From initial site visit, to complete in-house workshop repair and return to site for commissioning, TDC have the
internal resources to inspect, repair and maximise your pumps' performance and efficiency. These images show Submersible Pump Repair and Refurbishments, which were carried out in detail by our mechanical engineering team.
Initial Work-scope
Pump was isolated electrically, disconnected mechanically then lifted and removed from site back to TDC Mechanical Workshop
The unit was then meticulously photographed with all visible damage reported
The data plate was noted to be missing from the pump
The lifting bracket was noted to be damaged and to be repaired, securing fasteners and bushes also noted to be replaced
Assess general condition of unit - Noted the Impeller was badly damaged, with sections of the impeller partially missing
The pump body had surface corrosion with heavy pitting marks which required blasting and re-coating
Electrical IR Megger checks carried out and results recorded
Mark all adjacent points for orientation
Removed top cable entry cover; water ingress found inside housing
Top pump bearing housing was to be replaced as this part was noted to be cracked
Hydraulic oil drained off; this was found to be contaminated with water
Strip pump for inspection
Stator windings found to be contaminated with oil & water; required high-temp steam & stove
Rotor bearing and mechanical seal journals dimensionally checked
Rotor concentrically checked
Volute housing found to be worn and damaged on flange
Pump main housing was worn and holed inside bottom of Volute
Cleaned all parts and thoroughly inspected for further wear or damage
Bearings found to be damaged
Fully inspect end plates and bearing housings for wear or damage
Wear rings to be checked for any ovality
Cable entry flanges corroded and required to be changed out
Compiled full inspection report listing parts required
OEM spares including P&D
Findings and Refurbishment Work-scope
Bearings damaged - to be replaced with new
Mechanical seals damaged - to be replaced with new
Steam & stove Stator due to windings being contaminated
Replace impeller with new
Replace wear rings with new
Replace Bellmouth housing with new
Machine Rotor shaft sealing journals
Replace all O rings and fasteners with new
Dynamically Balance Rotor
Rebuild pump using new fasteners
Blast & prime pump approved 2 coat paint spec. On final assembly, apply final top coat finish on completion of rebuild
Replace cable entry flanges and seals
Refill oil chamber with new food lube oil
Carry out static pressure test & electrical run up test
Fully submerge pump in water tank. After 24 hrs, remove pump and IR Megger check
Prepare pump for dispatch
To find out more about the full range of electrical & mechanical engineering services available at TDC, please have a read through the website, or contact TDC’s Mechanical Engineering Team at info@TDCaberdeen.co.uk or call +44 (0) 1224 710077710077.
