General Safety Warnings; Technical Construction Characteristics - EBARA 1GP Operating And Maintenance Manual

 disassembly or repair operations were performed by
operators not authorised by EBARA Pumps Europe
S.p.A.;
 faulty operation derives from the incorrect installation
and/or electrical connection, tampering, improper use or
use beyond the limits indicated in this manual;
 corrosive liquids, sandy water, chemically or physically
aggressive liquids were pumped without prior verification
and authorisation by EBARA Pumps Europe S.p.A.;
 if alleged defects were reported more than two months
after discovery;
 the alleged defect depends on normal wear following use.
The following parts, which are normally subject to wear, are
covered by a limited warranty: bearings, mechanical seal, seal
rings, condensers, adjustable pressure switch. For the
warranty covering the various components, refer also to the
relative documents (electric pump, electric panel/control
device/protection panel).
For technical support operations on the set, refer to the
MAINTENANCE chapter.
4.

GENERAL SAFETY WARNINGS

Before starting up the product, it is very important for the user
to know how perform all the operations as described in this
manual and in the other manuals listed in the INTRODUCTION
chapter.
4.1. PREVENTIVE MEASURES BY THE USER
Installation, maintenance and repairs
(mechanical
performed by specialised and qualified
ATTENTION
personnel (refer to the definition of
qualified
INTRODUCTION chapter).
It is prohibited to tamper with, alter or
modify the set, even partially.
It is prohibited to use the set in
conditions or for purposes other than
those indicated in this manual.
The instructions located on the set that
identify hazardous zones and operations
must not be removed, covered or
damaged.
Strictly comply
prevention regulations in force in the
respective countries of installation. Also
carefully
regarding
equipment necessary for the various
operations on the set, referred to in this
manual and in the attached documents
relative to the set components.
Before handling, servicing or repairing
the set or any of its parts, disconnect the
electrical power supply in order to
prevent its accidental start-up which
could injure personnel and/or cause
property damage.
Every maintenance,
handling operation performed on the set
or any of its parts with the electrical
system energised could cause serious
accidents, also fatal.
and electric) must be
personnel in the
with the accident
observe the regulations
the personal protective
installation
4.2. PROTECTIONS AND SIGNIFICANT PRECAUTIONS
4.3. RESIDUAL RISKS
5. TECHNICAL CONSTRUCTION
CHARACTERISTICS
5.1. DESCRIPTION
Pressure booster sets are automatic systems for supplying
water to 1 or more pumps in parallel, for connection to
diaphragm pressure vessels, to tanks with an air cushion, or to
a normal water mains. They are used whenever it is necessary
to increase pressure or it is necessary to keep a water mains
pressurised. Drawing water from the connected system, when
the pumps are stopped, causes the pressure to decrease and
or
the resulting start of the first pump (or pilot pump for the
GPJ/GPEJ sets). If the pressure drop continues or restoring is
not sufficient, the second pump will start, and so on if the set
has a second, third and fourth pump (main pumps for the
GPJ/GPEJ sets). The restoration of the pressure in the system
causes the staggered stopping of the pumps. An electronic
ENGLISH
Before starting the system, check that
all the electric devices and components,
including the cables, are correct.
Do not start up the set with bare feet or,
even worse, when standing in water or
with wet hands.
The device is not intended to be used by
people (children included) with reduced
physical, sensory or mental capabilities,
or lack of experience and knowledge
unless they have been given instruction
concerning the safe
equipment and have been made aware
of the hazards connected with it by a
person responsible for their safety, or if
they use it under his or her supervision.
Children must not play with the device.
All of the set components have been
designed such that the moving parts
have been made harmless through the
use of protective casings.
manufacturer declines
damaged is caused as a result of
tampering with these devices. Do not
repair and/or adjust
components while the
operating.
Each conductor or energised part is
electrically isolated from the ground;
there is however a supplementary safety
mechanism through
conductive parts are connected to an
earth conductor to ensure that accessible
parts do not become hazardous if the
main insulation is damaged.
While maintenance is being performed,
there is the risk of working on moving
parts while the set is operating. Make
sure to disconnect the electrical power
supply before performing any work.
While maintenance is being performed,
there is the risk of working on live parts
while the set is operating. Make sure to
disconnect the electrical power supply
before performing any work.
use of the
The
all liability if
mechanical
machine is
which the
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