1. Roots blower shall not be installed in places where people often go in and out to prevent injury and scald.
2. Roots blower shall not be installed in places where inflammable, explosive and corrosive gases are easily generated, so as to prevent fire disasters, poisoning and other accidents.
3. According to the direction of the air inlet and outlet and the maintenance needs, there should be adequate space around the foundation surface.
4. When installing the fan, check whether the foundation is firm, whether the surface is flat, and whether the foundation is higher than the ground.
5. When the fan is configured outdoors, a canopy shall be set.
6. The fan can be used for a long time under the ambient temperature of no more than 40 ℃. When the temperature exceeds 40 ℃, exhaust fan and other cooling measures should be installed to improve the service life of the fan.
7. When conveying air medium, its dust content shall not exceed 100mg/m3 generally.
8. Precautions for operation and use of Roots blower
(1) All parts of the fan shall be comprehensively inspected to see whether the parts are complete, the tightness of bolts and nuts, the installation quality of fasteners and locating pins, the installation quality of air inlet and exhaust pipes and valves, etc.
(2) In order to ensure the safe operation of the blower, it is not allowed to bear external loads such as pipes, valves, frames, etc.
(3) Check the centering and alignment quality of blower and motor.
(4) Check whether the base of the unit is fully padded and whether the foundation bolts are fastened.
(5) Fill the oil tank with mechanical oil of the specified brand into the oil level line. The lubricating oil brand is R320 medium load working gear oil.
(6) Check whether the rotation direction of the motor meets the pointing requirements.
(7) The belt cover (protective cover) shall be installed at the belt pulley (coupling) to ensure the safety of operation.
(8) Fully open the inlet and outlet valves of the blower, and turn the rotor of the blower. It should rotate flexibly without impact and friction. Only when it is confirmed that everything is normal can the blower be started for trial operation.
9. No load test run of blower
(1) Newly installed or overhauled fans shall undergo no-load test run.
⑵ The concept of no-load operation of Roots blower is to put it into operation when the inlet and outlet valves are fully opened.
⑶ There is no abnormal smell or smoke, collision or friction sound, and the radial vibration speed of the bearing is not greater than 6.3mm/s.
⑷ Run with no load for about 30 minutes. If the condition is normal, put it into load operation. If the operation is abnormal, check and eliminate it, and still need to run with no load.
10. The blower operates continuously under normal load.
(1) It is required to gradually and slowly adjust the load to the rated load. It is not allowed to adjust the load to the rated load at one time.
(2) The so-called rated load refers to the static pressure difference between the inlet and exhaust ports, according to the calibrated pressure value on the nameplate. When the pressure at the exhaust port is normal, pay attention to the pressure change at the air inlet to avoid overload.
⑶ During the normal operation of Roots blower, it is strictly prohibited to completely close the inlet and outlet valves. Pay attention to the pressure condition regularly, and check whether the safety valve acts to exhaust in case of overload. Otherwise, the safety valve should be adjusted in time, and overload operation is not allowed.
⑷ Due to the characteristics of Roots blower, it is not allowed to directly return the gas from the exhaust port to the air inlet of the blower for a long time (changing the temperature of the air inlet), otherwise the safety of the machine will be affected. If it is necessary to take reflux regulation, cooling measures must be taken.
(5) Always pay attention to the oil quantity position of lubricating oil, check regularly, and make records to ensure the oil quantity.
11. Parking
Roots blower should not be stopped suddenly under full load. It must be stopped after unloading gradually to avoid damage to the machine. Users can draw up rules for emergency stop.
12. The safe operation and service life of the blower depend on correct and frequent maintenance, and attention should be paid to any accident. In addition to general maintenance procedures, attention should be paid to the following points.
1. Check the fastening of each part and whether the locating pin is loose.
2. There is no oil leakage inside the blower body.
3. There shall be no scaling, rust and scaling inside the blower body.
4. Pay attention to whether the lubrication and heat dissipation are normal, pay attention to the quality of lubricating oil, often listen to whether the blower runs noisily, pay attention to whether the unit operates under the condition that does not meet the requirements, and pay attention to adding grease regularly.
5. Sometimes the overload of Roots blower is not displayed immediately, so pay attention to the increasing trend of inlet and exhaust pressure, bearing temperature and motor current to judge whether the machine operates normally.
6. Before disassembling the machine, measure and record the matching dimensions of the machine, and mark the parts to ensure that the original matching requirements are maintained after assembly.
7. For new machines or overhauled blowers, the oil tank should be cleaned and put into operation according to the operating procedures. It is recommended to replace all lubricating oil after 8 hours of operation.
8. The maintenance and overhaul shall be carried out on schedule according to the specific use conditions, and a reasonable maintenance system shall be formulated and recorded. It is recommended to overhaul once a year, and replace bearings and relevant vulnerable parts.
9. The overhaul of Roots blower is recommended to be carried out by our company or professional maintenance personnel.
