Bosch | 6/04 | 32029E
4
D285/D285TH
| Installation Instructions |
4.0 Maintenance
Notify all concerned parties before and after
fire alarm system maintenance or testing.
At least once a year, clean the detector and base. Use a
vacuum or clean/dry compressed air, paying particular
attention to the screens. In dusty areas or areas of heavy
insect concentration, cleaning might be required more
often.
To clean the detectors:
1.
Remove the detector from the base. Clean the base
with a clean cloth and common window cleaner.
2. Remove the detector’s cover. Use a thin, flathead
screwdriver to pry the chassis from the cover.
Insert the screwdriver into the cover slots and pry
up (refer to Item 1 in Figure 2).
3. Gently pry the cover tab away from the chamber
cover and pull the chamber cover up and away from
the chamber (refer to Item 2 in Figure 3).
4. Using clean, dry compressed air or a vacuum,
remove any dust or debris from the chassis area.
5. Replace the chamber. Ensure the hole for the LED
(and thermistor) is properly aligned over the LED
(and thermistor). Place the chamber parallel to the
chassis and gently snap the locking tabs into place.
6. Replace the detector’s cover, carefully aligning the
LED holes and thermistor.
7.
Return the detector to its base.
After cleaning, test the detectors for proper
calibration using one of the tests described
in Sections 5.1 Visual Check, 5.2 Magnet
Test, or 5.3 Voltage Measurement Test
on
page 5.
Do not paint the detectors. Paint or other
foreign matter covering the screens can
prohibit or retard smoke from entering the
detector.
4.0 Maintenance
Figure 2:
Removing the Detector Base
1 - Cover slots (3)
2 - Detector chassis
3 - Cover
2
1
3
#1
Figure 3:
Removing the Detector’s Chamber Cover
#2
