Cooper Industries Inc.
Crouse-Hinds Division IF 1551
PO Box 4999, Rev 1
Syracuse, New York 13221 • U.S.A. New 01/08
Copyright© 2007, Cooper Industries, Inc.
Section 3 — Maintenance
and Troubleshooting
Maintenance
This equipment requires no scheduled
maintenance although the circuit boards
should be kept free of accumulated dust.
Brush as necessary.
Do not use compressed air for cleaning
this equipment.
Clean the printed circuit board connectors
when necessary — use a contact cleaner
recommended for electronic circuit
components only. Do not polish with any
kind of abrasive material.
Circuit boards, when not installed in the
equipment, should be kept in antistatic
bags or containers.
Troubleshooting
Good observation of the behavior of the
system often leads directly to a faulty
component or other abnormal condition.
Many abnormal symptoms observed at the
controller may originate at some other part
of the system, such as the photoelectric
control units or the beacons.
The following tables may help locate the
cause of a problem: Table 3-1 is a list of
observable symptoms; Table 3-2 relates
symptoms to possible causes.
Troubleshooting Hints
Failing to Switch State in AUTO
Mode
The PEC ALARM should be on if the
photocell failed to switch state. If possible,
swap the photocell with one known to be
operative.
Switch the Mode Selector Switch through
the manual modes and see if the structure
lights follow the intensity indicated by the
switch position. It they do, the trouble is
likely the photocell. Note that some lights
may be difficult to see in bright daylight.
Erratic or Confused Tower or
Structure Light Operation
Nearby radio transmitters or radar may
cause radio frequency interference on
control and monitor lines or within the
lights or controller. Also, check power line
phasing on 3-phase power systems.
Try swapping the PCB100 Control Board
with a PCB100 Control Board known to
be in good condition.
Beacons
If any beacon is not flashing in the correct
mode or is out of sync with its position or
other beacons, check the communication
cable to that beacon. Check that the sync
LED on the PCB1 board is flashing once
every 1.5 seconds (non-catenary),
matching the output of the controller sync.
Check that the DIP switches on PCB100
conform to the setup of the structure
lights.
LED Displays
Look at and analyze the LED displays on
the front panel. LEDs indicate manual
operating modes when you use the Mode
Selector Switch. LEDs in the Tier/Beacon
Display Window indicate failed beacons.
The Display switch on PCB100 shows
previously failed beacons in the
Tier/Beacon Display Window. The Clear
switch on PCB100 resets these stored
failures.
