1. Manually place the PCBA boards to be coated (component side up) into the automatic feeding conveyor.
2. The boards are transferred from the automatic feeding conveyor into the conformal coating machine for top side (A-side) spraying. After coating, the PCBA boards enter a sealing inspection conveyor for buffering and leveling.
3. The boards then proceed into the infrared curing oven for curing. After curing, they enter the flipping machine for board inversion.
4. Following inversion, the boards enter the coating machine for bottom side (B-side) spraying. After coating, the PCBA boards enter a sealing inspection conveyor for buffering and leveling.
5. The boards then proceed again into the UV curing oven for final curing. After curing, they enter an automatic elevator for vertical transfer down to the lower-level return conveyor.
6. The boards are transported via the return conveyor to the front-section elevator, then transferred to the automatic feeding conveyor for manual sampling inspection and removal.