Maintenance / Service - Wilo TOP-S Instrucciones De Instalación Y Funcionamiento

WARNING!
Depending on the fluid temperature and the system pressure, if the vent screw is
completely loosened hot liquid or vapour can escape or even shoot out at high
pressure.
Place a container under the back of the pump to catch any water that may run out.
x
Protect all electrical parts against the leaking water.
x
Carefully loosen the vent plug with a suitable screwdriver, continue until water appears, but do
x
not remove.
After 30 sec. re-tighten the plug.
x
Re-open isolating valve.
x
Turn the power back on.
x
CAUTION!
Due to the internal pressure imbalance caused during the manual venting process it
x
is possible that the pump becomes somewhat noisy. This noise should disappear
once the air vent screw has been retightened and the internal pressure re-balances.
The required inlet pressure must be obtained at the pump suction side.
x
8.2 Setting
WARNING!
Never make any connections in the pump terminal box unless the electrical supply
has been disconnected.
Rotation check for 3 ~ (Fig. 5):
x
The right direction of rotation will be indicated by a LED in the terminal box (Fig. 5,Pos 3). This
LED is not lit when the direction of rotation is correct. If the direction of rotation is incorrect,
the LED will show red. To check the direction of rotation briefly connect the pump. In case the
direction of rotation is incorrect, proceed as follows:
Disconnect the power supply.
x
Interchange two phases( L1,L2 or L2,L3 or L1,L3) inside the terminal box.
x
Restart the pump.
x
Speed setting for 3 ~ pump (Fig.5 ) and 1 ~ pump (Fig. 6)
x
Loosen the four terminal box screws and remove the screws and cover. Ensure the power is dis -
connected before removing the connector (Fig. 5/6, Pos. 1). Replace the speed selection con-
nector by removing - rotating 180 degrees - plugging to the desired speed MAX or MIN.
The speed setting can be read (MAX or MIN) through a window when the terminal box cover
is closed (Fig.1b, Pos.1).
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Maintenance / Service

All servicing should be performed by an authorized service representative!
WARNING!
Dangers caused by electrical energy must be excluded.
All electrical work must be performed after the electrical supply has been discon-
nected and secured against unauthorized switching.
WARNING!
At high water temperatures and system pressure close isolating valves before and
after the pump.
First allow pump to cool down.
These pumps are maintenance-free, self-lubricated by the system fluid and have no seals to leak
or couplings to break.
Risk of scalding
Possible damage of the pump
Electrical shock hazard
Electrical shock hazard
Risk of scalding
ENGLISH
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