Step 1: Close the valve.
Step 2: Disconnect the upper part of the filter, seal the filter and the disconnected hose with paper to avoid ink dripping.
Step 3: Disconnect the data tape from the head.
Step 4: Unscrew the screws to release the head.
Step 5: Pour a thin layer of UV Wiping fluid into a cup, place an antistatic cloth on the bottom and place the head on top of the cloth. The cleaning liquid should NOT exceed the metal part of the head, let it soak for 24 to 72 hours.