shall be heard and the LED indicator shall flash. The alarm shall reset in 20 sec after withdrawing the
tester.
3.8 When interlinking alarms, connect contacts like to like (for pulling wires drill two 8 mm holes in
each base at marked places). Test the operation of the alarms' group, on triggering any of them
according to p.3.7. All the alarms shall sound, and the LED indicator shall flash on the initiating
alarm.
4. MAINTANANCE
4.1 It is recommended to test the alarm for proper operating once a month, affecting it with smoke
or a probe-tester (see p.3.7).
4.2. Periodically, semiannually, clean the optical system of the alarm from contamination through
vents with a vacuum cleaner during some minutes.
4.3 When the alarm generates short sound and light signals that testify about the battery discharge,
one should detach the alarm from the base and replace the power battery with a new one. After the
replacement of the battery test the alarm (see pp. 3.5, 3.7).
4.4 When the alarm generates short sound signals that testify the battery contamination, one needs
to carry out its cleaning according p.4.2.
5. WARRANTY
5.1 The guarantee operation period is 36 months since the day of approval by the quality control
department.
5.2 The free repair or replacement of a alarm within the warranty period is guaranteed provided
that the consumer keeps the rules of operation, transportation and storage.
6. UTILIZATION
6.1 The SPD-3.4 alarm is not dangerous for human life and health as well as for the environment
after the expiry of service life; its utilization can be carried out without taking any special measures
of environment protection.
Installation of battery
Wiring diagram for SPD-3.4