Residual Risks - Zenit blue Manual De Uso Y Mantenimiento

Blue-BluePRO - Translation of the original instructions
ally using the special handle located in the upper section of the pump.
Do not use the electric power cable or the floating switch cable to lift
or move the pump.
Check that the box and its contents are in perfect condition and stop
the installation in the event that any defects or anomalies are found,
EN
then inform the supplier.
INSTALLATION
If the pump is installed inside a shaft, this must be large enough to
allow the floating switch, if installed, to move freely. The manufacturer
recommends the use of shafts which are no smaller than 500mm x
500mm x 500mm. (Fig. 1)
WARNING: Check that the submersible pump has been primed. In
some cases, an air bubble may form in the upper part of the pump
body, which prevents liquid pumping.
WARNING: Before the installation and/or the start-up of the pump
after a long period of inactivity, turn the shaft with the box wrench to
ensure that it rotates freely.
Mobile post (Fig. 2): using a hose union, connect the delivery pipe to
a hose with an internal reinforcement coil and a diameter which is the
same size as or larger than the electric pump outlet.
Fixed post (Fig. 3): connect the electric pump to a metal piping, fitting
a non-return valve and an interception gate valve on the said metal
piping.
This ensures the pump stability is guaranteed by the piping.
The pump can also be connected to polyethylene piping, using the
relative union.
Secure the hose to the union by means of a metal band clamp.
With the joining foot (Figs. 4-5): Fix the joining foot to the bottom of
the tank first, using expansion plugs. Install the delivery pipe with the
relative non-return valve and gate valve.
Engage two guidepipes on the joining foot, fixing them in the upper
part using the spacer bracket provided by Zenit with the joining foot.
This way, the pump can be lowered supported with a chain or cable
hooked around the handle and, thanks to the two guide pipes it will fit
perfectly in place on the foot.
ELECTRICAL CONNECTIONS (Figs. 8-9)
All the operations involved in the connection to the electrical network
must be carried out by skilled labour and in compliance with the leg-
islation in force.
ATTENTION: In the wiring-up stage, connect the yellow-green earth
conductor first, then the others.
For the protection of the electric motor and the safety of the people in
the vicinity, connect the pump to a suitably-scaled differential overload
switch.
CAUTION: pumps may be fitted with automatically-resetting thermal
protection which prevents them from breaking in the event of overheat-
ing; So the pump cooling starts again automatically.
Before installation make sure that:
•
the power line has an earth and complies with the regulations in
force
•
the pump's and float switch cables are not damaged
Before making the three-phase electrical connection, make sure the
rotation direction is correct.
To check the rotation direction, proceed as follows:
- Take the precautions specified in the manual
- lay the pump horizontal on one side and leave it free
- temporarily connect the yellow-green wire to ground and then con-
nect the power supply wires to the contactor;
- make sure there are no people or objects within a radius of at least
1 metre of the pump;
- turn on the start switch for a few moments;
- watch the impeller as it stops through the intake port and check that
it turns anticlockwise.
If the pump is rotating in the wrong direction, invert two of the power
supply wires in the contactor and try again.
Once the correct rotation direction has been obtained, MARK the pow-
6
er supply wire connection positions, REMOVE the temporary electrical
connections and install the pump in the planned position.
FLOATING SWITCH
The electric pump can be supplied with a floating switch and its func-
tioning is completely automatic. Make sure that there is nothing around
that could obstruct the movement.
It is important that the cables do not get in each other's way, twisted up
or stuck in any jutting parts or grips inside the tank (Fig. 6).
The floating switch has an adjustable stroke to allow regulation of the
on and off levels. Make sure that the minimum level does not fall below
the pump's upper shield (Fig. 7).

RESIDUAL RISKS

The risks that cannot be eliminated by the safety measure adopted by
the manufacturer are caused by incorrect use of the pump or by the
user's failure to comply with the safety regulations described in this
manual. In particular, the user must ensure no people and/or animals
come into contact with the fluid when the pump is working.
MAINTENANCE
The pump maintenance and repair operations must be carried out by
workers authorised by the manufacturer; Failure to comply with these
instructions will result in forfeiture of the warranty and jeopardise the
unit's safety.
Before any cleaning and/ or maintenance operations are carried out on
the electric pump, the power supply must be switched.
To disconnect the submersible electric pump from the electricity
mains, first disconnect the phase conductors, then the yellow –green
earth one.
Use the special handle to remove the submersible electric pump from
the tank.
ATTENTION: Before carrying out any operations, check the pump
temperature.
Only work on the pump when it is at room temperature.
Clean the electric pump thoroughly, using a jet of water or specific
products to clean all its parts. When disposing of the waste material,
follow the antipollution rules in force.
Replace any broken or worn parts with original spare parts only.
Given the likelihood that work on the electric pump will be carried out
in confined spaces such as vats, wells, cesspools, tanks or cisterns,
do not underestimate the risks caused by potentially poisonous exha-
lations.
SCRAPPING
Store the electric pump in a suitable place, out of reach of children and
unauthorised persons.
Dispatch the electric pump to an authorised scrapping centre for its
disposal.
Do not dump any parts of the electric pump.