At this field the user defines the pressure difference between the filter’s inlet and outlet
that when reached, a flushing cycle will take place. The DP set-point field will disappear if
there is no Electronic DP connected. In this case the Digital DP input can be used.
Up to version 1.02 of the Filtron 1-10, a nonzero value Set-point would have caused the
controller to ignore the Digital DP input completely, but a zero Set-point would make the
Digital DP effective and cause the Electronic DP to be ignored.
Starting from version 1.03 a change was made so that a nonzero Set-point does no longer
cause the Digital DP input to be ignored, but instead a closed contact Digital DP input will
cause the unit to keep on executing flushing cycles as long as the contact remains closed,
ignoring the looping limit. When the DP contact reopens, the flushing stops right away
without completing the running flushing cycle.
Starting from version 1.05 everything explained above for version 1.03 holds, but instead
of executing complete flushing cycles while the Digital DP input is closed, it will be only
valve No. 1 which will remain open as long as the contact is closed.
Starting from version 1.03 if there is no Analog DP connected or when the set-point equals
zero the unit refers to the Digital DP in the normal way, namely when the contact of the
Digital DP is constantly closed it will execute consecutive flushing cycles until reaching the
Looping Limit and then declare an endless Looping problem.
When the pressure is expressed in BAR the range of values is 0.1 – 2.0 BAR.
When the pressure is expressed in PSI the range of values is 1- 30 PSI. The closed Digital DP
contact will be indicated by the symbol :
The information contained herein may be changed by Deeco Services without notice. Deeco Services shall not be held liable for any errors
National Service and Supply Centre
35 Wakefield Street, Alicetown 5010
www.deeco.co.nz
The Flush Time
5-20 sec in steps of 1 sec
20-55 sec in steps of 5 sec
1-6 min in steps of 0.5 min
Defines the duration of the flushing time per station. The following options are selectable:
The DP Set Point
