Several points need to be paid attention to when settling the claim with roots blower manufacturer

1. The wires are reversed
The wires are reversed! This problem, has always been a small problem, but a problem is a big problem, and "toothache" the same reason, in the installation of the fan, do not reverse the motor wire, wire reverse, the motor instantly burned! This kind of fault, the manufacturer will not give us a claim, this is a manual operation error, roots blower itself has no other problems.
2. Forget to add lubricating oil
The gear box is filled with lubricating oil. When it leaves the factory, it will not add lubricating oil for us. It is a separate bottle, and some manufacturers have installed it. Therefore, when it is installed and started, it is necessary to check the oil tank. If the roots blower is started without lubricating oil, the gear will be damaged and the motor will be burned instantly. It's good to contact the supplier with such fault reason, and they can answer our phone.
3. Forced frequency conversion
Roots blower can be divided into frequency conversion and non frequency conversion, mainly due to the change of motor. Some customers have experience in using roots blower, and will automatically refit the motor, and refit the non frequency conversion motor into frequency conversion control. If the fault is caused within the warranty period after the transformation, the fan manufacturer will not settle the claim.
4. Negative pressure start
The start-up of Roots blower is no-load start-up. Negative pressure start-up causes instantaneous overpressure of blower, which causes other faults. The manufacturer will not settle the claim, which also belongs to manual operation error. The correct start-up mode is: no-load start-up, slowly close the vent valve.
5. Check valve not installed
The function of check valve is very important. When roots blower is running, if the gas flows back, the check valve can effectively prevent the gas return. If the check valve is not installed, the gas return will cause the blower to reverse. The reverse rotation of Roots blower is very harmful, and the blower may be burnt out for a period of time. Therefore, the gas return will cause the blower to reverse and burn out because the check valve is not installed, Manufacturers will not care about us~
The above five are common human operation errors, and the following three are also human operation errors, but they are not very important. If the following three are not paid attention to, they may also cause indirect fan damage. Let's continue to look at the following:
6. Anchor bolt
The anchor bolt is an accessory for fixing the fan. Some customers' anchor bolts are lost or broken, and some will directly weld a steel bar. The welding is just enough. Huadong motor has seen the "chicken excrement welding" technology used to weld the anchor bolts. When Roots fan is used in the later stage, the probability of failure is very high.
7. Elastic joint
The flexible joint of Roots blower outlet link can effectively prevent the impact of vibration on the pipeline. In order to reduce the vibration of the blower, some customers directly link the outlet to the flange. Although it can be operated in this way, it is not scientific.
8. Imported muffler
Roots blower and muffler are assembled and delivered separately. After the arrival of the goods, we need to install the muffler, and then carry out the trial operation. Do not install the imported muffler for direct trial operation. There is a certain risk. If the foreign matters enter through the imported muffler, it is easy to cause the fan to get stuck.

Related products:

Roots vacuum pump is used for electrolyte filling and degassing