DAB KVC, Instruction For Installation And Maintenance

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ENGLISH
20
9.5 Stopping
Close the interception device on the delivery pipe. If
there is a check device on the delivery pipe, the
interception valve on the delivery side may ramain
open as long as there is back.
For a long period of inactivity, close the interception
device on the intake pipe and, if supplied, all the
auxiliary control connections.
9.6 Precautions
−
The electropump should not be started an
excessive number of times in one hour. The
maximum admissible value is as follows:
Type of pump Maximum number of
starts per hours
KVC - KVCX 30
NKV 10 10
÷
15
NKV 15 - NKV 20 5
÷
10
−
When the pump remains inactive for a long time at
temperatures of less than 0°C, the pump body
must be completely emptied through the drain
cap.
Check that the leakage of liquid does
not damage persons or things,
especially in plants that use hot
water.
−
It is recommended to empty the pump when it is
not running for a long time at normal temperature.
−
The drain plug shall be opened until the pump will
be utilized again.
−
When restarting after long periods of inactivity it is
necessary to repeat the operations described
above in the paragraphs
WARNINGS
and
STARTING UP
.
10. MAINTENANCE
−
In normal operating conditions the electropump
does not require any kind of maintenance.
−
It is recommended to check time by time current
absorption, pressure head at closed valve and
maximum flow.
−
The electropump can only be dismantled by
specialised, skilled personnel in possession of
the qualifications required by the specific
regulations.
−
In any case all repair and maintenance jobs must be
carried out only
after having disconnected the
pump from the power mains.
If the liquid has to be drained out
maintenance, ensure that the liquid
coming out cannot harm persons or
things, especially in using hot water.
The legal requirements on the disposal
of any harmful fluids must also be
complied with.
10.1Modifications and spare parts
Any modification not authorised beforehand relieves the
manufacturer of all responsibility. All the spare parts
must be authentic and all the accessories must be
authorised by the manufacturer
11. TROUBLESHOOTING.
Fault Check (possible cause) Remedy
−
Check the protection fuses.
If they are burnt-out, change them.
−
Check the electric connections. Correct any errors.
−
Check that the motor is live.
The motor does not start and makes
no noise.
−
Motor protector cut-off the motor,
for the single-phased motors, due
to over heating of tag windings. Wait for automatic reset of the motor
protector once the temperature has
fallen below the maximum limit.
−
Check that supply voltage
correspond with voltage on the
pump label.
−
Check the electrical connections.
Correct any errors.
−
Check that all the phases are
present. Restore the missing phase.
The motor does not start but makes
noise.
−
Check for obstructions in the
pump or motor. Remove any obstructions.