AIRE-064-1-4
35
2. Air Diffuser Cleaning
The clogging of diffuser holes causes uneven air diffusion and membrane clogging, and the
elements are broken in the worst case. Please clean the air diffusers at least once a day to
prevent such trouble. (it is recommended to install the automatic air diffuser cleaning system
with automatic valves).
The air diffusers are cleaned up with the reverse flow of the sludge from the diffuser holes
into the diffuser pipes, which is generated by the air jet flow from the blower through the air
diffuser pipes to the branch discharge nozzle.
(1) Air diffuser cleaning procedure
(i) Stop
filtration.
(ii) Close V1 valve.
(iii) Open V2 valve. At this step, the sludge
liquid comes through the diffuser holes
into diffuser piping, and is discharged
together with the air.
(iv) Keep V2 valve open for about one (1)
minute.
(v) Close V2 valve, and then open V1 valve.
(vi) Clean the other line in the same manner
as follows.
(vii) Close V3 valve.
(viii) Open V4 valve. At this step, the sludge
liquid comes through the diffuser holes
into diffuser piping, and is discharged
together with the air.
(ix) Keep V4 valve open for about one (1)
minute.
(x) Close V4 valve, and then open V3
valve.
(xi) Restart
filtration.
Close Valve
Air Flow
direction
Air Diffuser
B
V1
V3
V4
V2
Air Supply Pipe
Blower
Blanch nozzle
B
V1
V3
V2
Blower
V4
Open Valve
Cleaning
Close Valve
Open Valve
