Installation; Electrical Connections - FLOWTECH flowboost K.H Operation And Maintenance Manual

8
Other uses
The liquid to be pumped has a viscosity or density higher than that of the water (it will be necessary to use a
motor with a proportionally greater power)
The water to be pumped is chemically treated (softened, chlorinated, purified, etc.)
Any situation other than those listed under permitted use occurs.

Installation

The appliance must be installed in accordance with the instructions in this manual. The appliance and
terminals of the power supply cable must be protected against water, humidity and atmospheric agents.
Check the protection rating (IP) indicated on the motor rating plate. Install in a location not subject to flooding.
Before starting work on the machine, make sure that it has been disconnected from the power supply
network and that it cannot be accidentally reconnected.
If required in relation to the conditions of use and the working environment, we suggest installing adequate
devices to immediately perform an emergency stop of the machine.

Electrical connections

The connections must be exclusively performed by expert, authorised personnel and in compliance with legal
obligations, current regulations, consolidated technical practices and the following provisions.
The appliance is designed exclusively for fixed applications (the power cable cannot be disconnected and
reconnected by the user).
Use electric cables and eyelets of the type and section indicated. Always connect the earthing conductor
to the point required inside the terminal box, keeping it longer than the other conductors. Once wiring is
complete, remove the sponge under the terminal block.
The cable terminals must be connected in an electrical panel with at least an IP55 protection rating, equipped
with cable mechanical fixing systems independent of electrical terminals, and an overvoltage category III
omni-polar cut-out switch preventing the panel from being opened when the appliance is live. The cable
must be protected from excessively high or low temperatures, open flames and chemical agents.
Make sure the rating plate details match the rated voltage and frequency values. Always connect the earthing
cable to the electric pump and check the earthing circuit effectiveness before the first start-up and then
every month.
The installer is responsible for making connections in accordance with the regulations in force in the country
of installation.
The appliance must be powered by a residual current device, with residual operating current of no more than
30 mA. Check its functionality before commissioning.
It is recommended to protect the electric pump from dry running by means of a device such as a float, a level
sensor or a normally open pressure switch connected to the suction line (if the latter is pressurised).
Single-phase versions
Power the electric pump by means of a cut-off device, in accordance with the installation requirements. The
direction of rotation of the electric pumps does not require any checks.
The single-phase electric pumps are fitted with automatic reset thermal protection integrated in the motor.