A functional test is required per month a full 1 or 3 hour duration test is required annually to regs but good practice to test 1/2 duration at 6 months also
Log book and maintenance records of tests undertaken. And repairs needed to be recorded
Daily: check the charging indicators are 'on' on all em units
Monthly: functional check (ie turn off supply and ensure all units light)
6 monthly: 1 hour functional test
annually: 3 hour functional check
All tests should be recorded. Some manufacturers do downloadable check sheets and log forms. I think you can buy log books, but am not sure where from. It'd be easy enough to knck up a form in Word or Excel.
The log should also record any repairs carried out.
To my mind a weekly check of the charge light would suffice. Easy in a small office, but in a large place it could be a full time job checking them every day.
Site im at have fittings that they KNOW have been dead for months but nothings been done so im going to try and force the maintainence companys hand and get them a system that isnt half crocked.