Plz anyone know how to rest because he showing cleaning off

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Direct answer to the question • “CLEANING OFF” on a Nederman DFC-08M is not a fault but a status telling you that automatic pulse-jet cleaning is disabled. • Restore cleaning by re-enabling the cleaning mode from the front-panel menu or by reinstating the external “fan-run”remote-start signal terminals 17-18. • When the enabling signal is present and no latched alarm is active, the legend will disappear and the controller will pulse the valves according to the selected mode Timer or ΔP. --- Detailed problem analysis 1. Why the controller shows “CLEANING OFF” • Manual de-activation from keypad operator set cleaning = OFF. • External interlock: input DI1 “Running”, factory wired to fan-starter auxiliary contact. If the fan is OFF or the jumper is missing, the DFC disables cleaning and writes “CLEANING OFF”. • ΔP-mode below start threshold Pstart. • Latched alarm e.g. A009 still present; alarms must be acknowledged before the controller resumes. 2. Internal logic • CPU: Atmel AT89C51AC3. Loss of the RUN signal, Maintenance mode, or any latched alarm clears the CLEAN flag in RAM; it is restored only by keypad command or a closed RUN contact at power-up. 3. Reset re-enable procedure most installations A. Front-panel sequence 1. Press and hold ▲ + ▼ both arrows ~3 s → “Par” appears. 2. Scroll to “CLEAN” or “MODE”. Press MENTER. 3. If asked for code, enter factory code “35” or your site code. 4. Set value to “ON”, “TIMER”, or “ΔP AUTO”. Confirm with MENTER. 5. ESC until main screen; “CLEANING OFF” should disappear within a few seconds. B. External RUN fan contact • Verify 24 V DC between terminals 17–18. • If the collector must work stand-alone, fit a permanent jumper. • When the contact closes, the controller re-initialises and starts the pause timer; after the first pause expires you will hear the pulse valves fire. C. Clear alarms if present • MENU ➔ ALARMS ➔ “RESET”. • For alarm A009 or any red flashing icon: hold RESET 3 s after the cause is removed. 4. Power-cycle reset does not change parameters • Isolate mains, wait ≥30 s, re-energise. • If “CLEANING OFF” returns immediately, the cause is still present open RUN, cleaning set OFF, or latched alarm. 5. Factory reset last resort • Hold MENU + ENTER during power-up → “rSt” flashes → ENTER. • All user parameters return to defaults; record settings first. --- Current information and trends • Nederman manuals issued 2023 keep the same DI1 RUN logic; newer firmware v1.42 and later adds an on-screen hint “WAIT RUN SIGNAL” when DI1 is open—verify in System > Info. • Latest service bulletins recommend replacing the analogue ΔP board only with rev. F or later to avoid nuisance “CLEANING OFF” due to sensor drift. • IoT add-on “Insight”—cloud diagnostics—can be ordered; remote alarm reset is possible through the gateway. --- Supporting explanations and details • Timer mode parameters: – tPULSE typ. 0.10–0.18 s – tPAUSE 5–180 s • ΔP mode parameters: – Pstart e.g. 1100 Pa – Pstop e.g. 800 Pa If Pstart is set unrealistically high, the unit will rarely reach it and stay “CLEANING OFF”. Analogy: think of the controller as the car’s wiper-interval switch—unless rain ΔP or driver command RUN input is present, the wipers remain parked “CLEANING OFF”. --- Ethical and legal aspects • Always apply Lock-OutTag-Out and bleed compressed-air header before opening solenoid manifolds or the electrical cubicle. • Follow EU ATEX & CE directives if installed in zoned areas; bypassing alarms can invalidate conformity. • Only qualified personnel may alter controller parameters affecting emission limits. --- Practical guidelines 1. Keep a paper or digital copy of all parameter pages in the control cabinet. 2. Use screened cable for ΔP sensor tubes and keep 20 s if the fan reaches speed slowly—prevents “CLEANING OFF” flashes. 4. After any reset, manually trigger one cleaning cycle MENU ➔ SERVICE ➔ MANUAL PULSE to confirm valve and air-line integrity. Potential challenges & remedies • Keypad unresponsive → membrane damaged → connect PC via RS-485, use Nederman ConfigTool. • RUN contact closed but still “CLEANING OFF” → check 0 V reference; both terminals must share the same 24 V DC common. --- Possible disclaimers or additional notes • Controller firmware prior to v1.30 has rare EEPROM corruption after brown-outs; update if spontaneous mode changes are observed. • Parameter names can differ slightly between regional variants DFC-08M-EU vs DFC-08M-US. --- Suggestions for further research • Evaluate switching from Timer to ΔP cleaning to reduce compressed-air consumption by ~35 %. • Investigate Nederman Insight or third-party IIoT modules for predictive maintenance. • Review EN 12779 and NFPA 664 for dust collector interlocking and alarm handling best practice. --- Brief summary “CLEANING OFF” merely means the DFC-08M’s pulse-jet cleaning is inhibited. • Re-enable it via the keypad set CLEAN = ON or restore the external RUN contact. • Clear any latched alarms, then cycle power if required. • Verify parameters and external wiring; follow safety rules. Once the enabling condition is present, the display reverts to ΔP or timer information and the solenoids begin pulsing, confirming a successful reset.

Nederman DFC-08M "CLEANING OFF" Status – How to Reset Pulse-Jet Cleaning

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