Shallow bed filter

The process for replacing or cleaning the surface filter is as follows:
1. Shut down the entire system.
2. Close the inlet valve.
3. Loosen the top flange screws, turn the handle's first wheel, positioning the top flange 5 cm away from the bottom flange, then roll the handle to remove the head from the cylinder, allowing access for cleaning or replacing the filter bag.
4. Open the low-head sewage outlet to flush the water in the shallow filter.
5. Loosen the fasteners of the filter bag and remove the filter bag.
6. Rinse the filter bag with water until clean or replace it.
7. Rinse the inner surface of the filter with water, clean off the dirt, and discharge it through the drain outlet. Tighten the drain plug, then place the filter bag inside and secure the bag fasteners.
8. Move the swing arm to align the valve cover flange with the cylinder flange. Rotate the swing arm's initial wheel, place the top flange and bottom flange, ensure the sealing ring is properly seated and not displaced, then tighten the screws.