Xylem GK GV (8203, 8203X) - Manual (Page 39)

Service item Action
Cable 1. If the outer jacket is damaged, replace the cable.
2. Check that the cables do not have any sharp bends and are not
pinched.
Connection to power Check that the connections are properly tightened.
Electrical cabinets Check that they are clean and dry.
Impeller 1. Check the impeller clearance.
2. Adjust the impeller, if necessary.
Stator housing 1. Drain all liquid, if any.
2. Check the resistance of the leakage sensor.
Normal value approximately 1530 ohms, alarm approximately
330 ohms.
Insulation Use a megger maximum 1000 V.
1. Check that the resistance between the earth (ground) and
phase lead is more than 5 megohms.
2. Conduct a phase-to-phase resistance check.
Junction box Check that it is clean and dry.
Lifting device Check that local safety regulations are followed.
Lifting handle
: Ex-version 1. Check the screws.
2. Check the condition of the lifting handle.
3. Replace if necessary.
Lifting eye bolts: Standard version 1. Check that they are screwed firmly against the base.
2. Check that they are situated on same plane.
3. Check the condition of the lifting eye bolt.
4. Replace if necessary.
O-rings 1. Replace the oil plug O-rings.
2. Replace the O-rings at the entrance or junction cover.
3. Grease the new O-rings.
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 board 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.
Maintenance
GK, GV (8203, 8203X) Installation, Operation, and Maintenance Manual 37