☛ * High traffic hydraulic elevators should be serviced at least once per month.

☛ * High traffic traction elevators should be serviced at least twice per month depending on how much it is used.

☛ * For all freight elevators, it is best to service once a month.

☛ * Industrial Rack-and Pinions should be serviced once a month except during outages which should then be performed once a week.