Xylem Heavy-Duty Submersible Mixer SR4650.592

Disconnect and lock out power before servicing

Check that all the parts are in place

Replace the support bearing with a new bearing

Replace the main bearing with a new bearing

Replace the mechanical seal with new seal units

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

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.

Ensure the vessel can hold less than 2 L (2.1 qt) of oil.

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 a torque of 10-20 Nm (7.4-14.8 ft-lbs).

Determine the required oil quantity based on mixer position

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.

Check that the junction box is clean and dry.

Disconnect and lock out power before servicing

Ensure only certified electricians and Xylem-authorized mechanics perform maintenance on EN/ATEX or FM-approved mixers

Verify the following requirements are met

Perform general inspection of the mixer

Control and replace wear parts as necessary

Inspect and control zinc-anodes