Instructions for luminaire´s malfunction inspection
First inspection measures if the luminaries don´t light up or luminaire that is equipped with electronic driver don´t work properly.
1. Check that the voltage comes to the luminaire. Check the magnitude of voltage by measuring it. When you have a luminaire that is equipped with controllable electronic driver, check also the driver´s magnitude which is measurable (analogous 1-10V DC). Remove the control circuit and check whether the light is fully on (100%).
2. Always switch off the voltage so that it´s safe to do other malfunction inspections. In luminaire that is equipped with controllable electronic driver, the control circuit must be disconnected.
3. Check that the luminaire´s wattages and types correspond with the marking that is on the rating plate. Check also that the luminaire driver´s wattage markings correspond with the wattage markings on the rating plate.
4. Inspect that the lamps are properly in their brackets (lamp is rolled over or pushed into its right position). Check also the lamp brackets and make sure that the lamps have good contact with them (brackets are well attached into the luminaire). Delete dust, dirt, grease etc. when necessary. Take notice that some luminaire types might have restrictions over positions.
5. Change lamps if the old-ones are nonflammable but still noted as intact (even a new lamp can be defective) and switch voltage. When you have a two-lamp luminaire you must change both.
6. If the lamps don´t light up, switch off the voltage and check wires so that there won´t be any loose joints in the luminaire´s wiring. In addition, make sure that the insulation has been taken off from the connector´s contact surface of conductors. Often blacken or soot shows the sparking loose joints.
7. Check that the couplings correspond with the schematic instruction that is on top. Pay attention that the safety lights´ coupling differs from ordinary.
8. Switch off the voltage input to the driver for about 20seconds and then switch back on. Electronic drivers are usually designed to switch off when they notice a defective lamp in the lamp circuit (point 5). The situation is same with driver when the lamp isn´t rolled over to the correct position (point 4) or lamp circuit has a bad touch (point 4 and 6). Not all different manufacturer´s drivers are able to recognize the new lamp after changing the false one without switching off the voltage.
9. If you´ve done all those previously mentioned inspection measures and still the lamps don´t light up or work correctly, contact to the company who has installed/delivered the luminaries and report the problematic luminaries´ type markings, driver´s type marking and batch number and also lamp´s code markings.
10. If the luminaire´s control system doesn´t work as planned, contact to the company who has installed/delivered the luminaries and control system and report the used control system´s type and components, all luminaries that have been used in this system, transformers, problematic luminaries´ type markings, driver´s type marking, batch number and lamp´s code markings.