Instruction manual

80
8.5.2 Brief Glimmer Problem:
Lamp does not start but there is a brief glimmer from one or both lamp (i.e.
the protective circuit in the ECG has responded at start-up).
Same behaviour even after being off for one minute (internal reset) and
restart
Possible cause:
a) At least one lamp has reached the end of its life owing to a cathode
break or 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).
Possible cause:
b) Wiring faulty between ECG and lamp (output terminals not used or
reversed: contact problems in the holder or the terminals (e.g. wire
cross-section too small or too large)
Remedy:
Check the lamp-side wiring fo rcorrect contact. Has the lamp
connection been wired according to the wiring diagram on the
ECG? For two-lamp ECGs in particular, check that the common or
external connection is correctly wired.
Possible cause:
c) A lamp with the wrong wattage has been installed or, in the case of
two-lamp ECGs, only one lamp is installed or there are lamps of
different wattages
Remedy:
The wattage and type of lamp must correspond to the wattage and
type indicated on the ECG or the lamp/ECG combination should be
in line with OSRAM’s Indoor and Outdoor Lighting brochure. ECGs
designed for two-lamp operation must be operated with two lamps.
Possible cause:
d) The mains voltage lies outside the limit values indicated on the ECG
or in the data sheet
Remedy:
Check the voltage at the ECG and at source; check the wiring on
the mains side.
Possible cause:
e) The temperature at the measuring point of the ECG is too high (for
a brief description of the temperature at the ECG and lamp see end
of text)
Remedy:
The luminaire or site of installation should be modified to ensure
that the maximum recommended temperature is not exceeded
even in onerous conditions (high ambient temperature and/or high
supply voltage)