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    A common fault, the use of fire pump

    1.no liquid, liquid supply inadequate or insufficient pressure

    2.pump running for a while then stop

    3.the fire pump power consumption is too big

    The vibration occurred in two, operation

    1.instability line support, pump base, or anchor bolts loosening caused by vibration are common causes, the various fastening bolts must be, to avoid loosening.

   2.the liquid gas, carefully check the pump and the water inlet pipe of the sealing surface connection has loose bolts, gasket is damaged, the pump and piping system has not damaged parts.

   3.different pump and motor shaft heart, should be adjusted, with a belt rotation, the rotating belt too loose or bad connections, will cause vibration. Water pump impeller imbalance in the operation of the impeller wear or individual impeller channel congestion cause vibration, sometimes due to bad impeller axis bending work out of balance caused by vibration.

    Three.during the operation noise

    1 bearing noise: the sound source bearing installation site, generally resist with an iron bar or screwdriver bearing installation site, listen, to squelch the sound.

    Electrical noise: general is the wailing sound, only the replacement of the motor.

Cavitation noise: the sound source in the pump cavity, crackling snap. Electric hot wall, might exceed the current operation, can close the outlet valve, adjusting to the rated current run, also may be the quality of the motor coil, it can replace the motor.

    The 2 moment of friction parts, frictional resistance increased, but also make possible electric current ultra - hot to be down to check whether the flexible rotor.

    Motor bearing fever, probably bearingor damaged, repair or replacement of bearings required.