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3.3.1 Automatic BIT Test
Check that the indicators show normal conditions. See Powering Up on page 31.
3.3.2 Manual BIT Test
Important : If the function setup Alarm BIT and/or Auxiliary BIT are set to Yes (default
No ), the Alarm, Auxiliary Relay and 0-20mA outputs are activated during a Manual BIT.
Therefore, automatic extinguishing systems or any external devices that may be activated
during BIT
must be disconnected.
Ø
To perform a Manual BIT:
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Verify that the detector is Normal Mode.
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Initiate Manual BIT. The results of successful and unsuccessful
manual BITs are detailed in Table 12 and Table 13.
3.3.3 Testing with Fire Simulator Model 20/20-310
The Fire Simulator Model 20/20-310 can be used to simulate exposure of the detector to a
real fire condition. The detector is exposed to radiation at the required detection level. As
a result, the detector will generate a Fire Alarm signal. See
Long Range IR3 Fire
Simulator on page 44 for more information.
Important: If the detector is exposed to a fire simulator, the Alarm and Accessory
Relays and 4-20mA are activated during the simulation. Therefore, automatic
extinguishing systems or any external devices, which may be activated during this
process, must be disconnected.
Ø
To perform Fire Simulator Test:
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Power up the system and wait up to 60 seconds for the detector to turn to a normal
state. The Power LED turns on.
30
Aim the Industrial Scientific Fire Simulator Model 20/20-310 at the target point of the
detector (Figure 14), in a way that the radiation emitted by it is facing directly towards
the detector. (See
Long Range IR3 Fire Simulator on page 44).
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Press the operation button once. After few seconds, a successful test shows the results
shown in Table 21.
Table 21: Results of Successful Fire Simulator Test
Component Action Notes
4-20mA Turn to 15mA For a few seconds and then return to 5mA
Alarm Relay Activated for a few seconds and then returns to Normal
Auxiliary Relay Activated for a few seconds and then returns to Normal
Fault Relay Remains active
during the test
LED Red, steady
The detector is now ready for operation.