Common faults and troubleshooting of Roots blower:

Common faults and troubleshooting methods of Roots blower. Some faults are often encountered during the operation of Roots blower. Xin Qianshun summarizes the following common faults and troubleshooting methods for you, hoping to help you!

1. Impeller and impeller friction
(1) The impeller is contaminated with impurities, resulting in too small clearance; Clean the dirt and check whether the internals are damaged;
(2) Gear wear causes large backlash; Adjust the gear clearance. If the gear backlash is more than 30% to 50% of the average value, replace the gear;
(3) The gear is not firmly fixed and cannot keep the impeller synchronized; Reassemble the gear and keep the taper fit contact area up to 75%;
(4) Bearing wear causes larger clearance. Replace the bearing.
2. Impeller and wallboard, impeller top and casing
(1) Incorrect installation clearance; Readjust the clearance;
(2) The operating pressure is too high, exceeding the specified value; Find out the cause of overload and reduce the pressure to the specified value;
(3) The operating temperature is too high; Check the installation accuracy and reduce the pipeline tension;
(4) The casing or base is deformed, and the fan positioning is invalid; Check and repair the bearing and ensure the clearance.
(5) The axial positioning of the bearing is poor.
3. Temperature too high
(1) There is too much oil, too thick and dirty in the oil tank; Lower the oil level or carry oil;
(2) The filter or muffler is blocked; Clear the blockage;
(3) The pressure is higher than the specified value; Reduce the pressure difference through the blower;
(4) The impeller is excessively worn with large clearance; Repair clearance;
(5) Poor ventilation and high indoor temperature cause high inlet temperature; Open vents to reduce room temperature;
(6) The running speed is too low, and the belt slips. Increase the rotating speed to prevent the belt from slipping.
4. Insufficient flow
(1) Inlet filtration is blocked; Clean the dust and blockage of the filter;
(2) The impeller is worn and the clearance increases too much; Repair clearance;
(3) Belt slipping; Tighten the belt and increase the number of belts;
(4) Large inlet pressure loss; Adjust the inlet pressure to the specified value;
(5) The pipeline causes ventilation leakage. Check and repair pipes.
5. Oil leakage or oil leakage into the casing
(1) The oil tank is high and leaks out from the oil drain; Lower the oil level;
(2) The seal is worn, causing oil leakage at the shaft end; Replace the seal;
(3) The pressure is higher than the specified value; Dredge the vent, install a cock with 2mm aperture in the middle chamber, and open the cock under the wallboard;
6. Excessive current
(1) Low voltage; Suspend the fan operation, and replace the high-power motor if necessary;
(2) The filter or pipeline is blocked; Clear the blockage;
(3) The clearance in the fan changes, with friction and collision; Analyze the cause of clearance change, eliminate it and repair it
Friction part;
(4) Excessive load; Check and eliminate the causes of load out of tolerance, and adjust to rated load;
(5) Motor fault; Repair the motor and replace it if necessary;
7. Abnormal vibration or sound
(1) The bearing is damaged and the clearance is too large; Replace the bearing;
(2) The foreign matter enters the impeller hole and damages the balance, or the foreign matter is stuck in the fan; Clear the foreign matters and check whether the foreign matters damage the fan;
(3) Friction and collision in the fan caused by overload and overheating; Eliminate the factors that cause abnormal working conditions, and check whether there are damaged parts;
(4) Coupling misalignment; Adjust the coupling;
(5) The belt tension is too large or too small; Adjust the belt tension;
(6) Bolts at relevant connection parts are loose; Fasten the connecting bolts;