The manufacturer of the fly ash compressor, Ingersoll Rand came back to reattend the defective compressor. The repaired AN of the compressor was installed back. After the installation the compressor was tested by Research &Engineering (R&E) section, and it was functioning well.
Cleaned the flame scanner cooling air fan filter at unit 1.
Did regular maintenance at service air compressor in unit 1 instrument air house. The regular maintenance is done every 8000 hours of the compressor operation.
Unit 1 burner gun seal air fan bearing replacement. The bearing housing was first cleaned, before new bearing was installed. The defected bearing was identified by R&E section, where they use sound frequency measurement to detect it.
Did alignment at burner gun seal air fan. The equipment used to do the alignment is diel gauge and telescopic gauge. Shim is placed under the motor to align it with the shaft. The maximum displacement between shaft and motor must be less than 0.1mm.
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