Atest Gaz Alpa MOD LED1, Руководство пользователя

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The architecture with a closed control loop makes it possible to connect more detectors to the control
module and to carry out the system test directly from the control unit, which is infeasible in case of an open
control loop. Details of these procedures are described in Section 8.3.
8 Life cycle
8.1 Transport
The device can be shipped in the same way as new equipment of that type. If the original package or
another protecting means (e.g. corks) is unavailable the conveyed equipment must be secured against
shocks, vibrations or moisture by means of adequate methods and material at the own responsibility of the
sender.
8.2 Installation
The control unit should be installed inside a control cabinet on the DIN35 rail or inside a terminal box. The
mounting position should be as shown in Figure 1The device must be easily accessible to authorized staff
but, if possible, access of third and unauthorized persons should be prevented. It is recommended to install
the device at an appropriate height to enable unobstructed access to the device.
If electric connections are made by means of multi-wire conductors (commonly referred to as a strand),
conductor ends must be secured by means of terminal sleeves.
When two conductors are to be connected to a single terminal clamp of the device they must be
encapsulated first within a common clamping bushing (lug) – see details in Table 3.
It is unacceptable to combine in one connector two wires which are not pinched in one cable
lug.
8.3 Commissioning
8.3.1 Test for the system with a closed control loop
The systems that include the Control Unit Module Alpa MOD LED1 collaborating with the Alpa EcoWent XT,
Alpa EcoDet XT or Alpa EcoTerm XT mutually connected within a closed current loop are capable of
executing a test of that loop upon any request of the system operator. To initiate the test please held and
depress for 15 seconds the both buttons PAMIĘĆ (MEMORY) and POTWIERDZENIE (ACK). Start of the test
shall be signalled by a short sound beep with activation of the yellow TEST indicator lamp and deactivation
of the PRACA (OPERATION) LED. Successful passing of the test by the device is indicated by activation of the
red indicator light ALARM. Testing of the system takes about 1 minute and afterwards the unit indicates
its return to the regular operation mode. Should the ALARM indicator light fails to go on it means that the
unit failed the test. If so, check connections of the gas detectors with the control unit, make sure that
jumpers are in correct positions and start the test once again. Should subsequent tests fail as well, please
contact the equipment manufacturer.
Test of the gas monitoring system is only possible when the control unit is in the PRACA
(OPERATION) mode. For systems with an open control loop such a test is infeasible.
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User Manual: POD-015-ENG R02