Clean up area motor and filter motor. Measure vibration-noise-temperature of FS and LS. Add grease motor 15 times and 25 times of FS and LS to make vibration below 4 mm/s and noise below 2 gE. Check at ER4 and ER3 for RPM-KW-Voltage-Ampere-Temperature and write at data check sheet note fan of south side 443 FN1 not working make notification ( AGUS & ADI )