The cost of a planned maintenance visit is trivial against a day of lost trade, spoiled stock and an emergency call-out rate. For food businesses it is also part of demonstrating due diligence to environmental health.
Grease traps need their own schedule — monthly for busy kitchens — and every service should be documented with a signed job sheet retained for inspection.
A planned programme also spots deterioration early, which turns a future excavation into a patch liner.