Section 4 • Repair Procedures
REV A
Part No. 116478
AL8000HT Light Tower
4 - 3
September 2008
Time
Line Voltage
Initial ignition
415V AC
30 seconds
412V AC
1 minute
413V AC
2 minutes
416V AC
5 minutes
246V AC
10 minutes
251V AC
Note: If the voltage reading remains high during
warm up, check for loose or broken wire
connections OR the lamp may be faulty.
Note: The voltage readings provided in the chart are
averages; voltage on your machine may vary.
How to Check the Open Circuit
Voltage
Correct line voltage at the lamp socket is essential
for proper operation of the lighting system.
Electrocution hazard. Exposure to
high voltage electrical wires or
electrical current will result in death
or serious injury. Remove all rings,
watches and other jewelry. Turn off
all power when not needed for
testing. Use extreme caution when
working with high voltage electrical
components.
1 Turn off all machine power.
2 Locate the electrical cable of the lamp to be
tested. Disconnect the cable from the junction
box attached to the light bar.
3 Set a voltmeter to read 0 to 750V AC. Insert the
leads of the voltmeter into pins A and B of the
electrical connector socket at the junction box.
4 Start the engine.
5 Turn the appropriate circuit breaker light switch
to the "ON" position and observe the reading on
the voltmeter. Refer to the following chart.
Open Circuit Voltage
375V AC to 465V AC
Specification
Note: If there is no reading on the meter. Repair or
replace the capacitor, ballast or wiring.
LIGHTING
c
b
a
