As many business operations were idled during the pandemic, it may be an especially important time to inspect a boiler’s external piping that feeds the water level indicators and low-water devices.
Restrictions or contamination may develop over time in the water piping that is connecting a gage glass, water column, low-water fuel cutout, or remote level indicator. If a restriction becomes significant, it will result in a false level indication or potentially trapped level in the externally mounted instrument.