Chapter 2: Operation
ZP3-ECU Extinguishing Control Unit User Guide
15
4
OFF
When switch 3 is OFF and switch 4 is ON the user must hold down the button
before the delay period has timed out. If the button is released before the time out
period the ECU timer continues with the count down and releases extinguishant at
the end of the countdown. If the button is kept down for a longer period e.g. 50
seconds, extinguishant release is held off until the button is released,
extinguishant release is then immediate. There is no time limit on the hold off time
when using this mode.
