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Quality Bulletin on Fan Noise Issue in FF Models: Root Cause and Resolution Analysis

This bulletin addresses fan noise and cooling issues in FF models, providing analysis on root causes like motor misalignment in transportation. It details the improvements made, including adding a rubber washer to eliminate play.

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Quality Bulletin on Fan Noise Issue in FF Models: Root Cause and Resolution Analysis

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  1. Quality Bulletin A.D.pandey O.P..Singh Naresh Pant Horizontal deployment Running model New model Re-FPA New part approval Prepared CKD App Model S/No. Product Claim section Claim date Date of imp Kas/Ref05/ 13/45 All FF Model Continuous 29thMay13 REF Field issue Quality issue Cause Implemented serial No • Fan noise.No cooling issue in FF due to fan blade touch with frame caused movement stuck , 3 star models, All FF Model ( 3 star) Analysis Why? Play in motor Fan Motor and clamp fixing l Why? In Transportation , Fan blade motor position misalign in some pcs, due to heavy jerk caused fan stuck/noise • Videocon/Kelvinator • 29th May’13 onwards Before QA System Improved QA System References PATD / ICTS / Test Std. / IG control no. • Improvement in System One rubber washer added between motor and clamp aasy to eliminate play ECN No. JIR control no. Others ( Refer test Report of PATD. & BOm change )

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