Technical Data - EBARA 1GP Operating And Maintenance Manual

device activates the automatic rotation of the starting order of
the electric pumps so as to ensure uniform distribution of the
starting operations, and therefore of the working hours (in sets
with more than one pump).
The standard pressure booster sets are divided into:
 GP: sets that operate with fixed speed pumps;
 GPE: sets that operate with variable speed pumps;
 GPJ/GPEJ: sets that operate with fixed (GPJ) or variable
(GPEJ) speed pumps. These differ from the GP/GPE sets
due to the presence of a pilot pump that starts as the first
pump to take care of small pressure losses from the
system, therefore preventing the start of the main pumps
(which are generally larger with a greater consumption
than the pilot pump);
 GPS/GPES: sets that can operate with fixed (GPS) or
variable (GPES) speed pumps. These sets can have
dimensioned conductors to have a system pump that is
inactive (in stand-by).
Similar to these are the configured pressure booster sets with
2/3/4 pumps that have the same control system and pumps as
the standard ones mentioned above.
The control systems for the sets are divided based on if there
is an inverter or not, i.e. a frequency variator that makes it
possible to vary the pump speed, and on the type of inverter.
They are:
 EP control panel: for the actuation of the single-phase or
three-phase pumps at a fixed speed, controlled by
pressure switches;
 EP-E control panel: for the actuation of the single-phase
or three-phase pumps at a fixed speed controlled by a
transducer (one transducer for the entire set);
 SP-EFC control panel: for the actuation of the three-
phase pump with the first pump at a variable speed, and
the others, cascading, at a fixed speed;
 SP-MFC control panel: for the actuation of the three-
phase pump at a variable speed;
 E-Drive inverter: installed on the motor for the actuation
of the three-phase pump at a variable speed;
 E-SPD inverter: installed on the motor for the actuation of
the three-phase pump at a variable speed.
For details concerning the operation of each panel/device, see
the dedicated supplementary manual.
Note: sets with an E-drive and E-SPD control device have a
MASTER pump (the first pump to the left when viewing the set
from the panel side), whose inverter controls the activation
sequence of all pumps.
The sets can be equipped with the following types of pump:
AGA/CDX/2CDX/2CD/CDA/CMA/CMB/COMPACT
/CVM/MATRIX/MD/MMD/EVM/EVML/EVMG/EVMS/EVMSL/E
VMSG/3M/3LM/3S/3LS/3D/3DS/3P/3LP/3DP/GS.
5.2. COMPONENTS
The pressure booster sets are shown in the diagrams in fig. A
in the ATTACHED DIAGRAMS chapter.
The code identifying the models is described in the MODEL
IDENTIFICATION CODE chapter.
5.3. INTENDED USE
The sets are intended for civil, industrial and agricultural
applications in particular for:
 lifting or pumping water;
 cooling;
 heating;
 irrigation;
 washing systems.
The treated liquid must be:
 potable, clean water, rainwater or groundwater, or a
mixture;
 free of solid or fibre bodies in suspension;
 free of aggressive chemical substances;
 at a temperature between 0 and 50°C (EP, EP-E, SP-
EFC, SP-MFC, E-Drive, E-SPD control system).
The installation environment must:
 be covered and protected against the adverse weather
conditions and frost;
 have an ambient operating temperature between 0 and
40°C;
 be at a maximum altitude of 1000 m above sea level;
 have a max. relative humidity of 50% at +40°C.
NB: The sets are designed to operate with a positive head.
If you decide to operate the set with a negative head,
remember that the suction height decreases as the altitude
and temperature increase. These characteristics, in function
of the NPSH of the set, must be kept in consideration when
dimensioning a system in order to avoid cavitation or
insufficient performance: The NPSH available for the system
must be greater than the NPSH required by the set.
Given the set's inlet pressure and the maximum pump head,
make sure not to exceed the maximum outlet pressure
permitted for the relative pump.
5.4. UNINTENDED USE
The sets cannot be used for:
 pumping dirty water;
 pumping water with solid particles in suspension;
 pumping corrosive liquids or liquids with acid substances;
 pumping liquids at a temperature above 50°C;
 pumping seawater;
 pumping inflammable/explosive liquids;
 installation outside without protection against atmospheric
agents or frost;
 operating without liquid;
 operating in ATEX environments.
For special applications that are not included in the Intended
use chapter, contact our technical office.
6.

TECHNICAL DATA

ATTENTION
6.1. SET DATA PLATE
For the data plate, see the DATA PLATE chapter.
ENGLISH
Improper product use could cause
hazardous conditions
personal injury and/or property damage.
Unintended product use can invalidate
the warranty.
The manufacturer reserves the right to
make changes to the technical data to
make improvements and
without prior notice.
as well as
updates,
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