Operation; Booster Set Shutdown; Starting The Set With Flow Switch; Maintenance And Repair - EBARA 1GP 2CDM 70/10-24 S Manuel D'utilisation Et D'entretien

according to the values indicated in the table in section 5.7.
These values can be adjusted to meet water-use needs within
a certain range as specified below. To check the setting, start
the pump (set switch to "on"/plug in) and slowly close the
delivery isolating valve. Pressure will increase quickly, as in-
dicated by the pressure gauge, and the pump will stop at the
set value as a result of the pressure switch contacts closing.
NB: check the tank's precharge factory setting, as indicated
on the nameplate - whatever the case, it should be adjusted to
a pressure that is 0.3 to 0.5 bar lower than the pump starting
pressure. If pressure does not increase, turn off the set (set
EN
switch to "off"/unplug from power socket), check filling and
then restart. When the pump stops, open the delivery isolating
valve and check that the pump restarts due to the pressure
switch tripping at a pressure roughly equal to the minimum
pressure setting. The pump stopping pressure (system oper-
ating pressure) can be increased or decreased by tightening
or unscrewing setting nut 1 (fig. 1), whilst starting pressure
can be altered by tightening or unscrewing nut 2 (fig. 1) (dif-
ferential). Should you want to increase the pump stopping
pressure (system pressure), make sure the value you want is
not higher than the maximum pressure delivered by the pump,
otherwise the set will never be able to stop. (As also specified
in the "Troubleshooting" table). Remember that every time the
pressure switch setting is changed, you will also have to adjust
the diaphragm tank's precharge accordingly.

10.4. OPERATION

Once you have checked that the pump starts and stops at the
set pressures, the set is ready to use.
Operation is automatic.
Make sure noise, vibration, pressure and voltage levels are
normal.

10.5. BOOSTER SET SHUTDOWN

To shut down the set completely, set the control switch to off
and, for added safety, unplug the set from the power socket.

10.6. STARTING THE SET WITH FLOW SWITCH

Make sure the pump primes properly, then partially open a
cock on the water-use circuit.
TROUBLE
Pump fails to start
Motor runs but pump is
not delivering water
Pump works with lower
flow rate than normal
14
PROBABLE CAUSE
- No mains power
- Not plugged in properly
- Circuit breaker has tripped
- Thermal overload cutout tripped
- Motor or capacitor faulty
- Pressure switch starting pressure too low
- Suction filter clogged
- No water in pump
- No water in well or tank
- Water level too low
- Suction problems
Connect the flow switch to the mains and make sure it re-
ceives power.
The pump starts automatically, with the power ON LED and/or
pump running LED lit.
Once water use demand has ceased and system pressure has
been restored, the flow switch automatically stops the pumps.
For setting and further details, refer to the relevant instruc-
tion booklet.

11. MAINTENANCE AND REPAIR

WARNING
Any maintenance or repair work must always
be performed with the power supply discon-
nected. Such work must be carried out by quali-
fied personal only: failure to comply with this
rule will void the warranty.

11.1. ROUTINE INSPECTIONS AND CHECKS

We recommend you check that the set is operating correctly
at regular intervals - look out, above all, for abnormal vibra-
tions and noise and, in the case of surface pumps, for leaking
mechanical seals.
1GP pressure booster sets require just a few routine checks,
as follows:
– precharge of the diaphragm tank must be checked (0.3-0.5
bar lower than the pressure switch's starting pressure);
– pump starting/stopping pressure must be checked.
If problems are encountered, they can be dealt with by con-
sulting the following chart. Also consult the pump's user
manual.

11.2. MAINTENANCE

See pump manual part 2, the expansion tank manual, and
manual relating to the flow switch, if fitted, for the main and
most common maintenance procedures.
For spare parts, see positions in fig. 6-7.
11.3. BOOSTER SET TROUBLESHOOTING
Also consult the user manuals relating to the pump, dia-
phragm tank and flow switch, if installed.
- Check other loads downstream of this contactor or the
contactor itself
- Plug in properly
- Reset. If it trips again, call in a qualified electrician to
locate the leakage point and repair insulation.
- It resets on its own after a few minutes. If it trips again,
contact your nearest dealer
- Contact your nearest dealer
- Correct pressure switch settings
- Clean the filter
- Fill the pump (see chap. 10.2)
- Lengthen suction pipe or
wait for level to be restored
- Lower the pump
- Clean the foot valve and suction pipe
- Suction pipe with greater diameter
- Replace any elbows installed with wide bends
- Supply voltage has dropped below minimum acceptable
value (see pump booklet)
ACTION