By tightening the activating screw, the gas generator drops into the electrolyte fluid where it starts an electrochemical reaction that builds up pressure (up to 4 bar/ 58 psi) and causes the piston to move forward. The lubricant is continuously injected into the lubrication point.

When the lubricant cartridge is empty, the piston becomes clearly visible in the discharge indicator cap, showing that the lubricant has been fully discharged. The lubrication period is determined by different color activator screws (1, 3, 6, or 12 months).