NC-CylinderElf-IV-A Filter Replacement

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Proper NC-CylinderElf-IV-A Filter Replacement​ becomes necessary when printouts show banding, nozzle dropouts, or ink pressure turns unstable—classic symptoms of a clogged filter in the ink supply path. The NC-CylinderElf-IV-A runs a negative-pressure ink system where inline filters trap particles and debris before they reach the Ricoh GEN6×4 printheads. A saturated filter restricts flow, starves the printhead, and degrades 360° rotary print quality on tumblers. Most UV printer manufacturers recommend replacing ink filters every 3–6 months depending on ink type and usage . Swapping in a genuine Nocai-matched filter restores clean ink delivery and protects the printhead. Because the procedure involves the ink circuit, it should be performed carefully and, ideally, under the guidance of your local Nocai distributor.

Preparation

Power off the printer and disconnect the mains cable. Wear nitrile gloves and place absorbent paper plus a small waste container nearby. You will need: a new genuine filter matched to NC-CylinderElf-IV-A, needle-nose pliers, a camera or smartphone to photograph the current installation, and the user manual. Before ordering, confirm the filter model, micron rating, connector style, tube size, flow direction, and installation position against the old filter label.

Removing the Old Filter

Locate the filter in the ink supply path—commonly installed before the printhead or between the sub-tank and ink outlet. Photograph its orientation and tube routing. Using needle-nose pliers, gently loosen the fittings and disconnect the ink tubes. Remove the old filter. Butterfly-style filters typically have in/out ports and are not directional, but always verify against your recorded photos.

Installing the New Filter

Inspect the new filter to ensure the model and micron rating match the old one. Connect the ink tubes to the new filter using the same port configuration captured in your photos. Tighten the fittings with pliers—secure, but do not over-torque to avoid cracking the compact body. Route the tubes neatly along the original path.

Purging and Leak Check

Reconnect power and turn on the printer. Enter the maintenance menu and run the ink supply or purging function to expel air from the new filter and lines—air trapped in the filter will otherwise cause nozzle dropouts and image defects . Watch for steady, bubble-free ink flow. Inspect all fittings for leaks. Once purging completes, run a nozzle check—all channels should fire fully. Print a test pattern to confirm stable ink density. When ink flow is clean and prints are defect-free, the NC-CylinderElf-IV-A Filter Replacement​ is complete and the printer is ready for production.

Post-Replacement Care

Check the new filter and fittings for leaks during the first hour of operation. Schedule the next filter replacement in 3–6 months based on ink consumption. Record the replacement date and filter model for maintenance tracking. Note that the one-year maintenance warranty excludes ink-related parts, and using non-Nocai ink may affect after-sales support.