Xylem e-XC, Instruction Manual

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e) Slide the remaining two fastener clips [4] around the overlapping flanges of the
outer [2] and inner [1] guard assemblies. Thread a hex bolt through the clip [4] to
secure it in place.
f) Fasten the two hex bolts [6] located on top of the outer guard assembly [2] into the
holes located on the inner guard assembly [1].
Figure 40: Coupling guard assembly diagram
6.7 Change the rotation
WARNING:
• Always disconnect and lock out power before servicing to prevent unexpected startup.
Failure to do so could result in death or serious injury.
• Electrical connections must be made by certified electricians in compliance with all
international, national, state, and local rules.
• Never operate a pump without a properly installed coupling guard. Personal injury will
occur if you run the pump without a coupling guard.
1. Remove the pump from the base.
2. Follow the Disassembly procedures applicable to the pump.
You only need to remove one of the bearing glands (bearing caps), bearing housings,
and seal bodies (stuffing boxes) in order to change the rotation.
3. Press the press-fitted impeller off of the shaft.
4. Observe the direction in which the vane tips are pointing (see
Figure 41: Impeller
rotation orientation diagram viewed from drive end on page 99).
5. Turn the impeller 180° and press it back onto the shaft.
6. Check that the vane tips point in opposite directions.
7. Reinstall the rotating assembly.
Refer to Pump assembly for pumps with drop-in stuffing box and sleeve over shaft (dry
shaft) design on page 65 for instructions regarding reinstallation.
8. Check the impeller-to-volute relationship.
9. Complete the reassembly.
6 Maintenance
98 e-XC INSTRUCTION MANUAL