A professional who tends pumps that maintain level of water in boilers. Respnsibilities include:

• 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.