Product Manual

CAUTION! ALWAYS FOLLOW THE SAFETY REGULATIONS

The direction of rotation must be checked each time a new installation is carried out.

Proceed as follows:

1. Place the pump on a at surface;

2. Start the pump and stop it immediately;

3. Carefully observe the kick-back on starting, looking at the pump from above. TIf the direction of

rotation is correct, the upper cap will turn counter-clockwise as indicated by the arrows in the

drawing (Fig. 2). .

If it is not possible to check as described above because the pump is already installed, check as fol-

lows:

1. Start the pump and observe the water ow rate.

2. Stop the pump, switch off the power and invert two phases on the supply line.

3. Restart the pump and check the water ow rate again.

4. Stop the pump.

The correct direction of rotation is the one that gives the higher ow rate.

9 START-UP

9.1• Turn the differential magnetothermal switch upstream from the pump to position I (ON)

and wait until the water comes out of the delivery pipe.

• If malfunctions are found, disconnect the pump from the power supply, turning the differential

magnetothermal switch to position 0 (OFF) and consult the chapter on “TROUBLESHOOTING”.

• The pump may be started and stopped:

- Manually by means of the differential magnetothermal switch upstream from the system.

- Automatically when water level rises, for versions with a oat switch.

Fig. 2

8.4 CHECKING THE DIRECTION OF ROTATION (for three-phase motors)

JONTRACT

JONTRACT 180-250-300-400-600

JONTRACT 550-750-1250-1500