Accepting and Reseting Alarms
For most of its operating life the Tocsin 700 control panel and associated sensors will monitor for
whichever hazard it is configured for. The only requirement from the plant operator is to have the
system regularly calibrated, typically every 3 or 6 months depending on the nature of the gas
hazard. This section describes what happens at the control panel should the system detect a hazard
and go into alarm and how to accept the alarm and reset the control panel.
CH1 AL 1 TOTAL 2 OF 4
CH1 AL 1 TOTAL 2
CH1 AL 1
CH1 AL 1 TOTAL 2
BOILER 1 AREA 3
PRESS RESET ALL
BOILER 1 AREA 3
Step 1. The panel detects a gas hazard
Step 2. Operator Accepts The Alarms
Panel indicates which channel is in alarm
Panel indicates which alarm level has tripped
Panel indicates how many alarms in total have tripped
Relay outputs will activate dependant on the
system configuration
Alarm outputs (beacons and sounders) are active
if fitted.
The user programmed description for the sensor is displayed
Pressing the jog wheel will accept the indicated alarm. If there is more than one alarm tripped then
the next alarm is indicated on the display. Note that the total number of active alarms is indicated in
the top right of the display.
Once all alarms have been accepted the sounder output from the panel is de-activated, if a sounder
has been fitted it will silence. The relay outputs associated with the active alarms will still be
energised until the gas hazard has been cleared and the panel reset.
Once all active alarms have been accepted the display will read as follows:
Pressing the jog wheel at this stage will reset the system. This de-activates any energised alarm relays
depending on the panel user alarm programming and the 'beacon' output. If the gas hazard is still present
then it will not be possible to reset the alarm.
WARNING
It is important to have a site health and safety
response in place in the event of alarm activation.
Gas detection systems are an indication that a
problem may exist but should not be relied on as a
f a i l s a f e s y s t e m . .
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