inspections. In case the detector is hardly visible or is installed in a difficult-to-reach space, an additional
optical alarm indicator (WZ-31) may be connected in an accessible and visible place.
Communication between the POLON 4100/POLON 4200 fire alarm control panel and the DOR-4043
detectors is obtained with an addressable two-wire detection line. Unique, fully digital communication
protocol enables passing any information from the fire alarm control panel to the detector and
inversely.
Apart from transmitting an evaluation of fire factors and tendency of their changes, the detector passes
to the control panel, on its request, the current analogue value.
The detector operation controlling microprocessor monitors correctness of its basic circuits operation
and, in case an irregularity is found, reports relevant information to the control panel.
The DOR-4043 is an analogue detector with an automatic sensitivity self-regulation digital mechanism
that is it maintains a constant sensitivity level during progressing dirt build-up in the measuring
chamber.
After exceeding a pre-set threshold of technical alarm, the detector transmits a signal to the POLON
4000 system control panel denoting the measuring chamber partial contamination. The signal is
generated in order to inform the servicing personnel that the detector parameters shall not remain at
the declared level in case the dirt build-up tendency is maintained and appropriate measures are not
taken. It must be stressed that the detector shall be fully efficient within ca. 1/3 of the time period that
passed since the latest maintenance works.
The detector is equipped with an internal short circuit isolator that cuts off an efficient part of a
detection line from the adjacent shorted section what enables further undisturbed detector operation.
The detector alarm mode is signalled with flashing red light of the illuminating diode. The fault mode,
technical alarm and an actuation of a short circuit isolator are signalled with yellow flashes of the diode.
The detector sensitivity level is adjustable. Its sensitivity is settled from the control panel level choosing
one of available sensitivity levels: 1st operation mode –normal sensitivity, 2nd operation mode –
increased sensitivity, 3rd operation mode –decreased sensitivity.
The detector operation modes (besides the control panel alarm variants) entails that the user is able to
adapt, in the best way, its operation characteristics to operation in the determined environment.
6 OPERATION AND MAINTENANCE CONDITIONS
During the detectors operation it is obligatory to avoid creation of dew or rime on the detector surface
as well as to protect against excessive contamination with dust.
In the time of any repair works, the detector should be taken out or protected with provided-
for-this-purpose cover. Such a cover can be obtained from an installer or purchased from the
manufacturer. In case the detector is taken out, its base should be protected against being
painted utilising a painting tape. Detectors which are damaged during painting and renovation
works due to a fault of the persons executing such works (e.g. painted detector casing, stuck-
with-paint net, etc.) are not subject to warranty repairs.
During the operation life, the DOR-4043 addressable optical smoke detector should be subjected to
periodical inspection according to PKN-CEN/TS 54-14:2006 standard, which is executed in order to
confirm the detector proper operation and its appropriate interoperation with the control panel. The
inspection should be carried out at least every 6 months.
