salmson CXL 2025 Instrucciones De Montaje Y Pusta En Servicio página 7

ENGLISH
Power supply network
• Single-phase, 230 V: three-conductor cable connected to
the L, N + Earth terminals of the circulator (see FIG. 4).
• Three-phase, 230 or 400 V: four-conductor cable; connect
the three phases L1, L2, L3 + Earth to the terminal strip (see
FIG. 5).
The power cable must not touch the pipe or the
pump; make sure that it is away from any moisture.
The single-phase circulator is self-protected by impedance,
and needs no external protection. It must be connected to
the network via a switch having an opening distance, on
each pole, of at least 3 mm. The power outlet must have an
earthing contact.
The three-phase circulator must be connected to a motor
protection safety switch (wire as shown by the diagram
supplied with the safety switch).
After making the connections, put the cover back on the
terminal box.
5.4. Choice of speed
•SINGLE-PHASE motor: by three-position manual selector
switch (see FIG. 2).
•THREE-PHASE motor: by terminal strips (see FIG. 5).
Any error in the voltage would damage the motors.
6. STARTING UP
6.1. Filling, degassing
Never operate the circulator WITHOUT WATER.
- Open the valves on both sides of the circulator and fill the
installation completely.
- Bleed the circuit at the high point.
- Bleed air from the circuit by hand by unscrewing the plug
(see FIG. 6) a few turns; close it when water runs out and
there are no more air bubbles.
6.2. Check of direction of rotation (three-phase motor)
The correct direction of rotation is indicated on the pump
data plate.
Switch the circulator on and check the direction.
•To change it, reverse two phase wires on the motor
terminal block.
The circulator flowrate is adjusted by changing the motor
speed (see 5.4).
Risk of burning. In operation, the motor
ATTENTION !
casing may be hotter than 100°C.
7. SERVICING
The circulator needs no special servicing in operation.
The motor bushings are self-lubricating.
At the beginning of each heating season, or after a
prolonged shutdown, make sure that the circulator turns
freely.
8. OPERATING TROUBLE
CAUSES AND REMEDIES
Switch the circulator OFF before doing any
ATTENTION !
work on it.
8.1. The circulator is noisy
a) Air in circulator
- Bleed the circulator: loosen the rear plug; continue until
there are no more air bubbles, then screw the plug back in
(see FIG. 6).
b) The suction pressure is too low
- Raise the pressure in the circuit.
c) Foreign bodies in impeller
- Remove the motor and clean the impeller.
8.2. The circulator fails to start
a) Shaft stalled by fouling after a prolonged shutdown
- Free the shaft: remove the rear plug. Use a flat-bladed
screwdriver to turn the motor shaft. Then reinsert the rear
plug (see FIG. 5).
b) No power supply to circulator
- Check that the motor is connected.
- Check the fuses of the installation.
c) Capacitor defective (single-phase motor)
- Replace it; the characteristics are indicated on the rear
data plate (µFV).
d) The motor is out of order
- Remove it and replace it with a motor unit of the same
type (characteristics marked on data plate).
e) Foreign bodies in impeller
- Remove the motor and clean the impeller.
8.3. Performance is inadequate
a) Motor turns the wrong way (three-phase motor only)
- Remove the plug and check that the direction of rotation
of the motor matches the direction indicated by the arrow
on the data plate; if necessary, interchange two phase
wires on the power supply terminal block.
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