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centrifugal pump is cheaper than reciprocating pump the size of centrifugal pump with same capacity is smaller than that of reciprocatingpump centrifugal pump makes maintenance easier than reciprocating pump does all of the above
the main S.Wpump ballast pump air-conditioning water pump the main S.Wpump or ballast pumps that have the biggest output
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motor overload will open relief valve will open pump will overheat motor will overheat
a transfer pump a bilge pump a service pump a vacuum pump
suction side of a bilge pump exhaust manifold of an auxiliary diesel discharge line from an air compressor chemical feed tank of an evaporator
the filter is clogged bilge suction value is clogged suction value and discharge value of the pump do not open fully screw pump is worn seriously and volumetric efficiency is decreased
Send the wiper into the well with only a scoop and pail Remove the bilge manifold valve and attempt to back flush the line Simultaneously operate all available bilge pumps It is only necessary to transfer half the contents of a drum of degreaser into thebilge well
excessive water in the bilges a clogged suction strainer oil in the bilges All of the above
the circuit breaker for leaks in the suction piping relief valve .is not properly seated the suction strainer
failure of the proper operation of emergency generator insulation of piping including exhaust pipes in engine room contaminated by oil improper operation of bilge of bilge of bilge pumping arrangements damaged sanitary pump
motor overload would open relief valve would open pump would eventually overheat motor would overheat
must connect the bilge well suction directly should not pump out the water accumulated in the cargos should not used for emergency drainage in case of ship collision should connect to the fire fighting system directly
the sensor of low oil level is fully covered by sludge the coarse strainer before the pump in suction system is clogged the screw pump is worn seriously and volumetric efficiency is decreased bilge suction value is clogged
main switchboard engine room bilge breathing compartment electric fresh water transfer pump
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stop-check valves installed in the bilge manifolds using a positive displacement reciprocating bilge pump installing eductors in all bilge rose boxes installing a swing check before each bilge valve
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Open the bilge pump for inspection Remove each of the manifold valves Remove only the manifold valve to the affected bilge-well Attempt to pump out another bilge well to determine if the entire system is affected
primarily to lubricate the shaft seals due to the inability of this type of pump to lift water to cover the suction （eye）of the impeller to initially unload the pump by having its head pressure equal to discharge pressure in order to overcome the potential energy of water in the discharge line
湘公网安备 43130202000226号