High Maintenance usually means regular, preplanned, and often time-consuming actions relating to serviceability. This level may require specially trained technicians and the frequent need of replacement parts or extensive labor. This level is not usually consumer friendly.
Low Maintenance is usually event oriented and associated with consumer actions and is much less time consuming than high maintenance.
No Maintenance is, as far as I am concerned, non existent and when advertised as such, should raise a red flag.
Most manual and electronic storm shutters are designed to be “Low Maintenance.” This usually means simply: keep them clean and operate them properly. This does not mean you need to get outside with a scrub brush and soap. It does mean, however, that the shutters need to be kept free of foreign material such as sand/salt buildup, insect, bird and rodent nests, etc. This is accomplished by rinsing periodically with a water hose, under normal household pressure. This helps to keep these buildups from effecting the operation and appearance of the shutters. Do not use a power washer or harsh chemicals. Periodic rinsing will also help protect the painted surfaces from the ravages of our coastal environments as well as perils inland.
When shutters have been subjected to a storm, hurricane, or other adverse weather, it’s always a good idea to rinse them off under normal household pressure before raising them. Care should always be taken not to spray water into any electrical connection.
Do not lubricate roller shutters. Only outside, manual operators need to be lubricated and only with a quality marine lubricant. On accordion shutters it is advisable to keep the lock/handle mechanism lubricated. The rollers at the top of the accordion shutters can be kept in proper working order by rinsing and application of a light lubricant to the axles for the glide wheels. When operating electronic storm shutters it is advisable to keep the operating limit switch in the neutral position when the shutters are raised or lowered to their desired height. Keeping the limit switch engaged can cause the motor to continually run and potential burn out of the system. Keep children away from the shutters during operation and do not allow them to play with the operating control system.
Maintenance is a “common sense” issue which can help you to avoid costly repairs.