○ After the hot water becomes clear during the water flow test, always clean the filter(build in check valve) and shower head.Filter pipeRemove and clean any dirt trapped within the filter pipe.Spa shower headpackingFailure to do so can result in insufficient flow rate and faulty temperature regulation.Take care not to damage or lose the O-rings and packing.CAUTIONAerator core O-ring8 Cleaning And Check Of The Upper Unit25■ Cleaning■ Checking Of Floor Unit■ Checking Of Filter PipeFor checking of the floor unit, refer to the followings;For checking of the upper unit, refer to the followings;CAUTION Be sure to check the floor unit in order to prevent accidents in operation.1. There is no cracks or dirt on the basin.2. There is no defects such as scratch in appearance.3. Lift the front of the basin and tilt it to check that the buzzer sounds.(Only for Back Wash Basin (YUME Basin)Overflow windowOverflow float1. No leakage in the piping connection part.The connection may get loosen during transportation.Tighten the piping connection part in the floor unit again.2. All machine screws are attached.3. The floor unit is firmly secured.If the floor unit is loosened, tighten the machine screws of thelevel adjusters or the attaching part again.4. The overflow window is closed.If the overflow window is open, lower the overflow float to thespecific position and close the overflow window.5. Check for any defects such as scratch in appearance.