EN – 24
Electrical connections
Electrical motor is in accordance with major international standards (UL, CSA,
VDE).
All three phase motors (protection level IP 54 - TEFC type) must be protected by
a customer supplied starter consisting of a suitably rated contactor and thermal
overload (see page 27).
In all the cases, the pumps are delivered with its motor connected to the
maximum voltage (see page 26).
Wire the motor according to the line voltage. The connections to be made are shown
on a diagram inside the terminal box or on its lid (see page 25).
Check the direction of rotation of the motor (direction of arrow located on the motor
cover). For this:
– Remove the protective caps on the inlet and exhaust orifices.
– Fit a pressure gauge at the pump inlet
– Switch on the pump for 2 to 3 seconds, than stop the pump
– if the pressure indicated is less than 5.10-1mbar, the direction of rotation is correct.
– if the pressure increases, invert two phases.
Three-phase version
Ensure that the product is connected to an electrical installation:
- in compliance with the local and national safety requirements,
- equipped with electrical protection (fuses, circuit breaker, …) which has a
suitable earth (ground) point, properly connected.
Our products are designed to comply with current EEC regulations. Users
making their own modifications to the product are liable to break its
compliance with these regulations, degrade its EMC (electromagnetic
compatibility) rating, and make it unsafe to use. The manufacturer declines
all liability for the consequences of such operations.
Electric shock hazard.
The voltages and currents in use can induce electric shock.
Isolate and lock out power line to the appliance before maintaining it /or
removing the cover.
Only skilled, authorized people may carry out maintenance work.
If a main isolator is installed by the customer, it must be in compliance
with local regulations, with a minimum amp. interrupting current of
10KAIC.
Check that the electrical wiring of the motor corresponds to the line
voltage, before starting up the pump.
Motor characteristics,
connection, protection
The information below is given as a recommendation.
The user must comply with the electrical standards or recommendations (UL, CSA, VDE)
applicable in the country in which the pump is used.
The use of electrical protection for the pump motor makes it possible to protect:
– The motor: in the event of excess voltage or rotor blocking, the resulting excess
current may destroy the coil and possibly the start-up system (for a single-phase
motor).
– The pump: in the event of a lubrication fault (contaminated oil, presence of particles),
increased resistance will draw excessive motor current.
Direction of rotation
Motor Thermal protection
It is necessary to protect the pump against increase of temperature. The motors are
equipped with a dry contact which gives motor temperature information.
To manage the motor thermic protection, It is the user’s responsibility to wire this dry
contact by connecting the 2 wires available in the terminal box (wiring diagram in the
terminal box – NC dry contact - 250V max. - 0.5 A max.).
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