INSTRUCTION FOR THE USE AND MAINTENANCE - LIBELLULA 1/3” SERIES - Vers. 1/16
11
INSTRUCTION FOR THE USE AND MAINTENANCE - LIBELLULA 1/3" SERIES –vers. 01/16
11
Do not use the power supply cable of the pump to lift it or transport it.
It is advised to install a differential switch with high sensitivity as additional protection against electric shocks in
case of insufficient earthing.
In the three-‐phase version, connect the earth wire (yellow-‐green) of the power supply cable to the earthing
system of the power supply network.
The installer has the responsibility of assuring that the earth system of the power supply network is in
accordance with Standards.
In the three-‐phase version, connect the pump to the feeder using a magneto thermal motor protector or a
contactor with thermal relay.
Every time the pump with a three-‐phase engine is connected to a different feeder, there are equal
opportunities it turns in one direction or the other.
The incorrect rotation direction causes a significant reduction of the flow rate and an incorrect functioning of
the reducer.
The correct rotation direction is that indicated with an arrow on the reducer body.
If the engine does not turn in the right direction, invert the two phases between them after having
disconnected the line.
13. BEFORE START-UP
Read the instructions and the safety standards of the engines coupled with the pump unit supplied and
rigorously comply with the dispositions of the manufacturer of the same engine.
With regard to the Libellula 1/3" pump unit, before start-‐up fill the carter of the reducer oil up to the notch of
the filling plug rod.
Consult the following table for the amount and brand of the oil to be used.
LIBELLULA 1/3"
REDUCER OIL QUANTITY (Viscosity ISO150)
Pressed aluminium version = L. 0,65
Cast iron helical version = L. 0,75
BRAND
TYPE
Shell
Omala 150
BP
Energol GR-XP150
Esso
Spartan EP 150
Mobil oil
Mobilgear 600 XP150
Agip
Blasia 150
Lubricating the gears happens automatically for splashing inside the reducer carter.
