Ampac Orbis, Product Manual, Page: 18 / 22

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MAN1509-4
ORBIS AUSTRALIAN PRODUCT GUIDE
10 Commissioning made easy
Orbis has been designed with a number of features that make commissioning easier and hence save
time.
10.1 StartUp
When Orbis detectors are powered up they automatically enter a timed 4 minute phase known as
“StartUp”. After this they revert to normal operation. If the detector is reset, ie, if power is
disconnected for one second or longer, the detector will always enter StartUp for the first four
minutes after power has been restored. The detector LED flashes red once a second to indicate that
it is in StartUp.
10.2 What StartUp indicates
StartUp is used to check that the positive and negative cables are connected in the correct polarity
and that power has been applied to the detector. If this is the case, the LED will flash red once a
second.
StartUp will not check whether the IN+ and OUT+ connections have been transposed. This is not a
problem if standard bases are used as the detector will operate normally.
If, however, diode bases are used and a detector is removed from a base with transposed positive
connections none of the detectors beyond this point will operate.
10.3 FasTest®
Orbis detectors incorporate a test facility known as FasTest®.
In normal operation Orbis smoke detectors do not change to the alarm state at the first sensing of
smoke. If they did, they could be too sensitive and cause false alarms. Algorithms determine the
point at which the detector changes to alarm.
This could slow down routine maintenance during which detectors are tested by means of smoke or
a smoke-simulating substance.
In order to avoid such a problem Orbis detectors have FasTest, a facility which is automatically
available during StartUp and which modifies algorithms
The problem of testing is even more acute in the case of heat detectors as they absorb a great deal
of heat during testing. Orbis heat detectors also incorporate FasTest®.
In the case of heat detectors a fast test is defined as a sample which recognises a rise of 10°C within
one minute. Since sampling takes place every 2 seconds an Orbis heat detector will respond within
about 4 seconds.
10.4 Smoke or Heat Testing
Smoke or heat testing Orbis detectors is aided by the FasTest® feature. A detector will react rapidly
to the correct stimulus if applied within 4 minutes after power up.
Choose the appropriate test function on the control panel and reset the detector circuit. This should
place the detectors into FasTest®. Apply smoke or heat as appropriate and the detector should
enter the alarm state within 4 seconds. The panel may sound the alarm and reset the zone
automatically (refer to control panel’s instructions). If not, silence the alarm and reset the panel.
Repeat the procedure as necessary.
Note that the multisensor detector will respond to either smoke or heat while in FasTest®. It will not
respond to heat only in normal operating mode.
NOTE: Refer MAN3046 Ampac Detector Cleaning, Maintenance, and Functional Test
Procedures for correct equipment and methods for testing.