Specifications include, but are not limited to: 1.1 LEVEL 1 Overhaul and Repair. a) Disassemble pump. b) Clean and inspect all parts. c) Install new sleeves, packing/mechanical seals, bearings, wear rings, o-rings and gaskets (as needed) regardless of existing conditions. d) Pump/Motor operations test (test Stator windings with Megohmeter and surge test with report) e) Reassemble and perform Hydrostatic pressure test or full load test as required by type of pump, run amp check and check bearings. f) Prepare and re-paint unit(s) to a “like new” exterior appearance to OEM specifications. g) Perform Vacuum Pressure Impregnation (VPI) on rewound motors five (5) horsepower and above. h) Fasten separate metal tag (screw or rivet) metal plate with the Contractor’s name, address, phone number and date of motor repair next to manufacturer’s dataplate. i) Any repairs required above Level 1: • Parts and labor must be itemized separately for Level 1 repairs • Any repairs above a Level 1 repair must be approved by the County 1.2 LEVEL 2 Overhaul and Repair. a) All pump repairs shall include Level 1 Service and Stator rewind plus: b) Rewind Motor Stator. • The minimum class of insulation shall be class “H” as specified by NEMA. • Most of these motors will be open drip-proof motors. c) Upon completion and before delivery is taken on a motor overhaul or rewind, the motor or stator will be certified as surge comparison tested for winding condition and interrelationship. Include written test results and work orders with delivery ticket. d) Any repairs required above Level 2: • Parts and labor must be itemized separately from the Level 2 repair • Any repairs above a Level 2 repair must be approved by the County 1.3 Submersible Pump Overhaul and Repair. a) Disassemble, clean and inspect all parts. b) Mic and log all wear fit measurements. c) Install new shaft sleeves, mechanical seals (packing lantern rings and packing gland), bearings, stationary (casing) wear rings, casing gaskets, lip seals and snap rings regardless of existing condition. d) Clean, sandblast and apply coal tar or epoxy coating to the upper and lower casings. e) Reassemble rotating assembly in casing. f) Provide suction and discharge flange gaskets. g) Install new piping all pump ancillary lines (i.e. flushing and packing). h) Test run pump and check vibration readings and provide report. 1.4 Other Pump Overhaul and Repair. a) Remove pumps from site and return them to shop. b) Disassemble, clean and inspect all parts. c) Mic and log all wear fit measurements. d) Install new shaft sleeves, mechanical seals (packing lantern rings and packing gland for fire pumps), bearings, stationary (casing) wear rings, casing gaskets, lip seals, snap rings regardless of existing condition. e) Clean, sandblast and paint upper and lower casing. f) Reassemble rotating assembly and dynamically balance. g) Reassemble rotating assembly in casing. h) Provide suction and discharge flange gaskets. i) Install new piping for flush lines. j) Reinstall pump on-site and laser align. k) Run test pump and check vibration readings with reports. l) Submit reports on laser alignment and vibration readings.
