How to Replace Tank Tubes in Epson L1800 and 1390 Printers

Replacing Tank Tubes in Epson Printers: What You Need to Know

1. OEM Tubes for the Capping Station and Pump
   
   • The tubes inside the pump and those connected to the capping station are specific to Epson's original equipment manufacturer (OEM). Unfortunately, no aftermarket replacements are available for these tubes, as they must meet precise specifications to function correctly with the pump's mechanism. Using non-OEM tubes in these locations may result in improper suction, leading to ink flow problems or clogs.
2. C3 Tubes for External Use
   
   • If you need to replace a tube outside the pump, such as those connecting to the external ink tanks, you can use C3 tubing and a C3 connector. These aftermarket solutions are compatible with Epson printers and can handle the necessary ink flow without issues.
3. Inspecting the Damage
   
   • Please carefully examine the damaged tube to see if it is part of the pump system or an external connection. If it's an external tube, replacing it with C3 tubing is straightforward. However, if the damage involves the pump, you must use the OEM part to ensure proper operation.
4. Where to Source OEM Tubes
   
   • OEM tubes are typically sold in ways other than standalone replacement parts. Your best option is to salvage these tubes from another compatible printer or purchase a replacement capping station assembly, which includes the tubes.

Tips for Replacing Tubes

• Please handle with Care: When you replace any tubes, carefully hold the connectors and pump system to avoid further damage.
• Flush the System: After installing new tubes, it’s a good idea to flush the ink system to remove any air bubbles or debris.
• Regular Maintenance: Periodic maintenance of your printer’s ink system can prevent future issues like clogs or tube damage.