OSRAM QUICKTRONIC-M ECG for circular FL 16 mm - Manual (Page 82)

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Possible cause:
f)
Changeover times and voltage levels are outside recommended
tolerances for emergency lighting systems with changeover
between AC and DC
Remedy:
Measure the DC supply voltge and check the switchover
properties, or consult the equipment manufacturers.
Possible cause:
g)
Non-sinusoidal mains voltage or DC voltage with high residual
ripple (e.g. operation with fully electronic leading edge phase
control dimmer switch or artificial mains network/emergency
generating set)
Remedy:
Check whether the mains voltage is in the required range for the
ECG and the wave form or residual ripple in DC operation is within
the specified limit values. Dimming is not recommended unless the
ECG is expressly approved for dimming, in which case the
prescribed controls (special accessories) must be used.
Possible cause:
h)
At least one lamp has reached the end of its life owing to a increase
in lamp voltage
Remedy:
Replace the lamp (for two-lamp ECGs we recommend replacing
both lamps at the same time to keep maintenance time and costs
to a minimum)
8.5.3 Lamp goes out during
operation
Problem:
The lamp goes out during operation (at least one lamp in the case of two-
lamp units)
Possible cause:
a)
The reversible protection device in the ECG has responded during
operation. The reason may be an intensive transient mains fault
(mains voltage falls below the minimum voltage specified on the
ECG for longer than permissible). Pulses of exceptional energy
(transients) are superimposed on the mains voltage. The value of
the mains voltage exceeds the maximum recommended value (e.g.
because of a fault in the supply unit). Slow increase in mains
voltage following neutral conductor break (unbalanced load,
depending, among other things, on the mains load).
Remedy:
Disconnect the ECG or luminaire from the mains then check the
supply voltage. If such problems occur sporadically, we
recommend recording the mains voltage and/or using an
oscilloscope or memory voltmeter. The electricity supplier may
have to be consulted. Make sure that the neutral conductor is
connected properly to this luminaire and makes good contact.