Luminaire installation

Familiarise yourself with the supplied installation instructions and follow them during installation.

What should be done if… 

1. The fluorescent lamp does not ignite or the luminaire stays in standby mode?

  • First check that there is a voltage supply to the luminaire and that there are no short circuits.
  • Check that all the luminaire’s fluorescent lamps are working.
  • If the mains voltage is too low the fluorescent lamp will not ignite. Do not continuously under run a luminaire, as this can damage the HF-ballast.
  • Component properties can change drastically in the cold, to a point where the HF-ballast no longer functions reliably. The fluorescent lamp doesn’t ignite safely, or the HF-ballast immediately enters standby mode. Check the luminaire functions at room temperature.

2. The fluorescent lamp flashes, does not ignite or goes out haphazardly?

  • Check if there is a fluorescent lamp in the luminaire with the wrong output or wrong HF-ballast.
  • Continuous over voltage. Measure the luminaire’s mains voltage.
  • A conductor is disconnected or is loose. Check the connections.
  • In cold surroundings both the HF-ballast’s and the fluorescent lamp’s properties change, to the point where the fluorescent lamp cannot continue to burn.
  • Internal wiring between HF-ballasts and lamp holder too long.

3. The fluorescent lamp’s cathode glows, but the lamp doesn’t ignite?

  • Mains voltage too low. Measure the voltage on the luminaire.
  • The starter in a luminaire with a conventional ballast could be defective.
  • There is a fluorescent lamp in the luminaire with the wrong output/type or wrong HF-ballast.

4. The fluorescent lamp’s ends darken or the cathodes flash?

  • Check that the fluorescent lamp is intact as set out in point 1.
  • A conductor is disconnected or is loose. Check the connections as set out in point 1.
  • It is recommended for some HF-ballasts intended for dimming, that the fluorescent lamp is burnt in for 100 hours before dimming is allowed.
  • Note that it is perfectly normal for a fluorescent lamp’s ends to darken after a long period of use, when it approaches the end of its normal service life.

5. There is a reduced fluorescent lamp life?

  • Is the luminaire switched on regularly during the day? A fluorescent lamp’s nominal life span is based on a three hours burning interval (eight ignitions per day). If, with a conventional ballast you have significantly more ignitions, the fluorescent lamp’s life span is shortened appreciably.
  • There is a fluorescent lamp in the luminaire with the wrong output/type or wrong HF-ballast.
  • A bad contact in the power circuit can shorten the life span of the fluorescent lamp.

6. The luminaire gives less light than normal?

  • The mains voltage is too low. Measure the voltage on the luminaire.
  • When used in the cold the fluorescent lamps luminous efficacy decreases greatly, at the same time, the HF-ballast’s properties change.

7. The earth-fault breaker or fuse trips when the lighting is igniting?

  • There could be an earth fault or short circuit in the luminaire group.
  • Too many luminaires in the same circuit.
  • A measurement instrument connected incorrectly to the power circuit can trip an earth-fault breaker.

8. There is a problem with the dimming system?

  • Always check before connecting that the luminaires are intended for the control unit used.
  • Connections for 1–10 V control circuits are marked (+) and (-). Check the polarity.
  • If the number of luminaires is large or the control circuit is long, a signal amplifier in the control circuit may be necessary. Control circuits for digitally controlled HF-ballasts have a maximum length of 250 m.