When the double suction pump runs for 3000 hours, the pump needs to be maintained in two stages. At this time, it should contact the relevant posts and stop the pump according to the standardized operation. Now let's look at the details.
First, close the exit inlet valve side by side, pull the brake with insulating gloves, hang the warning board, hang the shutdown card, open the wire plug, exhaust pressure relief, (movable plate and dirty oil basin). First, hot water should be replaced for the oil pump, the motor foot bolt and grounding wire should be removed, and the wheel cover bolt should be shifted 90 degrees to facilitate the direction of work. The puller pulls out the opposite wheel, removes the rubber pad of the opposite wheel, and removes the construction with a flat shovel.
Maintain the back end of the double suction pump first. Remove the condensate pipe joint, mark the end cap well, unload the end cap bolt, pay attention not to scratch the thread, unload the bearing end cap with copper rod, place the sealing face upward, remove the old gasket, clean the sealing surface, unload the bearing frame bolt, pay attention not to scratch the thread. Remove the bearing rack (top wire) with professional tools. The puller, copper rod), unload the bearing Som with the hook wrench, unload the bearing with the puller, remove the bearing inner rail along the axis, remove the bearing inner cover along the axis, rotate the pump shaft to remove the water damage along the axis, unload the packing cover nut, gently remove the packing cover along the axis, and use the packing hook to remove the old packing along the packing incision, pay attention not to scratch. Shaft sleeve and stuffing box, unload balance pipe wire plug and balance pipe, unload pump tail cover along the axis, take out water seal ring and remaining old stuffing, rotate pump shaft to take off the sleeve, do not damage the sleeve and key slightly, remove balance plate with top wire or puller, and kick out the key with flat shovel.