Old Type 1 systems predate NZS 4512 as we know it and NZS4512:1981, also known as Type B systems from NZS2211:1968.
The minimum testing for NZS4512 all version is
monthly. NZS2211:1968 has Type B, Maintenance being
“not greater than the period of time for which the system remains capable of
operation when disconnected from mains supply, or monthly, whichever period is
the shorter” so unlikely to be more than monthly.
The level of technical ability required is
very low, an owner would be able to do the monthly testing with minimal
training.
A helpful suggestion is to have spare batteries on site in case the are needed. Usually these are the 6v lantern dry
cell batteries.
