Nobel FCD 05 Instruction Manual
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Contents
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INSTRUCTIONS MANUAL AUTOMATIC FILTERSFCD-FACD-FFD /DT /DP /DT-DUAL /DP-DUALs.r.l.Milano - ITALY Page 12 of 23 fcd-dp_mi-r4.doc – r.45. END CYCLE AND REGENERATION5.1. End cycle at time (for all version)The electronic micro-processor programmer allows to run the regeneration according to timeschedule, 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 differentialpressure; 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 reachedmax allowable pressure drop; in order to avoid that, the end-cycle driving is delayed of anadjustable time. Hence the max pressure drop must remain for all the time of adjusted delay, todrive 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. RegenerationThe regeneration is automatically controlled by the electronic programmer according to timeschedule or (only for version DP e DP-DUAL) pressure drop.The regeneration can also be started manually at any time, out of any automaticprogramme, by keeping pushed for 3 consecutive seconds the button “START”.Warning : • The pushing of the button "START", while a regeneration is alreadyrunning, does not have any effect.• An undesirable regeneration can be interrupted, in any moment, bykeeping pushed the button “RESET” for 3 consecutive seconds.When the manually started regeneration is completed, the unit will continue to workaccording to previous programming.-DUAL arrangements only :The regeneration of column A starts when the button “START” is kept pushed for 3 consecutiveseconds, 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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