4
IK-E283-001E
Special attention shall be given to the stability of ladders, platforms, etc.
Any electric tool shall be used strictly obeying the safety rules specified in the manufacturer instruction
manuals.
3.3 Anti-dusting eye protection
It is obligatory to use protective anti-dusting glasses and masks during detector installation works that
produce high amount of dust, such as hole drilling for detector base mounting on ceilings.
4 DESIGN DESCRIPTION
The ADC-4001M adapter is placed in a casing similar to those of 40 model range detectors, however the
casing is not ribbed – the upper part is entirely closed. A cover is fitted to the casing and a two-colour diode
is located from the front side. The adapter is mounted in the G-40 installation base, where also installation
wires and cables screens are fixed to.
Fig.1 ADC-4001M adapter
5 OPERATION DESCRIPTION
The ADC-4001M adapter is an addressable device operating in a loop-shaped detection line that monitors
two-stage detectors installed in its branch line. All line elements, installed in the branch line, possess a
common address determined by the adapter.
A fire signal induced by a detector installed in the branch line is transmitted via the adapter to the control
panel whereas it is signalled in the adapter with a red flashing diode light.
A branch line fault (short circuit or breakage) is also transmitted to the control panel; in this case the diode
flashes with a yellow light. Any branch line fault does not have any impact on the detection line.
The adapter is equipped with internal short-circuit isolator that cuts off the efficient part of the addressable
detection loop. The isolator, after revealing a voltage decrease on its contacts, resulted from a short circuit
in the detection line, cuts off the shorted section. The short-circuit separation is signalled with a yellow
diode flashings and appropriate information is passed to the control panel.
The adapter operates in six working modes. A proper mode shall be declared at the control panel. The
mode selection is provided in order to optimise the adapter current consumption adjusting it to particular
needs (see Table 1).
