Long-range beam smoke detectors
Maintenance and Testing | en
27
Bosch Security Systems, Inc.
Installation manual
2017.03 | 7.0 | F.01U.068.899
8
Maintenance and Testing
8.1
Fire alarm reset
Reset the receiver after a fire alarm by removing power from the receiver for at least 1 sec.,
then reapply power.
For additional information, see Power outage, page 27.
8.2
Reference voltage adjustment
Notice!
Clean covers are necessary for proper reference voltage readings. For cleaning procedures,
see Cleaning, page 27.
Check the detector’s reference voltage a minimum of once each year. Check the voltage more
often if required by local regulations or AHJs.
To check the reference voltage, connect a VOM to the voltage monitor contacts on the
D344‑RL or D344‑RT, if used. If you do not have a remote indicator connected to the detector,
remove the receiver access door and measure the reference voltage using the supplied test
cable. For cable connection, see Fine-Tune alignment, page 22.
If the voltage is less than 3.8 VDC or greater than 4.2 VDC, remove the access cover and press
the setup button to initiate a reset of the reference voltage. The reset can take 1 min to 2 min.
8.3
Cleaning
Clean the outside of the covers a minimum of once each year. Use a common window cleaner
and a soft, clean cloth. Under normal conditions, there is no trouble alarm if the beam is not
continuously blocked for longer than 18 sec. After cleaning, recheck the reference voltage. If
voltage is less than 3.8 VDC or greater than 4.2 VDC, reset the reference voltage using the
procedure in Reference voltage adjustment, page 27.
8.4
Power outage
When power is removed and reapplied to the receiver, such as in a power outage or alarm
reset, the original reference voltage information is lost.
–
If the cover is on when power is applied, the receiver restarts the process for a new
reference voltage
–
If the cover is off, reattach it and press the setup button.
8.5
Remote Test
Notice!
A D344‑RT is required for the remote alarm test.
Notice!
Clean covers are necessary for proper reference voltage readings. For cleaning procedures,
see Cleaning, page 27. For aiming procedures, see Preliminary alignment, page 20 and Fine-
Tune alignment, page 22.
1.
With a D344-RT connected to the receiver, use the following procedure to perform a
remote test.
2.
Insert the operating key and turn the switch to the TEST position for a minimum of 5 sec.
Summary of Contents for D296 Series
Page 1: ...Long range beam smoke detectors D296 D297 en Installation manual ...
Page 2: ......
Page 31: ......
