/ Ci4000 / Ci5000 Weather-Ometer
®
Service Guide Doc. No. 07-7030-00 Rev. 0
37
5.0 TROUBLESHOOTING PROCEDURES
5.2 Xenon Lamp and Irradiance Control Malfunctions (cont.)
5.2.5 Troubleshooting Flow Chart - 2-Sun Irradiance Considerations (Ci5000 only)
2) Check for rack speed
of 10 RPM.
Rack at
1 RPM
No
continuity
Relay K14 or A14 rack
speed controller is
malfunctioning.
3) Check for continuity
between K14 relay termi-
nals K14-3 and K14-4.
Continuity
Check for 0 volts between
ground and relay K15
terminal K15-3. If voltage
present, K15 or K14 is
stuck closed. Replace bad
relay.
4) Check for 24Vac at
K14 coil terminals K14-1
and K14-2.
Voltage
present
No voltage
Replace relay K14.
5) With K14 operating
properly, check for volt-
age between ground and
K4 relay terminal K4-3.
No voltage
present
Voltage
present
Relay K4 is o.k.
Check for 24Vac at K4
coil terminals K4-1 and
K4-2. If no voltage is
present, replace K4. If
voltage is present, re-
place PLC3 Logic Output
module (see Sec. 5.13.5
first).
1) Create and initiate a
custom 2-Sun test.
If A8 LED on PLC3 is
on, replace PLC3. If
LED is off, download
software to PLC. If
operation not restored,
replace PLC3. See
Section 5.13.5.