Xylem GK GV (8201, 8201X) - Manual (Page 36)

Service item Action
Personnel safety devices Check the guard rails, covers, and other protections.
Rotation direction Check the impeller rotation.
Oil housing Fill with new oil, if necessary.
Terminal block/closed end splice Check that the connections are properly tightened/connected.
Thermal contacts Normally closed circuit; interval 0–1 ohm.
Voltage and amperage Check the running values.
Major overhaul
For a major overhaul, take this action in addition to the tasks listed under Inspection.
Service item Action
Support and main bearing Replace the bearings with new bearings.
Mechanical seal Replace with new seal units.
Service in case of alarm
For information about indication values for sensors, see Sensor connection characteristics
(page 26).
Replace the impeller
WS006089A
Figure 9: C-impeller
WS006090A
Figure 10: D-impeller
Required tools:
• 6 mm hexagon bit adapter with an extension of at least 125 mm (4.92 in.)
• Impeller puller
If applicable, contact your local sales and service representative for correct type and
size.
• Rod (wooden or copper) for locking the impeller in place, if applicable.
• Two crowbars, if applicable
Maintenance
34 GK, GV (8201, 8201X) Installation, Operation, and Maintenance Manual