Clean up area motor and filter motor from dirty of dust use instrument air Measure vibration-noise-temperature of FS and LS add grease motor for FS and LS 30 times and 25 times make vibration below 4 mm/s and noise below 2 gE. Check at ER5 and ER4 for data RPM-Voltage-Ampere-KW-Temperature motor and fill in at check sheet ( MUHAIMIN & DADANG )