Xylem Heavy-Duty Submersible Mixer SR4630.31

Replace the cable if the outer jacket is damaged.

Check that the connections to power are properly tightened.

Ensure electrical cabinets are clean and dry.

Measure resistance between earth (ground) and phase lead (should be > 5 megohms).

Conduct a phase-to-phase resistance check.

Ensure the junction box is clean and dry.

Remove the inspection screw (marked INSP)

Remove the screw inside to access the stator housing

Check for any visible damage or wear

Ensure all components are securely fastened

Disconnect and lock out power before servicing

Inspection and Replacement Tasks

Inspect and replace key components

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).

Determine the required oil quantity based on mixer position

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

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.