Xylem Lowara ResiBoost MMA Series, Installation, Operation And Maintenance Manual, Page: 44 / 244

Cause Solution
Water leaking out of the non-
return valve or out of the sys-
tem.
Check the system
to locate the leaks.
Repair or replace
the components.
Diaphragm tank with broken di-
aphragm, when applicable.
Replace the dia-
phragm.
Operating point is not calibrat-
ed correctly in relation to the
system. For example, value is
higher that the pressure sup-
plied by the pump.
Recalibrate the set
point of the con-
verter.
Operating point is not calibrat-
ed correctly in relation to the
system. Value at zero.
Recalibrate the set
point of the con-
verter.
The utilities are open and the pump does not
start
Cause Solution
Operating point is not calibrat-
ed correctly in relation to the
system. Value at zero.
Recalibrate the set
point of the con-
verter.
The pump runs and there are vibrations in or
near the pump.
Cause Solution
Operating point is not calibrated
correctly in relation to the system.
Value is below the minimum pres-
sure that is supplied by the pump.
Recalibrate the
set point of the
converter.
The pump runs but starts and stops frequently
Cause Solution
There could be a problem
with the level float in the in-
take tank.
Check the float and
the tank.
Cause Solution
There could be a problem
with the pressure switch on
the intake tank.
Check the pressure
switch and the intake
conditions (pres-
sure).
The pump always runs at maximum speed
Cause Solution
There could be a
problem with the
pressure transmitter.
Check the hydraulic connec-
tion between the transmitter
and the system.
Check the working order of
the sensor.
There is air in the sensor or
the hydraulic circuit con-
cerned.
The set point is too
high and the pump
doesn't achieve the
pressure desired.
Change the set point.
The pump is not
primed.
Control the suction condition
of pump.
The main protective device of the system is trig-
gered.
Cause Solution
Short circuit Check the connecting cables.
In the case of a
single-phase
pump, the motor
condenser is faul-
ty.
Replace the condenser if it is
an external one. Contact the lo-
cal sales and service represen-
tative if it is an internal con-
denser.
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
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.
1.2 Terminologie et symboles de sécurité
Niveaux de risque
Niveau de risque Indication
DANGER :
Une situation dangereu-
se qui, si elle n'est pas
évitée, entraînera la mort
ou des blessures graves
AVERTIS-
SEMENT :
Une situation dangereu-
se qui, si elle n'est pas
évitée, peut entraîner la
fr - Traduction des instructions d'origine
44