Xylem Heavy-Duty Submersible Mixer SR4670.412

Disconnect and lock out power before servicing

Is the mixer EN/ATEX or FM-approved?

If EN/ATEX or FM-approved, review specific Ex information before proceeding

Ensure the following requirements are met

Inspect the mixer for patina and other signs of wear

Describe any alternative working methods used due to patina

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 filling plug to drain the oil.

Re-position the O-ring and the drain plug after draining the oil.

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

Select the mixer working position and fill the required oil quantity

Fill with new oil through the appropriate hole based on mixer position.

Verify power is disconnected to prevent unexpected startup

Remove the inspection screw (marked INSP)

Remove the screw inside to access the stator housing

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

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