WEG W22Xdb - Page 7

Flameproof motors | 7
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MOTORS WITH INTERNAL BEARING TEMPERATURE PROBES ........................................... 52
8.5.1. STANDARD SOLUTION ............................................................................................................... 52
8.5.2. OPTIONAL SOLUTION ................................................................................................................. 52
POWER TERMINAL BOX ROTATION PROCEDURE ................................................................ 53
TIGHTENING TORQUE FOR FLAMEPROOF ENCLOSURES BOLTS ..................................... 55
SPARE PARTS ............................................................................................................................ 55
9. MAINTENANCE PLAN ......................................................................................................................... 55
10. MOTOR ABNORMALITIES IN SERVICE............................................................................................. 58
COMMOM DAMAGE TO INDUCTION MOTORS ............................................................. 58
10.1.1. SHORT CIRCUIT AMONG TURNS............................................................................................. 58
10.1.2. DAMAGE CAUSED TO THE WINDING ...................................................................................... 58
10.1.2.1 ONE PHASE OF THE BURNT WINDING ...................................................................... 58
10.1.2.2 TWO PHASES OF THE BURNT WINDING ................................................................... 58
10.1.2.3 THREE PHASES OF THE BURNT WINDING ............................................................... 58
10.1.3. DAMAGE TO THE BEARINGS ................................................................................................... 59
10.1.4. SHAFT RUPTURE ...................................................................................................................... 59
10.1.5. DAMAGE DUE TO BADLY ADAPTED TRANSMISSION PARTS OR DEFECTIVE ALIGNMENT
OF THE MOTORS ...................................................................................................................................... 59
TROUBLESHOOTING CHART ......................................................................................... 60
TROUBLESHOOTING CHART ABOUT BEARINGS ........................................................ 62
11. WARRANTY TERMS ............................................................................................................................ 63
LIABILITY ........................................................................................................................... 63