How to use the pipe pumps?

1. Test: check whether the fitting is loose;Dish with the hand dynamic coupling rotor revolutions circle, whether turning is flexible, whether there was a noise, and the weight unevenness of feeling, to decide whether pump for foreign body or shaft bending, seal installation is not straight, etc.;Check whether the lubricating oil in the sealed chamber is filled with 1/2 cavity space;Whether the pump unit surface is clean;The unit turns to no-load test.

2. Manually start: pump (the first time), slightly open the outlet valve, start the motor, increase the pressure and confirm that the outlet valve should be opened to the operating condition when the pump group is running smoothly.

3, run check: pipeline pump in the normal operation of the power frequency, shall regularly check and record the pumps ammeter, voltmeter, import and export vacuum gauge, pressure gauge and flow meter reading, the vibration of the unit, such as noise, temperature rise is normal, place should not have obvious fuel leak of the shaft sealing system.

4. Normal parking: shut off the discharge valve, and make the pump light load and stop the motor.

Emergency parking condition:

The operating ammeter of the pump motor is abnormal (too large or too small);The pump system makes an abnormal noise.

The vacuum pressure gauges and outlet pressure gauges of the pump inlet are abnormal, and the pump body vibrates greatly and makes the noise, and the performance is seriously reduced.

The pump motor produces peculiar smell, the shaft seal leakage of aviation fuel, bearing temperature over 75 degrees.