EP203 AUTOMATIC EXTINGUISHER PANEL
Approved Document No. DFU0002032 Rev 4 • EP203 AUTOMATIC EXTINGUISHER PANEL INSTALLATION MANUAL • Page 33 of 45
Test Sounder s
This sub-menu allows the testing of 1st and 2nd Stage sounder circuits by altering its state
between On, Off, or Intermittent.
1. From the Engineering menu, select Test Sounders.
2. Select the sounder circuit to be tested using the Scroll (up) and Scroll (down) buttons.
3. Press the Accept button to change the selected sounder circuit On.
4. Or, press the Accept button to change the selected sounder circuit to Intermittent.
5. Or, press the Accept button to change the selected sounder circuit Off.
6. Press the Escape button to return to the Engineering menu.
Monit or i ng
This sub-menu allows a constant monitoring voltage to be temporarily applied to the
sounder circuit, monitored inputs and extinguishing output.
1. From the Engineering menu, select Monitoring. The LCD unit displays pulsing mode
for the above circuits.
Note: Pulsing mode reduces the quiescent current of the panel but may make
troubleshooting difficult.
2. Press the Accept button and the LCD unit displays constant mode for the same
circuits.
3. Perform the necessary voltage checks.
4. On completion of voltage checks, press the Escape button and the panel will
automatically revert back to pulsing mode.
Show PSU S ta t s
This sub-menu can assist in fault diagnosing the panel’s PSU and standby battery supply.
1. From the Engineering menu, select the Show PSU Stats sub-menu. The LCD unit
displays the PSU and battery statistics (typical readings shown below):
2. Press the Escape button to return to the Engineering menu.
Note: A PSU fault occurs when the battery resistance is >500mΩ.
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