Low Water Cutoff Switch Testing — Georgetown TX
The low-water cutoff (LWCO) is the boiler's most critical safety device — it shuts the burner off if the water level drops dangerously low, preventing catastrophic damage. Testing and cleaning the LWCO is an essential part of every boiler service.
A LWCO that fails in the 'on' position allows the boiler to fire with dangerously low water — potentially destroying the heat exchanger and creating a safety hazard. Georgetown's hard water accelerates scale buildup on float-type LWCOs. Annual testing and cleaning is essential.
What's Included
We perform a manual low-water test to verify the LWCO shuts the burner off at the correct water level.
For float-type LWCOs, we clean the float chamber of scale deposits that can cause sticking.
For probe-type LWCOs, we clean the probe and test its resistance characteristics.
If the LWCO fails testing, we replace it with the correct type for your boiler.
We document the test results for your maintenance records.