Maintenance - EBARA 1GP Operating And Maintenance Manual

 make sure that the set is full of water;
 open the pump intake ("i") and delivery ("h") isolating
valves;
 close the valve downstream of the system;
 provide voltage to the electrical panel or the protection
panel ("m");
For versions with the EP/EP-E/SP-EFC/SP-MFC control panel
 start the first pump in the set manually. For the procedure
to follow, see the attached manual for the electrical panel.
After checking that it starts, stop the pump manually;
 manually start the other pumps in the set one at a time (if
present). For the procedure to follow, see the attached
manual for the electrical panel. After checking that each
single pump starts, stop each manually before proceeding
with the next one;
 switch the set's operating mode to "automatic". For the
procedure to follow, see the attached manual for the
electrical panel;
 slowly open the isolating valve downstream of the system.
the unit will activate automatically. Check the activation of
the pumps, when starting and stopping, manoeuvring the
downstream valve; if the pressure switches need
adjusting, proceed as indicated in the MAINTENANCE
AND REPAIR chapter.
For versions with an E-Drive/E-SPD control device
 slowly open the isolating valve downstream of the system.
the set will activate automatically. Check the operation of
the pumps, when
manoeuvring the downstream valve.
NB: avoid prolonged operation with the isolating valve
downstream of the system closed, to prevent damaging the
pump (internal overheating).

11. MAINTENANCE

Extraordinary maintenance and repair
operations
ATTENTION
qualified
definition of qualified personnel in the
INTRODUCTION chapter). Failure to
observe this rule voids the warranty and
puts the health of workers and the
efficiency of the set at serious risk.
Every maintenance and repair operation
must be
disconnected from the electrical power
supply.
Pressure booster sets
maintenance. The operations to perform are divided between
ordinary and extraordinary maintenance operations depending
on the skills required for the relative operation. Also refer to the
instruction manual for the electric pump, the electric panel or
the control device. Any problems can be solved by consulting
the table below. It is recommended in case of a problem not
indicated in the table, for operations indicated in the table that
require the intervention of qualified personnel (refer to the
definition of qualified personnel in the INTRODUCTION
chapter) or for other requirements, to contact your closest
service centre or distributor.
11.1. ORDINARY MAINTENANCE
Ordinary maintenance consists of simple control operations
that can be performed by the operator who uses the set. The
starting and when
must be performed
personnel (refer to
performed with the
do not require any
frequency of the checks is indicated in detail for each
operation.
 Check the state of wear of the set's electrical cables and
the electrical connections. If breakage or deterioration is
found in the cable's protective sheaths, in the case of
insecure connections or any faults, contact your closest
service centre or distributor. (EVERY 6 MONTHS).
 Check that the set is operating efficiency by opening the
valve downstream of the set itself to check that the pumps
start,
"STARTING THE SYSTEM" chapter. If problems are
found when starting the pumps, contact your closest
service centre or distributor. (MONTHLY).
 Check that the hydraulic connections upstream and
downstream of the pressure booster system do not leak
while the system is operating. Check that the system
isolating and stop valves are not clogged. If necessary,
restore the line to its original state. (EVERY 6 MONTHS).
11.2. EXTRAORDINARY MAINTENANCE
Extraordinary maintenance, just like the repair operations, may
only be performed by qualified personnel (refer to the definition
of qualified personnel in the INTRODUCTION chapter).
If faults are found during operation and ordinary maintenance
(see what is described in the ordinary maintenance chapter) or
if abnormal noises or vibrations are detected, stop the set and
immediately contact your closest service centre or distributor
(the complete list of resellers and service centres can be
viewed at www.ebara.it) for the suitable extraordinary
maintenance operations.
stopping,
11.3. FAULT AND INTERVENTION TABLE
Fault
The set
does not
start
by
the
set
particular
Faulty
operation of
the unit with
vibrations
and noise
Pumps
continuously
operating
ENGLISH
following the procedure
Probable causes
Interruption of the
electrical power
Power supply cable
not connected
properly or
interrupted
Electrical
connections between
set components
interrupted
Problem related to
the control
panel/control
device/protection
panel
Friction between
rotating parts and
fixed parts
Defective bearings
The set operates
outside the curve
Pressure switches
not calibrated
correctly (if present)
described in the
Interventions
Contact your electric
energy supplier
Correctly restore the
connection
Correctly restore the
connections
Check the fault and
intervention in the
attached control
panel/control device/
protection panel
manual
Check the impellers,
shafts and seals
Replace the
bearings
Adjust the work
conditions
Recalibrate the
pressure switches or
replace them
7