XBD fire pump common fault analysis and processing

In the process of using the XBD fire pump will appear a few small problems, sometimes we are in the process of using can completely avoid these problems, this paper sort the XBD fire pump common fault analysis and processing methods.

1, XBD fire pump motor overheating:

for fire pump adopt to fire pump motor as the power, the most common fault is overheating. The main reason is that the voltage is high or low, drive not free, ventilation system fault, fault of motor overheating. Phenomenon: serious overheating insulation when they burn out, rotor broken bar.

first inspection on power supply system, motor overheating by restoring stable power supply solution. Transmission can cause motor overheating, due to the motor and transmission restricted between fire pump motor load is too large, a small horse-drawn cart, motor overload with elevated temperature. Common poor transmission mainly due to the transmission system of rotating bearing oil shortage, bearing damage, etc. , find out the fault point replace or lubrication.

motor overheating caused by ventilation system failure, mainly due to the damage of fan, vent plug and bearing wear and so on make the ventilation system of cannot complete the work, find out the cause of the problem, unobstructed airway, fan for repair, replacement of bearings.

2, XBD fire pump, pump body overheating:

common cause is caused by bearing friction caused by, or caused by lack of oil, oil lubrication system is bad.

first check whether the lubrication system is short of oil or lubricating oil containing impurities, etc. , the second is whether screening bearing damage. For just repair the pump body of overheating should also check the rolling bearing or bracket cover whether the gap is too small. After the check is overheating will need to check whether the pump shaft bending or two different axis. Check the balance of impeller at the same time, the adjustment pump shaft or two shaft concentricity, remove the impeller holes, ensure the pump shaft and the impeller rotation balance.

3, XBD fire pump flow:

main reasons pump damage, pipe blockage or leakage. For fire pump adopt leather driving also consider whether caused by a lack of belt skid caused by low speed flow. Checked after screening belt line, plug leaks flow less than impeller damage should be taken into account. Check the impeller and the bearing lubrication, avoid the bearing lubrication or damage caused by insufficient speed flow.

4, XBD fire pump system vibration fault:

fire pump bearing system failure cause insufficient flow, heat pump body and seized up, etc. , due to the cause of the vibration is too large a unit pump shaft and motor rotor shaft deformation, bearing damage and base fixed bolt looseness, etc.

after the vibration is too large, should be checked first line bolt is firmly fixed base, then check to see if the bearing parts overheating rotation not free, and so on and so forth. If the above situation can determine the vibration is bearing damage caused. Rule out other causes after the unit vibration, still can be considered a pump shaft and motor rotor shaft rod deformation caused by excessive vibration. shaft or electronic rotor shaft rod deformation are temporary, is due to the unit bearing part of the damage caused by local overheat deformation. Deformation temperature equilibrium after downtime can disappear.

5, XBD fire pump can't start:

check the power supply, fire pump joint connection is strong; Whether the switch contact closely; Whether fire pump fuse fusing; Three-phase power supply is lack of phase. If there is open circuit, poor contact, fusing, lack of equal, should find out the reason for repair. Second check the fire pump mechanical failure, common causes are: fire pump packing too tight, between the impeller and the pump body is sundry jam and jam; Its fire pump shaft, bearings, minus leakage ring rust to live, fire pump shaft bending, etc. Excluded methods: relax packing, dredge flume, clear pump body sundry, derusting, correct the pump shaft or update the pump shaft.

6, not XBD fire pump suction sheung shui:

there is air or gas inlet pipe product in the water pump body, or the bottom valve closed lax, irrigation water diversion discontent, vacuum packing serious leakage, a gate or door closed lax. Method: the water first, again will fire pump pump body filled with water, and then switched on. Check whether the fire pump check valve is tight at the same time, pipe, joint presence of air leakage phenomenon, such as the discovery of fire pump leakage, disassembled, then place with lubricating oil or mixed paint, screw down the screws. Check the fire pump shaft seal ring, such as severe worn should replace new pieces; Fire pump pipe road water or air, fire pump may be installed when the nut is not tight. If fire pump leakage is not serious, can leak or leaks with cement, or asphalt mixing the slurry oil. A temporary repair can use wet mud or soft soap.

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