Findings: The relay always stay energize getting power from Digital Output I/O card. So sandfilter can’t maintain the backwash sequence. That’s why , we change the DDO module in FCP-1 panel. Now the SF is working normally.

Findings: The relay always stay energize getting power from Digital Output I/O card. So sandfilter can’t maintain the backwash sequence. That’s why , we change the DDO module in FCP-1 panel. Now the SF is working normally.
SL. No. Date WID: TaskDescription Location Manpower Remarks 2 November PWID60: DTW-101 RTU, LIT, PIT, FIT clean check & maintenance. DTW-101 Parvas-AT Ahsanullah-Ele…
Fiber Optical Maintenance Near DTW-103