The sands in the Water tank should be cleaned totally when the sullage removal System start to be used.

The sullage removal System should be move next to the water tank and the entrance of vacuum pump should be connect to 0.5MPa compressed air.

Put the entrance into the water tank, during the operation, the clean water will be outlet through the water outlet and the sands will be outlet through the sands outlet. Assure the water outlet is next to the water tank, so that the water can be used circularly.

Open the door of the sands outlet and remove the sands. Check inside of the system regularly