Servicing: shut down or winterizing, if you do not use your spa for long periods of time Spapool recommends that you drain your hot tub.
Adding a cleaning agent to the water that removes grime build up that attaches itself to the inner workings of your hot tub.
Shock water with a sanitizer.
Filters removed, cleaned and checked for damage.
Drain down, clean surface, vacuum any plumbing dead legs like the drain pipe work, jets and air track
Release all unions and vacuum water from all components including heater and the wet ends of all pumps
Turn electricity supply to hot tub off.