Xylem Heavy-Duty Submersible Mixer SR4670.310

Ensure the following tools are available

Twist off the propeller plug and the O-ring

Loosen the hub screw using an M12 hexagon bit adapter (part no 84 14 79), n=10

Remove the shaft key, handling it by its ends

Check the stator housing for any leakage, and drain if necessary.

Check mechanical seals and O-rings and replace any damaged seals with new ones.

CLS (not for Ex-approved mixers)

Check the oil housing for any leakage.

Check mechanical seals and O-rings and replace any damaged seals with new ones.

Check the coolant level (mixer with cooling jacket).

Check the connections and the electrical motor.

Is the outer jacket of the cable damaged?

Check that the cables do not have any sharp bends and are not pinched.

Check that the connections to power are properly tightened.

Check that the electrical cabinets are clean and dry.

Measure resistance between earth (ground) and phase lead. Should be more than 5 megohms.

Conduct a phase-to-phase resistance check using a megger (max 1000 V).

Check that the junction box is clean and dry.

Verify power is disconnected to prevent unexpected startup

Remove the inspection screw (marked INSP)

Remove the screw inside to access the stator housing

Reinstall the inspection screw (marked INSP)

Disconnect and lock out power before servicing

Inspection and Replacement Tasks

Is the media (liquid) temperature below 40°C (104°F)?

Ensure all replaced components are properly installed