4
IK-E286-001E
3
SAFETY CONDITIONS
3.1 Repairs and maintenance
Any maintenance works or periodic inspections shall be executed by skilled personnel employed by
companies authorised and trained by POLON-ALFA.
Any repairs must be carried out by the manufacturer. POLON-ALFA bears no responsibility for the
operation of any apparatus being repaired by unauthorised personnel.
3.2 Works at height
Any detector installation works carried out at height must be executed with particular care utilising
tools and machinery in good working condition. Special attention shall be given to stability of ladders,
elevators, lifts, etc.
Any electric tools shall be used strictly obeying the safety rules stated in instruction manuals by
manufacturers.
3.3 Anti-dusting eye protection
It is obligatory to use protective anti-dusting glasses and masks during the EKS-4001 element
installation works that produce high amount of dust, such as hole drilling in walls and ceilings.
4
DESIGN DESCRIPTION
The EKS-4001 monitoring and controlling element (Fig. 1) is a replaceable module in the form of a
printed board with electronic circuits, enclosed by a cover, placed in a case furnished with a terminal
block. Two illuminating diodes are located on the module cover outer side, on the opposite side
–
two angle plugs are placed that enable connection of the module with the terminal block in the
CUBO S type case. The following case sizes are available: for one, two and four EKS-4001 modules.
The case bases are drilled in the corners to provide openings for wall mounting. Two PG7 cable gland
seals are located in the case base side wall in order to insert the detection line inputs and outputs.
Additionally, two or four (depending on the case type) PG9 cable gland seals are provided to
introduce the monitoring and controlling wires. A mounting plate with two slots for modules is fixed
to the case base. One slot is designed for connection of the detection line input and output wires; the
other one
–
for connection of the monitoring and controlling wires. Screens of the detecting line and
monitoring and controlling cables should be connected to the clamps located between the slots. The
case cover plate with a rubber seal is fastened to the case base with four plastic screws. Special
attention should be given to proper alignment of the lug and opening located diagonally.
5
PRINCIPLES OF OPERATION
Communication between the POLON 4000 system control panel and the EKS-4001 monitoring and
controlling element is provided by a two-core addressable detection line. The monitoring and
controlling element is equipped with a short circuit isolator. Actuation of a fire-fighting device (e.g. a
smoke damper) or signalling device (e.g. a buzzer or optical indicator) is achieved due to the element
relay contacts closing evoked by a command from the control panel. The monitoring and controlling
