Atest Gaz Alpa MOD LED1, Руководство пользователя

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1 General information
The control unit module Alpa MOD LED1 is a single-channel control device designed for operation at
facilities with a risk of hazardous gases presence, for instance toxic gases (CO, NOx), flammable gases (CH4,
LPG) or any other gases that can be monitored by means of appropriate detectors. The complete system is
made up of measuring (threshold) detectors, a power adapter, audial and visual signal towers (stacklights),
additional warning boards to produce audial and visual warning and alarm signals as well as a control unit
that is responsible for the following issues:
analysis of signals received from detectors,
dissemination of warning and alarm signals,
monitoring and troubleshooting of the system.
2 Safety
All activities related to connecting detectors, signallers and other system components must
be carried out while Control Unit's power supply is off.
Despite the power supply voltage for the Gas Safety System is off, dangerous voltage may
persist across terminals of the Control Unit. Such a voltage may come from another system
controlled by the same unit, for instance ventilation, that use one output pin of the Control
Unit.
The control unit module must be reliably secured during any repair, installation or
maintenance works.
3 Description of the construction
Figure 1: The construction of the device and its dimensions
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User Manual: POD-015-ENG R02