1. Contents of checking before starting:
(1)Check whether the water source is sufficient or not.
(2)Check whether the power source and air source are sufficient or not.
2.Manually start SFP device( All the switches shall be in Manual positions)。
(1) Open the wash drain valve and backwash drain valve.
(2) 30 seconds later, close the backwash drain valve, and wash for 2min,
(3) After the wash for the SFP device is qualified, close the wash drain valve and open the water inlet to put SFP device into operation.