I. Partial overhaul
1.overhaul of water pump control device, copper sleeve and oil jacket.
2. Overhaul of guide bearing of water pump. Overhaul wear condition and water leakage of water pump and keep a record.
3. Overhaul and test the thermometer, instrument and relay protector.
4. Overhaul of bearing clearance. Maintain bearing clearance according to the temperature of the thermometer at operation.
5. Overhaul of brake part.
6. Overhaul of fasteners of unit, such as foundation bolt and stop bolt.
7. Overhaul cavitation and wear conditions of impeller, blade and impeller shell and keep a record.
8. Measure clearance between blade and impeller shell.
II. Unit overhaul
It means that dismount the unit to change damaged parts and parts that need regular replacement, adjust each clearance, clean unit, etc.
III. Extended overhaul
Unit axis deviation and vertical concentricity change caused by subsidence of the foundation or unit performance degradation caused by serious wear of spare parts, the pump station must take extended overhaul.
Manufacturers recommend: Shenlong stainless steel submersible pump
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