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VAL_SC Rev24 - Operating Instructions
reverse the connections of two phases.
Check that the pump works within its ield of
performance, and that the absorbed current shown on
the name-plate is not exceeded.
Otherwise adjust the delivery gate valve or the setting
of any pressure switches.
Never run the pump for more than ive
minutes with a closed gate valve.
Never introduce ingers in the suction
opening
unless it is absolutely certain the
electric power has been disconnected (that the
pump cannot be accidentally switched on) and
the impeller has stopped rotating completely.
7.3. Switch off of the pump
ON
The appliance must be switch off every time
there are faults. (see troubleshooting).
The product is designed for a continuous duty, the
switch off is performed by disconnecting the power
supply by means the expected disconnecting devices.
(see paragraph “6.5 Electrical connection”).
8. MAINTENANCE
Before any operations it's necessary to disconnect 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.
If the supply cord is damaged, it must be
replaced by the manufacturer, its service agent
or similarly qualiied persons in order to avoid
a hazard.
In case of extraordinary maintenance, or maintenance
operations that require part-removing, the operator
must be a qualiied technician able to read schemes
and drawings.
It is suggest to register all maintenance operation
executed.
i
During maintenance keep particular 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.
i
During maintenance operations external
personnel is not allowed.
Maintenance operations that are not described in
this manual must be made only by special personnel
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
Under normal operating conditions the pump will not
require maintenance.
Before every maintenance operations
disconnect the power supply and make sure
that the device could not accidentally operate.
The pump may have been immersed
in hazardous substances or products
emanating toxic gases, or may be located
in an environment which is toxic due to
other reasons; make sure all necessary
precautionary measures are taken to avoid
accidents.
Any pumps that require inspection/repair must be
drained and carefully cleaned inside and outside
before dispatch/submission.
Hose down all accessible parts with a jet of water.
If freezing may be expected while the pump remains
inactive and it is not submersed at a safe depth,
remove the pump from the water and leave in a dry
place.
If the pump is temporarily used with incrusting
liquids
(liquids with particles that solidify when
exposed to air in stagnant conditions)
or water
containing chloride
, lush the pump briely with clean
water immediately after use to remove any deposit.
If the pump has not been used for a long time and does
not start or gives no water (but electrical connections
are in order), the pump must be removed from the
water and checked to see if it is choked by any foreign
matter or blocked by sediment, deposits or any other
cause.
8.2. Dismantling the pump
OFF
For
disassembly and reassembly
, refer to the cross-
section drawing.
If the ball bearing (73.00) has to be replaced, remove
the shear pin (64.24) and the screws (70.18) to
separate the motor from the pump (mark irst the
position of the motor-shaft 78.00 in the pump-shaft
64.00).
If the bearing sleeve (52.00) has to be replaced,
remove the screws (14.24), the pump casing (14.00),
the nut or screw (28.04), the impeller (28.00) and the
key (28.20) to draw out the pump shaft (64.00).
8.3. Pumps with IP 55 protection (Special con-
struction)
OFF
To always assure IP 55 degree of protection, it is
necessary to check the following points:
-
Before starting the motors, carefully control the
position of the gasket between terminal box and
its cover. For cable of small size, use a protective
covering between cable and cable gland.
- When disassembling the end shields of the motors,
restore the existing joint using the sealing glue
LOCTITE type 510 or other equivalent sealing
system, if any, and check the perfect assembly of the
sealing ring on the shaft.
9. DISPOSAL
OFF
European Directive
2012/19/EU (WEEE)
The inal disposal of the device must be done by
specialized company.
Make sure the specialized company follows the
classiication of the material parts for the separation.
Observe the local regulations and dispose the device
accordingly with the international rules for environment
protection.
