Xylem Heavy-Duty Submersible Mixer SR4630.412

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.

Lay the mixer on two supports or suspend the mixer horizontally from an overhead crane.

Place a vessel under the mixer to hold the oil being drained.

Remove the drain plug and the filling plug to facilitate oil drainage.

Re-position the O-ring and the drain plug after oil has been drained.

Tighten the drain plug to the specified torque (10-20 Nm or 7.4-14.8 ft-lbs).

Select the mixer working position for oil quantity

Fill with new oil through the oil filling hole with the mixer in a horizontal position.

Disconnect and lock out power before servicing

Is the mixer EN/ATEX or FM-approved?

If EN/ATEX or FM-approved, see specific Ex information before taking any further actions

Check that the following requirements are met

Make a check up by an authorized Xylem service representative

Based on the result and findings, determine the intervals for periodical inspection and major overhaul for the specific installation

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

Disconnect and lock out power before servicing

Is the mixer EN/ATEX or FM-approved?

If EN/ATEX or FM-approved, ensure only certified electricians and Xylem-authorized mechanics perform maintenance

Ensure the following requirements are met

Perform general inspection of the mixer

Control and replace wear parts as necessary