Half-yearly procedures

Observe that the self-contained emergency, luminaires and EXIT signs function satisfactorily. Replace any defective lamp.

Annually procedures

(a) Operate the self-contained emergency luminaires and exit signs from the battery supply until extinguished due to operation of the automatic low voltage cut-off device. Investigate and repair or replace any luminaire which fails to operate satisfactorily.
(b) Clean all light-emitting and/or reflecting surfaces.
(c) Replace any defective lamp.

Battery Replacement

The replacement of batteries in self-contained emergency luminaires and exit signs shall be carried out in accordance with the following requirements :

(a) When more than one battery is utilized the complete set of batteries shall be replaced;
(b) Batteries removed from one luminaires shall not be used as replacements in another luminaire;
(c) Replacement batteries must all be of the same type as originally installaed or equivalent.

Definition

There are three main types of emergency lighting in the range :

Non-maintained : Luminaires containing one or more lamps which operate from the emergency supply only upon failure of the normal AC supply.

Maintained : Luminaires containing one or more lamps which operate from the normal AC supply or from the emergency supply at all times.

Sustained / Combined : Luminaires containing two or more lamps, at least one of which is energised from the emergency supply and remainder from the normal AC supply.

Luminaire

A general term for a complete lighting unit. It includes the housing, the reflector, lens and lamps.

Luminance (cd/m2)

The light emitted from a unit area in a specific direction is called 'luminance' and is measured in candelas per square centimetre, which indicates how bright an object actually appears, and this may be an illuminated area or the area of a source of light. The luminance of a square determines how bright that surface actually appears. One candela per square.

Lux

The unit of illuminance (illumination). It is the unit of measurement for the incident light arriving at a surface.

Law of Illumination

Inverse square law E=I/d2
where E is illumination in lux, I is luminous intensity in candelas, and d is distance of source o surface being illuminated.

Approvals And Compliance

All Emergency & EXIT light fixtures are manufactured in accordance with current Singapore Productivity and Standards Board (PSB) standards and practices. Further information, including PSB test reports and certificates, may be obtained by contacting SAMCOM Electronics Pte Ltd

Tel : (65) 6744 1100
Fax : (65) 6744 1114