The VOOL charger needs no routine maintenance. Its enclosure is rated IP55 for outdoor use, and the internal parts sit inside a further enclosure, so there is nothing to service, lubricate or replace on a schedule.
Wiping the outside occasionally with a dry cloth keeps it looking good. Do not use a pressure washer or direct a jet of water at it.
If the charger stops working or is damaged, contact the reseller you bought it from, or email us at [email protected] with the serial number and a description of the problem. See also Does the charger come with a warranty?
The VOOL LMC has its own short maintenance note — see LMC Maintenance.