Wiring Diagrams & General Assembly - Francis Searchlights Voyager 2 User Instruction & Installation Manual

7- Fault Finding
All fault finding must be conducted by a competent person or qualified Electrical Engineer.
Please refer to the following table for the trouble-shooting of Xenon lamps.
Fault
◼ Wrong Polarity
◼ Cap overheated
◼ Cap temperature above
230°C
◼ Arc unsteady
◼ Bulb draws in air
◼ Glass erosion on fused
quartz bulb
◼ Electrodes damaged
◼ Premature blackening
◼ Asymmetrical blackening
of lamp (in horizontal burn-
ing position)
Cause
◼ Lamp incorrectly fitted
◼ Faulty wiring
◼ Faulty contacts
◼ Cooling equipment defec-
tive
◼ Lamp operated outside
current control range
◼ Magnetic stabilisation for
horizontal operation defec-
tive
◼ Crack in graded seal
caused by overheated cap
◼ Maximum cap temperature
230°C
◼ Lamp operated outside
current control range
◼ Lamp service life exceed-
ed
◼ Current ripple too high
◼ Auxiliary mirror incorrectly
adjusted
◼ Lamp operated too long in
same position
Remedy
◼ Anode (large electrode)
must always be on top in
vertical burning position
◼ Check polarity, transpose
connections if necessary
◼ Check terminals, tighten or
renew
◼ Check cooling equipment
and replace if necessary
◼ Correct current setting
◼ Check magnetic stabilisa-
tion
◼ Check terminals - tighten
or renew
◼ Correct current setting
◼ Check meter
◼ Have power supply in-
spected
◼ Adjust auxiliary mirror
◼ Turn lamp through 180°
after half service life