Epson L-4533A/L-4533AW/L-4033A/L-4033AW Maintenance Guide Inspection Procedures G Clean nip roller B. 8: Nip Roller B (1) With one hand, operate nip lever B to release nip roller B, while holding a polyester/nylon knit woven fabric dampened with the ink cleaning alcohol in your other hand. (2) Turn nip roller B while using the polyester/nylon knit woven fabric dampened with the ink cleaning alcohol to wipe off any paper powder, dust, glue and so on. 25