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An after-hours boiler-pump failure, repaired and verified.
A failed bearing seal was spraying water in a strata mechanical room. The system was safely isolated, the damaged pump components were replaced, and the boiler circulation was returned to service.
Stop the leak first. Then define the repair.
Water was reaching the mechanical-room floor and below. The crew traced the failure to the circulation-pump bearing assembly, then isolated the boiler, pump power, and affected piping to stop the leak and protect the surrounding equipment.
Inspection confirmed excessive shaft play and a failed bearing seal. A seized impeller added complexity, so replacement parts had to be sourced before the pump could be rebuilt. Exact property and customer details are intentionally protected.
A controlled response from isolation to verified restart.
Trace and isolate
Identify the failed pump assembly, isolate the affected piping, and shut down the boiler and pump safely.Inspect the failure
Open the assembly, confirm the bearing and impeller condition, and define the parts required for a reliable repair.Source and rebuild
Obtain the replacement bearing assembly and impeller, clean the gasket surface, then reassemble the pump with a new gasket.Pressurize and monitor
Refill the system, inspect for leaks, return the boiler and pump to service, and monitor operating temperatures.The pump restarted leak-free and the system returned to operation.
After reassembly, the system was refilled and pressurized. The pump was checked with no leaks observed, then the boiler and circulation pump were returned to service and monitored as temperatures recovered.
Failed bearing seal and worn assembly identified
Replacement bearing assembly and impeller installed
System refilled, pressurized, and checked for leaks
Boiler circulation restored and monitored under operation
Start with the problem. We will help plan the next step.
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