/ Ci4000 / Ci5000 Weather-Ometer
®
Service Guide Doc. No. 07-7030-00 Rev. 0
38
5.0 TROUBLESHOOTING PROCEDURES
5.2 Xenon Lamp and Irradiance
Control Malfunctions (cont.)
5.2.6 Troubleshooting Procedure –
Lamp Ignition Failure (Ignitor)
1) Ensure that the xenon lamp is properly installed
and that the ignitor lead is firmly secured to the
lamp electrode. Also ensure that the lamp lead
connection to the ignitor terminal is secure and
free of corrosion.
2) Confirm that the Xenon Lamp and Ignition
circuit-breakers are turned on.
3) Check for messages on the Data Panel MAIN
page 1 Messages display.
A) Check the CS-6 lamp cooling system
(Sec. 5.5) if one of these messages appears:
Lamp Water Temperature High
Lamp Water Flow is Low
B) If the message “Chamber Temperature is
High” is displayed, reset the chamber safety
thermostat (S4) inside the electronics drawer.
Press the red reset button on the thermostat.
4) Initiate standard test no. 1 to attempt lamp
ignition.
5) If the ignition start pulse is audible (up to 4
attempts), but the lamp will not ignite, the problem
is either the lamp itself or low lamp-circuit voltage.
A) Install the calibrated reference lamp and
initiate the test. If the lamp lights, then the
previously installed xenon lamp is
malfunctioning. Examine it for damage,
burner tip and socket damage or corrosion.
Check the burner age as recorded on the
Xenon Burner Warranty Log card. The lamp
may be at the end of its life (1200 hours or
more).
B) If the calibration lamp will not ignite,
measure line voltage to the instrument and
Figure 5.2 – 8 Chamber Overtemperature Thermostat
S4
Figure 5.2 – 6 Ci4000 Xenon Lamp Ignitor
Figure 5.2 – 7 Ci5000 Xenon Lamp Ignitor
Figure 5.2 – 5 Lamp Ignitor & LS-8
Ignitor
LS-8
Light
Monitor