Arrived onsite for maintenance for one gas fired steam boiler. Customer mentioned recently installed drain valve is not allowing water to pass through. Requested the customer turn on the thermostats up to heat and confirm operation of the boiler. Turned the boiler off and removed and cleaned all burners and wiped cleaner the burner compartment. Performed a visual inspection of all electrical and inspected all external water components such as automatic water feeder, fill valve, backflow preventer and pressuretrol. Drained the steam boiler of water. Did not observe too much much discoloration. Cleaned the pig tail and the site glass. Removed and cleaned drain valve. Found the drain’s piping clogged. Cleared the drain piping. Flushed the boiler with water. Confirmed water level on site glass is within specification. Confirmed site glass valves are operational and opened. Confirmed the operation of the water feed. Confirmed everything is operating and heating properly at this time.
