DG multi - stage boiler feed pump operation and use of emergency precautions

DG multi-stage boiler feed pump suitable for conveying the temperature below 110 ° C water or physical and chemical properties similar to the water-free non-corrosive other liquids, widely used in industrial and mining enterprises and the boiler water supply and urban life water supply. DG-type multi-stage pump is particularly suitable for boiler feed water, can also be widely used in pressure vessel water supply, hot water circulation, high-rise building water supply, farmland irrigation, fire pressurization, hydraulic washing, food, brewing, medicine, chemicals, aquaculture, Environmental protection and other industries.
For the safety of the operator, DG-type horizontal multi-stage boiler feed pump start operation, it should be noted that the boiler feed pump start operation precautions;
      1, DG horizontal multi-stage boiler feed pump operation Note:
        1) Before starting the pump, rotate the rotor and check whether the rotor is flexible.
        2) Check that the motor steering is consistent with the pump steering.
        3) Close the pump outlet valve, the pressure gauge cock, with the delivery of liquid or vacuum system to exclude the suction pipe and the pump body of the air (no empty start running).
        4) Check the pump and motor connection bolts tightness and pump around the security situation, so that the pump is ready to start. Warning: After installing the coupling guard, the device can operate, ignoring the point will cause casualties.
        5) start the pump, until the pump is running normally, open the pressure gauge cocks, slowly open the outlet gate valve, press the outlet pressure gauge reading control pump given the head.
      2, DG horizontal multi-stage boiler feed pump to use Note:
        DG multi-stage boiler feed pump to pump instructions to use the standard, but if the operation of the DG boiler water pump one of the following unusual circumstances must take emergency stop pump:
        1) in the equipment during the operation of a personal accident or a sudden burst of parts of the unit.
        2) Horizontal centrifugal pump pump or bearing high fever over the maximum value.
        3) motor running current, the voltage suddenly rises or falls above the maximum value, or equipment fire, the motor has coke burnt taste and so on.
        4) Steam vaporization in the pump or severe vibration.
        5) The pump is subject to severe friction and impact, or displacement of more than 2-3mm.
        6) with the operation of the horizontal centrifugal pump associated with the process of pipeline and container rupture and other failures.
        The above is the DG type horizontal multi-stage boiler feed pump start operation and the use of precautions, in addition, the pump in operation, do not go beyond the conditions of the pump nameplate operation, so as not to endanger the safety of equipment and operators.

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