Attention: Please clean the sewage tank in time. The float will work and STOP the suction if sewage exceeds the maximum water level of the sewage bucket.
Use a low-foaming type of low acid detergent. For the amount and usage of the cleaning solvent and recommendation brand, please read the manual carefully and use it correctly. We strongly suggest you to spray the detergent to the target surface instead of put it into the water tank.