The following are some precautions for the use of cam rotor pumps:

Foundation Installation
The cam rotor pump should be installed on a solid and level foundation to ensure that the pump body is installed firmly and to avoid vibration and displacement during operation. The installation location should be convenient for operation, maintenance, and inspection, and there should be sufficient space around it.
For large cam rotor pumps or in a working environment that is more sensitive to vibration, shock-absorbing pads or shock-absorbing brackets need to be used to reduce the transmission of vibration, so as to extend the service life of the pump and improve its operational stability.

Pipeline Connection
When connecting the inlet and outlet pipelines, it is necessary to ensure that the inside of the pipelines is clean, free of impurities, welding slag and other foreign substances, so as to prevent them from entering the pump and damaging the rotor or other components.
The diameter of the pipeline should match the diameter of the inlet and outlet of the pump. Try to avoid reducing or enlarging the diameter of the connection to prevent additional resistance. If it is necessary to use a reducer or enlarger, an eccentric reducer or enlarger should be used to avoid gas accumulation at the top of the pipeline.
When installing the pipelines, attention should be paid to reserving a certain amount of thermal expansion space for the pipelines, especially when transporting high-temperature media, to prevent the pipelines from exerting excessive stress on the pump body due to thermal expansion and contraction.

Coupling Installation (if any)
When the pump is connected to driving equipment such as a motor through a coupling, the installation accuracy of the coupling should be ensured. After installation, it is necessary to check the concentricity and axial clearance of the two shafts. Generally, the concentricity error should be controlled within the allowable range. Usually, the radial displacement is required not to exceed 0.05 - 0.1 mm, and the axial inclination is not to exceed 0.2/1000.

Barring Inspection
Before starting the pump, it is necessary to manually turn the coupling to check whether the rotor can rotate flexibly. If there is a feeling of jamming, the cause should be checked in time. It may be due to foreign substances between the rotor and the pump body, damage to rotor components, or shaft bending, etc.

Lubrication Inspection
Check the lubrication condition of the parts that need lubrication, such as bearings and gears. Ensure that the amount of lubricating grease or lubricating oil is sufficient and the quality meets the requirements. For pumps that have not been used for a long time, the lubricating grease or lubricating oil should be replaced first to prevent the aging of the grease from affecting the lubrication effect.

Seal Inspection
Carefully inspect the sealing parts of the pump, including mechanical seals and packing seals. Ensure that the seals are installed correctly, without damage, and that the compression degree at the sealing place is appropriate. For mechanical seals, check whether the sealing surfaces are flat and clean, and whether the springs between the moving ring and the static ring are normal.

Valve Inspection
Confirm that the inlet and outlet valves are in the correct open and closed states. The inlet valve should be fully opened to ensure sufficient suction volume; the outlet valve can be adjusted appropriately according to the startup requirements. For example, it can be opened slightly at startup to avoid overloading the motor due to excessive outlet pressure.

No-load Startup
For the first startup or startup after a long period of non-use, it is recommended to perform a no-load startup first. That is, first open the inlet valve and close the outlet valve, and let the pump run for a period of time without load, usually 1 - 2 minutes. Check whether the running sound, vibration, and rotation direction of the pump are normal. If any abnormality is found, the pump should be stopped immediately for inspection.

Load Startup and Operation
After the no-load startup is normal, slowly open the outlet valve to make the pump gradually load and run. During the operation process, pay close attention to the parameters such as pressure, flow rate, and temperature of the pump. The pressure and flow rate should be stable within the specified ranges. If the pressure suddenly rises or the flow rate suddenly decreases, it may be due to pipeline blockage or problems with the internal components of the pump.
Pay attention to observing the running temperature of the pump, especially the temperature of the bearings and the pump body. Generally, the bearing temperature should not exceed the specified maximum temperature (usually around 70 - 80°C). If the temperature is too high, it may be due to poor lubrication, bearing damage, or overloading of the pump.
During the operation process, keep the working environment of the pump clean to avoid dust, debris, etc. from entering the pump and affecting the operation. At the same time, pay attention to the operation situation of the motor, such as whether the current is stable, to prevent the motor from overloading.

Avoid Dry Running
Dry running of the cam rotor pump is strictly prohibited when there is no medium. Because during dry running, the friction between the rotor and the pump body will increase sharply, which is likely to cause wear of the rotor and the pump body, and even damage the sealing components. If the situation of flow interruption at the suction end occurs during the operation process, the pump should be stopped immediately.

Normal Shutdown
When shutting down, the outlet valve should be closed first, and then the motor should be stopped to prevent the medium from flowing back and causing impact on the pump. After the pump has completely stopped, the inlet valve can be closed.

Emergency Shutdown
In case of emergencies, such as severe vibration of the pump body, abnormal sound, smoking, leakage, etc., the emergency stop button should be pressed immediately to cut off the power supply. After emergency shutdown, a comprehensive inspection of the pump is required, and the pump can be restarted only after the faults are eliminated.

Regular Inspection
Regularly conduct a comprehensive inspection of the pump, including appearance inspection (checking for signs of leakage, corrosion, etc.), inspection of internal components (such as the wear condition of the rotor, the wear and aging of the seals), inspection of the lubrication condition, etc. Generally, it is recommended to conduct a simple appearance inspection once a month and a more comprehensive internal inspection once every 3 - 6 months.

Component Replacement
According to the inspection results, replace the worn or damaged components in a timely manner. For example, when the rubber coating layer of the rotor is severely worn, the rotor should be replaced in time to avoid affecting the performance and efficiency of the pump. For seals, they should be replaced in a timely manner according to the specified service life or when there are signs of leakage.

Cleaning and Anti-corrosion
After transporting some media that are prone to solidification, crystallization, or corrosion, the pump should be cleaned in a timely manner. The inside of the pump body and the pipelines can be rinsed with clean water or a suitable cleaning solution to prevent the residue of the media from causing corrosion or blockage of the pump. For pumps that have not been used for a long time, anti-corrosion measures should be taken, such as injecting anti-rust oil into the pump.