D7050DH
|
Installation Instructions | 8.0
Maintenance
.
Bosch Security Systems, Inc. | 9/06 | 49325E
5
7.3 Magnet
Test
To perform the Magnet Test, the control
panel must be in the Fire Walk Test Mode.
If the control panel is not in this mode, it
sends fire reports to the central station.
Refer to your control panel’s reference
guide for Fire Walk Test information.
1.
Hold a magnet horizontally against the recess in
the D343 cover for approximately 10 sec.
2.
Observe the LED. If the D7050DH is within the
factory marked calibration range, it goes into alarm
and the Alarm LED flashes at least once per
second.
a.
If the D7050DH is too sensitive, the Alarm
LED flashes six times rapidly (once every 0.5
sec) and the detector goes into alarm.
b.
If the D7050DH is not sensitive enough, the
Alarm LED flashes four times slowly (once
every 2 sec) and the detector goes into alarm.
3.
If the D7050DH is not operating, it does not signal
an alarm. Return the detector for repair.
7.4
Voltage Measurement Test
1.
Plug a D1005 Test Cable (optional) into the
calibration voltage pin.
2.
Connect a digital voltmeter to the D1005.
3.
Connect the voltmeter’s negative terminal to the
black wire on the D1005 and connect the positive
terminal to the red wire. The white wire is not
used.
4.
If a D344-RL or D344-RT is installed, use the
voltage monitor jacks as described below:
a.
The voltage measured by the voltmeter is half
the sensitivity (in %/ft obscuration) of the
D7050DH.
b.
Multiply the voltage by 2. The result must be
within the factory-marked calibration range
printed on the label located on the bottom of
the D7050DH.
c.
If the D7050DH is outside the factory-marked
calibration range, remove it and clean it. Or
replace it as described in
Section 7.1
Operational
Testing
.
d.
After cleaning, recheck the calibration voltage
measurement. If the D7050DH is still outside
of the factory-marked calibration range, return
it for recalibration to:
National Repair Center
130 Perinton Parkway
Fairport, New York 14450
8.0 Maintenance
Notify all concerned parties before and
after completing maintenance on or testing
the
fire alarm system.
Clean the detector and base at least once each year
using a vacuum or clean dry compressed air. Pay
particular attention to the screens. You might need to
clean more often in dusty areas or areas of heavy insect
concentration.
1.
Remove the D343’s cover.
2.
Remove the D7050DH from the base and clean
the base with a clean cloth and common window
cleaner.
3.
Remove the D7050DH’s cover using a thin,
flat-blade screwdriver to pry the chamber from the
cover. Insert the screwdriver into the cover slots
and pry off the cover (
Figure 5
).
Figure 5:
Removing the 7050DH Cover
1
3
4
2
2
2
1 - Flat blade screwdriver tip inserted into a cover
slot
2 - Cover slots (3)
3 - Chamber
4 - Cover
4.
Remove the cover of the detector chamber. Gently
pull the chamber cover up and away from the
chamber (
Figure 6
)
Figure 6:
Removing the D7050 Chamber Cover
