy
Repair or re-
place the faulty
component.
Bleed the air.
Remedy
Repair or replace
the faulty compo-
nent.
fr - Traduction des instructions d'origine
Cause
There is a ruptured membrane
or no air pre-charge in the pres-
sure tank.
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 tempera-
ture).
The motor bear- Contact the local sales and serv-
ings are worn. ice representative.
There are foreign Contact the local sales and serv-
objects inside ice representative.
the pump.
Impeller rubs on Contact the local sales and serv-
the wear ring ice representative.
Coupling mis- Check the coupling alignment.
aligned
Flexible ele- Check and replace the relevant
ments of the parts if there is any sign of wear.
coupling worn
For any other situation, refer to the local sales and
service representative.
des blessures et des dégâts matériels et
pourrait annuler la garantie.
REMARQUE :
Conserver ce manuel pour une consultation ultérieu-
re et veiller à ce qu'il puisse facilement être consulté
sur le site à tout moment.
1.1.1 Utilisateurs sans expérience
AVERTISSEMENT :
Ce produit est destiné à être utilisé par
du personnel qualifié exclusivement.
Respecter les précautions ci-dessous :
Remedy
See the relevant
instructions in the
pressure tank

manual.

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