Atest Gaz Alpa EcoTerm XT, User Manual

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9.3 Start-up
9.3.1 Handover inspection
After performing the power supply and signal installation of the detectors, it is necessary to check and start
the installation. Checking is based on further addition of detectors (or their simulator – see below) to the
installation and checking the reaction of the control unit.
9.3.2 Checking
The verification of the correctness of operation of the installation is based on:
checking whether the control unit shows the status of "OPERATION" without the activation of the
sensors with gas,
activating the first detector with gas and checking the reaction of the control unit (it should
display "WARNING" or "ALARM" – depending on the concentration of the fed gas),
stimulation of the last detector with gas with checking of the control unit response as well as the
response of all transient detectors (depending of concentration of the test gas they should
activate their LED indicators according to the sequence provided in Table 4, respectively for
exceeding of warning 1, warning 2 or alarm thresholds),
random activation of selected intermediate detectors,
random disconnection of the detectors and checking the reaction of the control unit – it should
display the status of "FAILURE".
More information in section 9.4.
9.3.3 Start-up of the system
After performing the electrical connection and handing it over to operation, the installation is ready to
work. After performing the electrical installation, it is possible to conduct start-up and verification of the
system in accordance with the procedure below:
check the correctness of the electrical connections and the setting of the configuration switch,
power the system up. All detectors should start the heating procedure, which is indicated by
periodical blinking of the indicator LED (see Table 4). During the heating procedure all the control
unit channels that are used by detectors should report the active operation. After about 1 minute
all detectors and the control unit should report normal operation (provided that ambient air is
free of any agent that may trigger activation of any detector),
wconduct the test of the sensor operation by pressing and holding the "TEST" button located
inside the detector (see Figure. 1) until the control unit signals "ALARM". Pressing the "TEST"
button should cause the "ALARM" on the checked detector and control unit,
with pressed "TEST" button (all detectors show the status of "ALARM") conduct the measurement
of voltage on the most remote detector. The voltage cannot be lower than the minimum voltage
of power supply to the detector (see table 8). A too low value indicates an inappropriate selection
of the conductor cross-section or too low voltage of the power supply to the system,
it is recommended to conduct the reaction of the detectors with a span gas,
the test of operation should be conducted for each detector,
if the system does not work properly, it is necessary to check the correctness of connections or
contact the manufacturer,
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User Manual: POD-044-ENG R01