A: Indefinitely, but after 2–3 resets (about 50,000 pages), the pads will be fully saturated. You must replace them or install an external waste tank.
The Epson Adjustment Program is copyrighted by Seiko Epson Corporation. Distributing or using it without authorization may void your warranty. This article is for educational purposes for repair technicians and experienced hobbyists. If your printer is under warranty, request service from Epson first.
What is an adjustment program?
It's a service utility that resets the printer's waste ink pad counter after it reaches its limit (usually after ~8,000–15,000 prints). The printer will show "Service required" or blinking lights without this reset.
Using free unofficial "adjustment programs" carries significant security, warranty, and reliability risks; contacting Epson or an authorized repair service is the safest route.
(If you want, I can search for recent discussions or reputable sources about Epson L800 service tools — say "search" and I'll fetch related terms.)
Waste ink pad counter, Initial ink charge, Head cleaning, EEPROM data.