Online Message | contact us | chinese | Welcome to the official website of Shandong Xinqianshun Machinery Co., Ltd!
Roots blower manufacturer
National hotline 0531-83663588
Current location: home page > news information > Roots blower information

How to carry out no-load operation and normal load operation of Roots blower

Source: Roots blower manufacturer Published on: March 1, 2022 Hits:

1、 No load test run of roots blower.

(1) Newly installed or overhauled fans shall undergo no-load test run.
      （2） Roots blower The concept of no-load operation: put into operation when all the inlet and outlet valves are open.
(3) During the test run, pay attention to whether the splash of lubricating oil is normal. If it is too much or too little, adjust the oil volume.
(4) There is no abnormal smell or smoke, collision or friction sound, and the radial amplitude of the bearing is not greater than 0.08mm.
(5) Operate with no load for about 30 minutes, and then operate with load if the condition is normal. If it is found that the operation is abnormal, it shall be checked immediately, and the no-load operation is still required after the fault is eliminated.
2、 The blower operates normally with load
(1) Gradually and slowly adjust as required, and load until rated load. It is not allowed to adjust to rated load at one time.
(2) The so-called rated load refers to the static pressure difference between the inlet and exhaust ports marked on the nameplate. When the exhaust pressure is normal, pay attention to the pressure change at the inlet to avoid overload.
(3) Due to the characteristics of Roots blower, it is not allowed to directly return the gas at the exhaust port to the air inlet of the blower for a long time, otherwise the safety of the machine will be affected.
(4) During the normal operation of the fan, it is strictly prohibited to completely close the air inlet and outlet valves and overload operation.
(5) When Roots blower operates under rated conditions, the surface temperature of each rolling bearing generally does not exceed 85 ℃, the lubricating oil temperature in the oil tank does not generally exceed 65 ℃, and the radial vibration near the bearing does not exceed 0.08mm.
(6) Always pay attention to the splash of lubricating oil and the position of oil volume.
3、 Parking
The blower should not be stopped suddenly under full load. It must be stopped after gradually unloading the load to avoid damage to the machine. The user can discuss the principle of emergency shutdown separately.