Boiler feed pump should be the correct method of operation: First of all, open the inlet valve, close the outlet valve, start the motor until the speed is normal, in order to gradually open the outlet valve, adjust to the desired conditions. Centrifugal pump operation can be divided into three steps, that is, start, run, stop.
Centrifugal pump the right way to start:
Before starting should do the following preparations:
(1) Check the water pump equipment intact.
(2) bearing oil, oil level is normal, qualified oil (3) the centrifugal pump inlet valve all open.
(4) water pump or water pump (except for irrigation) to open the exhaust valve exhaust.
(5) Check the shaft seal leakage, packing seal to a little drip appropriate.
(6) Motor rotates in the correct direction.
After the above preparations are completed, you can start the motor until the speed is normal, check the pressure, current and pay attention to whether there is vibration and noise. After everything is normal, gradually open the outlet valve, adjust to the required conditions, pay attention to the valve idle time should not exceed 3 minutes.
run:
During the operation, the main tour inspection, inspection of the contents of four aspects:
1, the bearing inspection (1) bearing temperature does not exceed 75 ℃.
(2) bearing chamber can not enter the water, into impurities, oil can not be emulsified or black.
(3) thin oil lubrication of rolling bearings, the oil surface should not be lower than the centerline of oil.
(4) whether there is abnormal noise, rolling bearings are generally abnormal sound damage.
2, vacuum gauge, pressure gauge, ammeter reading is normal (1) vacuum gauge pointer can not swing too large, too large may cause the pump inlet vaporization, vacuum gauge reading can not be too high, too high may be the inlet valve is blocked, the card Living or absorbing water level reduction.
(2) reading the outlet pressure gauge is too low, the seal ring may be, the guide vane set of serious wear and tear. Set, the rotor gap is too large, or the outlet valve is open too much, flow, lift low.
(3) Ammeter reading too large, may be large flow, or set, the friction between the rotor.
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