Wilo COE-2-EMHIL Instrucciones De Instalación Y Funcionamiento página 9

8. Commissioning
ATTENTION! Never let the booster run as dry
over a few seconds. Dry running may damage the
mechanical seal.
Before switching on for the first time, check that
the customer's wiring has been done correctly,
particularly the earthing.
ATTENTION! Tighten all the supply terminals
before starting the booster.
When switching on the ElectronicControl imme-
diately carries out a diagnosis that lasts 10
seconds and will display the model type and
software version. The led
In case of a pump at suction, the priming of the
pump shall be done manually (manual mode).
During the priming step (see operating instruc-
tion of the pump) it may drive the pump at its
maximum speed.
As soon as the pump is priming on, the
ElectronicControl can be switched on Automatic
mode.
8.1 Tank inflating
With no water in the tank pressurize the tank to
a pressure 0.3 bar lower than the starting pres-
sure of the pumps.
ATTENTION! Do not exceed the maximum value
of tank first-inflating.
8.2 Filling - Degazing
Connection to public water supply or on load
to a tank
- Check the water supply origin (adequate water
level in the tank).
- Open the booster supply valve to get water
inside.
- Open the filling plugs (Fig. 1, pos. 5) of the
pumps and wait as long as water is getting inside
before closing them again.
- Keep the switch on "HAND" to check priming. If
need be test the pumps one after the other.
Connection on suction to a tank
- Close the delivery valve.
- Open the suction valve.
- Screw off the filling plugs and remove them.
- With a funnel placed inside the port, fill in slowly
and completely the pumps and the suction pipes.
- After water and air exit, filling is finished.
- Screw on the filling plugs (Fig. 1, pos. 5).
- Set the switch on "HAND" to check priming. If
need be test the pumps one after the other.
8.3 Motor sense of rotation
The electric connection of the pumps to the
control box is performed in the factory.
WILO SE 04/2013
is on.
8.4 Setting description
Float switch for connection to a tank
Set the float switch in order to keep a minimum
water level about 40 cm over the booster inlet
port to be able to resist to the strainer foot-
valve.
Be sure the electric connection is right by activat-
ing the float switch per hand to generate the
lighting of the dry running LED on the control box.
8.5 Start
The maximum operating pressure in the installa-
tion is equal to the pressure at zero flow of the
pumps plus the water supply pressure at booster
inlet if need be.
On the ElectronicControl position the button of
the pumps on "Auto".
The control box now ensures the automatic
operating of the booster.
ATTENTION! Do not let the pump operate with
delivery valve closed beyond some minutes.
9. Maintenance
- No particular maintenance is recommended for
the booster when operating.
- Motor bearings are greased for life-time.
- No maintenance for the mechanical seal when
operating.
- In long period of frost and stop of the pump, it is
recommended to drain the pump by screwing off
the bottom plug.
ATTENTION! Fill in the pump before any new
start.
English
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