INS154-4 7
When the outer cover is replaced, and the tamper circuit is closed, the LEDs will
alternate rapidly, confirming that the tamper circuit is secure and signalling that S/A
on tamper will be re-enabled within 2 minutes, after which the LEDs will alternate
slowly to signal normal operation. If the tamper circuit is re-opened within the 2
minute period, then Hold-Off mode will be restored.
Summary of LED States
Slow flashing LEDs Normal operation
Left LED flashing only Hold-Off active, tamper circuit open
Right LED flashing only Hold-Off active, tamper circuit closed
Fast flashing LEDs Hold-Off active but will cancel within 2 minutes
If Hold-Off mode is invoked but the tamper circuit is not opened within 15 minutes
then Hold-Off will automatically start to cancel, indicated by the LEDs alternating
rapidly for a further 2 minutes.
For safety reasons the strobe is disabled during Hold-Off mode.
Hold-Off mode is immediately cancelled when the sounder is activated from the
control panel.
3. Safety
INSTALLATION AND MAINTENANCE BY
QUALIFIED SERVICE PERSONNEL ONLY
All strobes produce hazardous voltages. However, the unit includes dual circuit safety
interlocks. When the strobe is de-activated it invokes a final flash to discharge the
high voltage. Back-up circuitry guarantees discharge of the high voltage within 3
minutes.
For your own safety be sure to observe the following precautions
when installing and servicing the unit:
• NEVER remove the cover when the strobe is flashing
• WAIT 3 minutes after the strobe stops flashing before removing the cover
• AVOID touching the part of the PCB labelled “Warning High Voltage”
The unit incorporates software which disables the strobe whilst the tamper switch
remains open. This is a safety feature and cannot be disabled.
The piezo drive produces high voltages when the siren is sounding. While not
directly hazardous, these voltages will cause discomfort and should be avoided,
particularly when using tools or a ladder.
The piezo transformer TF1 will be hot during and after sounding. While not directly
hazardous, touching it when hot will cause discomfort and should be avoided,
particularly when using tools or a ladder.
To Next Page
Loading...
Need help?
General
