Maintenance And Service; Resetting The Rf Interface Module To The Delivery State; Replacing The Batteries In The Rf Detectors; Replacing The Batteries On The Dow 1171 Rf Smoke Detector - Bosch DOW 1171 Operation Manual

26 en | Maintenance and service
9

Maintenance and service

9.1

Resetting the RF Interface Module to the Delivery State

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The RF interface module is now reset and is in the delivery state.
9.2

Replacing the Batteries in the RF Detectors

Notice!
Under optimum application conditions, lithium batteries have an operational life of approx. 5
years.
However, Bosch ST recommends that you replace the batteries after approx. 4 years, as part
of a scheduled inspection.
Batteries are changed during normal operation. It is not necessary to make any settings on the
fire panel. However, when removing the batteries or the detector, various system-specific fault
messages are generated, which must be reset manually once the batteries have been
replaced.
It makes no difference whether you first completely remove the weak/empty pair of batteries
in a detector and insert the new pair, or whether you replace the weak/empty batteries
individually, so that the power supply in the detector is never disconnected.
Only ever take one detector out of the base, in order to avoid confusion when re-inserting.
9.2.1

Replacing the Batteries on the DOW 1171 RF Smoke Detector

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After successfully logging in, the LED goes out.
9.2.2

Replacing the Batteries on the SMF121 RF Manual Call Point

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2016.04 | 6.0 | 4.998.120.885
Pull out the terminal block for the power supply in the RF interface module.
Activate the reed contact in the RF interface module, by moving a magnet (see the order
information in chapter Order information, page 27) along the left side of the interface
module housing, and then secure the magnet to the RF interface module (e.g. with duct
tape) so that the reed contact remains activated.
Now re-insert the terminal block for the power supply.
The red LED on the RF interface module lights up for approx. 10 seconds. As soon as it
goes out, the yellow LED starts to flash rapidly.
Deactivate the reed contact by removing the magnet.
Reactivate the reed contact in the RF interface module within 10 seconds by moving the
magnet along the left side of the interface module housing as often as is required, until
the green and the yellow LEDs are flashing rapidly.
After approx. 10 seconds, the red LED lights up briefly, while the green and yellow LEDs
continue to flash rapidly. This shows that the RF interface module is searching for a free
base channel (frequency).
Pull out the terminal block for the power supply in the RF interface module.
Turn the bayonet ring to the left and take the RF smoke detector out of the base.
Replace the batteries.
After inserting the new batteries, the red LED flashes 3 times within 2 seconds.
Insert the detector into the base within 10 minutes of replacing the batteries.
The red LED flashes at a frequency of 1 to 4 Hz depending on the field strength and thus
shows that RF smoke detector is logged back in to the RF interface module.
Open the RF manual call point with a suitable key and remove both screws (bottom left
and top right).
Carefully take the detector out of the base and leave it hanging.
Operation Guide
Radio Frequency Fire Detection System
Bosch Sicherheitssysteme GmbH