1: When installing the plug-in filter element, the O-ring should be wetted in the clean filtrate first to reduce the friction during insertion. And it is required to insert it to the end to ensure that both O-rings have a sealing effect;
2: When installing the snap-in filter element, it needs to be rotated and positioned clockwise;
3: If the filter has a pressure plate, press the pressure plate on the warp plate and gently compress the spring on the pressure plate. If the spring is too tight, the filter element will be twisted and deformed and affect the filtration accuracy;
4: When filtering liquid, you should first turn on the exhaust switch on the shell to empty the gas in the filter cartridge and fill the filter cartridge with liquid, otherwise it will affect the flow rate;
5: The fluid filter will produce a pressure drop due to resistance. In order to overcome the resistance, there must be sufficient working pressure. In order to prevent the filter element from being impacted by a large flow, the valve should be opened slowly.