All moving parts need to be kept in good working condition as this ensures consistent results. That is why at Invincibowl, we take smoking and maintenance very seriously. Repeated cleaning can cause surfaces to degrade. The Invincipole Maintenance Kit helps protect against increased friction by restoring function. Apply a small amount of our food-grade, non-toxic, silicone grease to ensure the device operates without any interruption and with the same quality as day one! There is no service schedule but, we prefer an application every few cleanings. We have included three replacement O-rings in our kit on the off chance you experience breakage/damage with your O-ring.