False Or Nonexistent Beacon Alarm (Rf); No Red Strobe Operation - TWR Lighting E-1DB2 Manual

4.3.5
4.3.6
M.E-2009.E-1DB2
3/25/07 – rev. 5/28/09
E-1DB2 CONTROLLER
4.3.4.2 Check relay K7 coil for an open condition. Normal resistance
should be around 2K ohm. If coil is open, replace K7.
4.3.4.3 The time delay between an actual failure and the point where the
relay trips is pre-set at the factory or about nine (9) seconds. This
delay period can be tested by placing the control board (PCB #1)
test switch to "ON."

False or Nonexistent Beacon Alarm (RF)

If alarm trips when the system appears to be working normally or fails to
show an alarm when there is an obvious failure, check relay K8 coil for an
open condition. Normal resistance should be around 2K ohm. If coil is
open, replace K8.

No Red Strobe Operation

4.3.6.1 Check if switch SW2 is on. If switch is off, turn switch to the on
position (upward). If okay, go to the next step.
4.3.6.2 Turn switch SW1 to the on position (upward). On the breaker at
the service panel to the lights, turn off then back on. If the
beacon comes on then the unit fail-safes back to the white back-
up mode of operation, then replace the red mode flashtube.
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