Australian Standard 1680.1-1990 Interior Lighting recommends that the lighting of an Office environment be arranged to give between 300 to 750 lux on the task surface. As with all lighting schemes, this illuminance will gradually decline from installation, due to:
The accumulation of dirt on the lamp
The accumulation of dirt on the luminaire (housing and reflector)
Lamp life
Regular maintenance to the fitting interior, the reflector and the lamp will extend the efficiency of the design.
Initially aFREEsurvey of your lighting system will be carried out. This will include an assessment of the age of the installation, as well as the quantity, location, and the type of fittings installed. Lux level readings will also be taken. This information will enable us to advise you of the current status of the system, and allow us to form a proposal for a programme of the maintenance measures necessary to maintain it to its maximum efficiency.
A typical programme for an office installation of standard recessed modular fittings, of 5years standing that has received little or no maintenance would be:
Initial Survey Preparation of report
Start Cleanse of fitting and reflector Swap out of lamps and starts
+12 Months Cleanse of fitting,reflector and lamp
Spot replacement of any individual lamp failures