Calaject piston maintenence

Maintenance by user

Replace the piston O-ring annually or if worn or damaged.

Extend the piston out. Use your fingers or a rubber tipped instrument to remove the old O-ring - do not use a metal tool. Clean the piston with a moistened clean tissue or a disinfectant wipe.

Roll a new O-ring (obtainable from Evident) into the piston groove. Coat the O-ring and piston surface with a thin layer of food-grade PTFE grease (obtainable from Evident) by using a cotton swab or microbrush. Move the piston back and forth by actuating. Wipe off excess grease with a clean tissue. IMPORTANT: Do not use other types of lubricants, especially any  containing solvents or silicone.

Repeat the described cleaning and lubricating procedure if anaesthesia fluid has leaked into the handpiece.

Regularly inspect the piston to check that it is clean.