EWS UFS8000, Operating Manual, Page: 54 / 130

UFS8000 UF Unit 47
If no 2
nd
backwash is desired, the phase may be omitted by turning the phase switch off (no check
mark in “Activate”). If the phase is activated the various stages can be programmed.
7.4. Pre Flush
The "Pre Flush" phase is used to clean the membrane before going into “Filtration”.
The “Pre Flush” phase consists of one step with a duration of each 0-9999 seconds / minutes.
If no pre-rinsing is desired for the “Filtration” phase, the phase may be omitted by turning the phase
switch off (no check mark in “Activate”). If the phase is activated the various stages can be
programmed.
For each stage you can enter what inputs or limits have to be monitored and what outputs have to be
activated and the time duration of the phase (0-9999 seconds / minutes).
If a time of 0 is entered the corresponding phase will be omitted.
7.5. Backwash 1
The "Backwash 1" phase is used for a standard backwash cycle. This phase will always be activated
and will follow after the phase “Filtration”. Schematically this will looks as follows :
The backwash may comprise a max. of 6 stages each with a time duration of 0-9999 seconds
/minutes.