The difference between 4-68 and 4-72 centrifugal fans
4-68 and 4-72 centrifugal fans are both used for urban ventilation in general factories and large buildings. Gas or conveying air and other gases that are non-self-igniting, non-explosive, non-volatile, harmless to the human body, and non-corrosive to steel, the gas temperature does not exceed 80°C.
The 4-68 type centrifugal fan has a narrower casing than the 4-72 type centrifugal fan, so the pressure is higher. The 4-72 type centrifugal fan has two fewer blades than the 4-72 type centrifugal fan. This is a difference in appearance and parameters.
Daily maintenance of 4-68 centrifugal fan and 4-72 centrifugal fan:
1. Regularly remove dust, dirt, water and other impurities in the fan and gas pipeline, and prevent rust.
2. When repairing the fan, the power must be cut off first. It is absolutely not allowed to be carried out while it is running. The switch should be supervised by a dedicated person to prevent power transmission midway.
3. The sensitivity of the thermometer and oil mark should be checked regularly.
4. In addition to changing the lubricating oil after each disassembly and repair, the lubricating oil should also be replaced regularly.
5. Before and after each maintenance, the quantity of tools and raw materials should be carefully recorded, counted, and checked to prevent them from being forgotten inside the fans and pipes.
6. During the test run of the wind turbine, no one is allowed to stand within 10 meters from the entrance and exit.
7. During installation, maintenance and test runs, it is strictly forbidden for irrelevant personnel to be present and watch.