Operation With A Float Switch; Operation Without A Float Switch; Switching Off Of The Pump; Maintenance - Calpeda MPS Serie Instrucciones De Uso

To check this close the discharge valve and mea-
sure the closed valve pressure with a pressure
gauge mounted between the valve and the pump
discharge, or visually check the flow-rate.
Switch off power, invert the connections of two
phases on the control panel, re-start and check
the pressure or flow rate capacity again.
The correct direction of rotation will provide a con-
siderably greater and easily distinguishable pres-
sure and delivery capacity.
Make sure the pump is operating within its range
of rated performance and that the absorbed cur-
rent indicated on the name-plate is not exceeded.
Otherwise, adjust the delivery gate valve or the
setting of pressure switches if installed.
ATTENTION: never allow the pump to run
for more than five minutes with a closed
discharge valve.
ATTENTION: never run the pump dry,
not even for a short trial run.
Never start the pump before it has been immersed to
a depth of at least 100 mm.
7.2.1 Construction with float switch:
The float switch, connected directly to the pump,
controls starting and stopping.
Check that the float switch is free from any obstacle.
If necessary, adjust the float-switch cable.
Execessive cable length may cause the motor to
overheat and the pump to run dry.
7.2.2 C o n s t r u c t i o n w i t h o u t f l o a t
switch:
If there is no air vent valve in systems with a check
valve, the minimum immersion depth at first start-up
must be 300 mm.
An air vent valve must be used in systems with an
immersed delivery outlet.
Do not start the pump with a completely closed shu-
toff gate valve.
Never take the pump out of the water while the pump
is still operating.
7.3 Switch off of the pump
ON
The appliance must be switch off every
time there
troubleshooting).
The product is designed for a continuous duty,
the switch off is performed by disconnecting the
power supply by means the expected disconnec-
ting devices. (see paragraph "6.5 Electrical con-
nection").
MPS-MXS Rev. 18 - Operating Instructions
are faults. (see

8 MAINTENANCE

Before any operations it's necessary to discon-
nect the power supply.
If required ask to an electrician or to an expert
technician.
Every maintenance operations, cleaning
or reparation executed with the electrical
system under voltage, it could cause
serious injuries to people.
A possible replacement of the cable or the
level switch must be carried out by an
authorised Calpeda service workshop.
If the supply cord is damaged, it must be
replaced by the manufacturer, its service
agent or similarly qualified persons in order
to avoid a hazard.
In case of extraordinary maintenance, or mainte-
nance operations that require part-removing, the
operator must be a qualified technician able to
read schemes and drawings.
It is suggest to register all maintenance operation
executed.
During maintenance keep particular
i
attention in order to avoid the introduction
of small external parts, that could
compromise the device safety.
It is forbidden to execute any operations
with the direct use of hands. Use water-
resistant, anti-cut gloves to disassemble
and clean the filter or in other particular
cases.
During maintenance operations external
i
personnel is not allowed.
Maintenance operations that are not described in
this manual must be made only by special per-
sonnel authorized by Calpeda S.p.A.
For further technical information regarding the use
or the maintenance of the device, contact
Calpeda S.p.A.

8.1 Routine maintenance

OFF
Before every maintenance operations
disconnect the power supply and make sure
that the device could not accidentally
operate.

8.1.1 Summary table

Frequency Description
Monthly Cleaning
Routine maintenance table 4
EN
Paragraph
8.1.2
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