E-Tech EH series - Manual (Page 6)

11 10
● L’elettropompa non funziona all’avviamento
● La protezione termica del motoavviatore interviene al momento dell’accensione
● La protezione termica del motoavviatore interviene occasionalmente
● La portata risulta ridotta o non costante
● L’elettropompa gira ma non eroga acqua
● L’elettropompa vibra
Possibili cause imputabili alla elettropompa Soluzione
█ Mancanza di tensione elettrica Collegare la tensione elettrica
█ Fusibili bruciati Cambiare i fusibili
█ Protezione termica intervenuta Ripristinare la protezione termica
█ Guasto nei contatti del termico del motoavviatore Sostituire i contatti del motoavviatore
█ Collegamento dei cavi difettoso Fissare o sostituire i cavi
█ Blocco meccanico dell’elettropompa Eliminare il blocco meccanico
dell’elettropompa
██ Taratura del relè termico troppo bassa Tarare correttamente il motoavviatore
█ Bassa tensione durante i picchi Controllare l’alimentazione elettrica
█ Pressione in aspirazione troppo bassa (cavitazione) Controllare l’NPSH dell’elettropompa
██ Collettore di aspirazione / elettropompa parzialmente
ostruiti dalle impurità Pulire l’elettropompa o il collettore di
aspirazione
█ L’elettropompa aspira aria Controllare le condizioni di aspirazione
█ Valvola di fondo o di ritegno bloccate in posizione chiusa Riparare la valvola di fondo o di ritegno
█ Perdita nel collettore di aspirazione Riparare il collettore di aspirazione
█ Presenza di aria nel collettore di aspirazione o
nell’elettropompa Controllare le condizioni di aspirazione
█ Il motore dell’elettropompa ruota nel senso errato Cambiare il senso di rotazione del motore
█ Ancoraggio sul plinto difettoso Verifi care e avvitare completamente i dadi dei
bulloni delle viti prigioniere
█ Corpi estranei ostruiscono l’elettropompa Far smontare l’elettropompa e pulirla
█ Rotazione "dura" dell’elettropompa Verifi care che l’elettropompa giri liberamente
senza opposizioni anormali
█ Collegamento elettrico difettoso Verifi care i collegamenti dell’elettropompa

EN 
SAFETY RULES
NOTE: Before installing and using the electrical
pump, carefully read the instructions provided below.
This manual contains fundamental instructions that
must be followed during installation, operation and
maintenance. This manual must be consulted by the
person in charge of assembly and by all qualifi ed
personnel who will follow its operation, as designated by
the installation manager. In addition, this manual must
always be available at the location where the electrical
pump is used.
Identifi cation of the coded instructions contained in
this manual
m The safety rules in this manual whose lack of
observance can cause physical damage are
marked with the general danger symbol.
Risks deriving from the failure to observe safety rules
The failure to respect the safety rules can cause physical
and material damage in addition to possibly polluting the
environment. The failure to observe safety rules can void
the warranty.
To cite a few examples, the failure to respect safety rules
can cause:
• the failure of the installation or the electrical pump’s
principal functions,
• compromised maintenance operations,
• mechanical or electrical damage to people
General Information
This electrical pump has been manufactured using the
most recent and advanced techniques, in full respect for
laws in force, and has been subjected to strict quality
control.
This manual will help you understand its operation and will
help you become familiar with its possible applications.
The operation manual contains important
recommendations for the correct and economical
operation of the electric pump. It is necessary to respect
these recommendations in order to guarantee its
reliability and
longevity, as well as to avoid the risk of accident deriving
from improper use.
The electrical pump must never be used outside the
limitations described in the technical specifi cations. It is
necessary to respect the instructions regarding nature,
density, temperature, fl ow rate and pressure of the
pumped liquid, speed and direction of rotation and power
of motor as well as all other instructions contained in this
manual or in the documentation attached to the contract.
The name plate indicates the model, the principal service
specifi cations and the serial number. It is important to
provide this information when requesting assistance or
support and to request replacement parts.
The manufacturer declines all responsibility in the case
of accident or damage caused by negligence, improper
use of the electrical pump or the failure to observe
the instructions provided in this manual or use under
conditions other than those stated in the name plate data.
m Appliance is not to be used by children or
persons with reduced physical, sensory or
mental capabilities, or lack of experience and
knownledge, unless they have been given
supervision or instruction.
m Children being supervised not to play with
appliance.
1. PRELIMINARY INSPECTION
1.1 Delivery and Packing
The electric pumps are supplied in their original package,
where they shall remain until installation.
The electric pump should not be exposed to unnecessary
shocks and collisions.
1.2 Storage and handling
Storage temperature:
From -20°C to +60°C
The electric pump should not be exposed to sunlight.
During standstill, the electric pump is to be protected
against frost and weathering. During handling, the
electric pump can be supported as shown in Figure 2.C
on page 5.
Extract the electric pump from the package and verify its
integrity. Also, verify that the rating plate data correspond
to those required. In case of any malfunction, contact
your supplier immediately, indicating the type of defects.
m If you are unsure about the safety of the electric
pump, do not use it.
ELECTRICAL PUMP IDENTIFICATION CODE
2. APPLICATIONS
The horizontal multistage centrifugal electric pumps
are suitable for a wide range of applications. From
agricultural use to the civilian and industrial ones, such
as for example: water supply for private dwelling units,
water tanks, watering, small irrigation, pressurization, air
conditioning, etc...
2.1 Liquids Pumped
Clean, non-aggressive liquids compatible with the
materials used to construct the pump, without solid
particles or fi bres.
Any sand in the water must not exceed 50 g/m³. A higher
concentration of sand will reduce the life of the electrical
pump and increase the risk of its locking up.
60 Hz (without this digit it is a 50 Hz pump)
Blank for single-phase version. (T) for three-phase version
Number of stages
Rated flow rate m³/h
Electrical pump model
EH 3 6 / 7 T