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CSX' OF SANTA ANA
<br />RFP NO,: 16-090
<br />WATER WELL, PUMP AND MOTOR REPAIR SERVICES
<br />2, When needed,, the interiors of motor frames and parts shall be painted with an Insulating paint, This
<br />InoNdes rotors, bf arittg brackets,, frame interiors and air deflectors. Windings shall (rot be painted.,
<br />J. .Inctdantals
<br />1, in. the event that the motor is in poor condition and cannot be repa.lred, reconditioned or made as
<br />new, the Contractor shall notify the Engineer Immediately,
<br />2. All Incidental parts requiring replacement, such asbearings, colts, eta, shall be considered included,
<br />in other Items of bid and no additional compensation shall be allowed.
<br />7. REWINDING OF ELECTRIC MOTORS
<br />When rewinding Is done In conjunction with a recondition or repair, many of the items below will be
<br />redundant and shall not be performed or charged for twice. The items below apply to stator only (including
<br />all labor, materials and testing necessary for worlq completion) and shall at a minimum include:
<br />a, Pre-Oleassembiy Test
<br />1. Using a 1000 megohm meter,conduct verification for insulation integrity. A'cceptabie oriteria is 1.6
<br />meg-6hrns or higher,
<br />2. A 5KV meg-ohm meter shall be used to verify Insulation Integrity of all 41 RV motors.
<br />3. Verify that heaters are operational and other attached features such as thermocouples have
<br />continuity;
<br />4, Pre -disassembly dOOLimentation shall include the condition of mechanical fits (i.e. shaft run out),
<br />cracked, broken or missing parts, test run at full voltage, current readings, meg reading and surge
<br />comparison test as, rooeived, The Engineer shalt be notified if ecoeptable criteria are not met.
<br />b, Stripping
<br />1, Wind'fagoshall be torrioV64 by burno_uj With oven temperature suppressIon.
<br />Burn -.out Lemperature shall not exceed 760 degrees. Fahrenheit,
<br />z Windings shall be. removed in such a fashion not to damage or.diplort the core iron., Upon removal
<br />of the bid windings and inbutatioh, the core shall be'thordughly cleaned and inspected, for burro, etc.
<br />3. After the burnout procedure, the Contractor shall perform a stator core loss test to ensure the stator
<br />laminatior,s:are not,heak damaged,. If the .stator core losses. excr ad four (4) Watts per pound of Gare
<br />steel, notify the Engineer prior to proceadi rig. forward,
<br />c. Winding
<br />1, General: Rewound motors shall meet or exceed,all Q,E.M. operating characteristics, unless
<br />otherwise specified by the Englader, NEMA Class F Insulation shall be, used,unless otherwise
<br />specified. Magnet wire shall be.a Quad Build, insulated wire of domestic manufacture that meets or
<br />exceeds NEMA specification MW -36A, After winding and prior to resin treatment, windings will
<br />be surge -comparison tested and the results documented,
<br />2. The copper cross-sectional area shall be at least as large as the orlginal winding,
<br />3. Resin Treatment: Windings shall be double -dipped with Class H varnish and baked,
<br />4, Check all coilsfor ovorall ocll shape. Perform a high frequency turn -to -turn dielectric test (surge
<br />Lost) in acoordance with ICEE 522. Submit test results to the City, This shall be done. prior to
<br />Installation Into the stator.
<br />d. Motor Leads, Motor lead's that are replaced must be the same length and configuration as the original
<br />leads; Leads will be permanently tagged with.non-magnetic; markers. Lead lengths shall be identified
<br />by the City when a request for service is made,
<br />25C-37
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