Tend pumps that maintain level of water in boilers.
What does a Water Tender do?
Tends pumps that maintain level of water in boilers: Reads boiler gauges to ascertain need for water. Opens valves and starts boiler-feed water pumps to supply water, or adjusts controls to start pumps automatically when water level reaches specified point. Observes operation of pumps to detect malfunctions. Tests water to determine suitability for boiler use or obtains sample for laboratory analysis. Adds specified chemical to condition boiler water. May clean boilers. May tend evaporator to purify water.