Boiler feed pump maintenance manual

 · NOTE: Triad highly recommends that boiler feed water be treated before it enters the boiler. The water in the boiler should have a pH level of between and , and in no case above If feed water temperature is below °F it also requires an oxygen scavenger. See WATER in Section III of this boiler manual. feed pump is not pumping enough water, may use excessive steam. d) If the check valve on the feed water line kept dirt, then water will escape back. Clean it. e) Safety valve has set in and boiler not functioning. Processing valve pressure adjustment is higher then safety valve pressure adjustment. Adjust it. f) Flue gas exit temperature has risen. the pump starts. Then the boiler low-water cutoff will operate unnecessarily, or if there is a boiler-feed device it will supply make-up water unnecessarily and the heating system will become water-logged. If the lower (OFF) position of the float switch is too low, the pump may continue running until it loses its prime.

Shutdown of the pump (1) Close discharge valve (2) Switch off the driver and observe the pump run down smoothly to a standstill. The pump rotor should not stop with a sudden jerk. (3) Switch off the oil pump. (4) The suction valve should remain open unless the pump is being taken out of service for prolonged period and is being drained. feed pump is not pumping enough water, may use excessive steam. d) If the check valve on the feed water line kept dirt, then water will escape back. Clean it. e) Safety valve has set in and boiler not functioning. Processing valve pressure adjustment is higher then safety valve pressure adjustment. Adjust it. f) Flue gas exit temperature has risen. 1. Refer to the pump manufacturer’s instruction manual for detailed maintenance procedures. Generally, the only maintenance work required is occasional bearing lubrication or seal replacement. For more extensive repairs, pump replacement may be required. In some cases, service exchange pumps are available from the pump manufacturer.

13 Pump and Motor Assembly. 14 Heating Coil. 20 Water Inlet, Pump. 24 Feedwater Pressure Gauge. 25 Maintenance Drain Valve. 26 Coil Feedwater Valve. Introductory Power Plant Operation Training Course Boiler Feed Water Pump. Position Thrust Bearing Clearance (are described at Maintenance manual); These two types only differ in the construction of their pressure-retaining enclosure, which influences the manufacturing costs and ease of installation. There.