Section 5 • Troubleshooting
5 - 4
AL8000HT Light Tower
Part No. 116478
REV A
September 2008
TROUBLESHOOTING
TROUBLE
POSSIBLE CAUSE
REMEDY
11.Lamp will not start
e.Improper ballast
e.The ballast name plate data should
agree with the line voltage and lamp
used. If not, replace the ballast.
f.Lamp has been operating; cool
f.Switch off breaker and allow lamp
down time insufficient
to cool.
12.Lamp starts slowly (arc does
a.Defective lamp
a.Lamp may glow for an extended
not strike when switch is first
period of time. Replace after
turned on
checking voltage and ballast
13.Circuit breaker trips on lamp
a.Short circuit or ground
a.Check wiring against diagram.
startup
inspect for shorts or ground. Fix as
needed.
14.Lamp light output low
a.Normal lamp depreciation
a.Replace lamp
b.Dirty lamp or fixture
b.Clean lamp and fixture
c.Defective ballast
c.Interchange ballast plugs. If lamp
starts, replace ballast. Check for
swollen capacitors, charred wiring,
core and coil, or other signs of
excessive heat.
d.Wrong voltage
d.Check line voltage at ballast input.
Voltage should be within 10% of
e.Improper ballast
e.Check ballast name plate against
lamp data
15.Lamp colors different
a.Normal lamp depreciation
a.Replace lamp
b.Dirty lamp or fixture
b.Clean lamp and fixture
c.Wrong lamp
c.Check data on lamps and replace
as needed.
16.Arc tube discolored or swollen
a.Over voltage from power supply
b.Improper ballast
b.Check ballast name plate against
lamp data
17.Short lamp life
a.Lamp damaged
a.Check for outer bulb cracks,
cracks where lamp meets base, and
for broken arc tube or loose metal
parts. Replace as needed.
b.Improper ballast
b.Check ballast name plate against
lamp data
18.Lamp flickers or goes out-
a.Improper Ballast
a.Check ballast name plate against
intermittent or cycling
lamp data
b.New lamp
b.Under certain conditions new lamps
may "cycle". Usually after 3 tries to
start at 30 to 60 second intervals,
lamp will stabilize and operate normal
rating when operating at normal load.
Check wiring connections for voltage
loss. Check socket contact point.
a.Check voltage at ballast, for current
or voltage surges, for shorted
capacitors and replace as needed
