INSTRUCTIONS MANUAL AUTOMATIC FILTERS
FCD-FACD-FFD /DT /DP /DT-DUAL /DP-DUAL
s.r.l.Milano - ITALY Page 12 of 23 fcd-dp_mi-r4.doc – r.4
5. END CYCLE AND REGENERATION
5.1. End cycle at time (for all version)
The electronic micro-processor programmer allows to run the regeneration according to time
schedule, at pre-set time and day (max 3 regeneration per day).
5.2. End cycle at pressure drop (only for version DP e DP-DUAL)
The unit is equipped with 2 pressure sensors plumbed on inlet and outlet line of the filters;
the sensors gauge the correspondent pressure (IN/OUT) and therefore also the differential
pressure; when the pressure drop across the filtering bed reaches the value of 0.8 bar (80 kPa),
the end-cycle is driven.
During normal service, possible peaks of pressure could cause a wrong indication of reached
max allowable pressure drop; in order to avoid that, the end-cycle driving is delayed of an
adjustable time. Hence the max pressure drop must remain for all the time of adjusted delay, to
drive the end-cycle.
To set the regeneration by time only (regardless of pressure drop), proceed as follows :
- set at least 1 regeneration by time schedule
- enter as max allowable pressure drop (end-cycle) the value 10000.
To set the regeneration by pressure drop only (regardless of time), proceed as follows :
- delete any programmed regeneration by time control
- enter as max allowable pressure drop (end-cycle) the desired value (standard =8)
5.3. Regeneration
The regeneration is automatically controlled by the electronic programmer according to time
schedule or (only for version DP e DP-DUAL) pressure drop.
The regeneration can also be started manually at any time, out of any automatic
programme, by keeping pushed for 3 consecutive seconds the button “START”.
Warning :
• The pushing of the button "START", while a regeneration is already
running, does not have any effect.
• An undesirable regeneration can be interrupted, in any moment, by
keeping pushed the button “RESET” for 3 consecutive seconds.
When the manually started regeneration is completed, the unit will continue to work
according to previous programming.
-DUAL arrangements only :
The regeneration of column A starts when the button “START” is kept pushed for 3 consecutive
seconds, while the column B turns on REGENERATION REQUIRED.
The regeneration of column B can be started, before the one of column A is completed,
interrupting this one by keeping pushed for 3 consecutive seconds the button “RESET”.
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