F220 Series |
Installation Instructions | 7.0
Maintenance
EN
| 11
Bosch Security Systems | 8/05 | 4998138694D
7.0 Maintenance
Notify all concerned parties before any
maintenance or testing of the fire alarm
system, and after completion of these
activities.
•
At least once a year vacuum or clean/dry the
external part of the detector with compressed air.
Pay particular attention to the screens in dusty
areas or heavy insect activity.
•
To clean the chamber, use a can of clean
compressed air. Place the tube or needle valve
through the ChamberMaid valve in the bottom of
the detector (see
Figure 1
, #5).
Shorten the plastic tube that comes with
the compressed air to about 2 in (5 cm).
The compressed air (such as
TECHSPRAY
®
ENVI-RO-TECH™
DUSTER) is available at office and alarm
supply stores.
•
Do not paint the detectors. Paint or other foreign
matter covering the thermistor or LED can
prohibit detection.
8.0 Periodic
testing
Keeping the detector calibrated is necessary for proper
operation. Depending on local regulations, calibration
testing can be required more than once a year. NFPA
72 recommends performing calibration tests at
installation, then every other year. Perform functional
testing yearly.
Notify all concerned parties before any
maintenance or testing of the fire alarm
system, and upon completion of these
activities.
Test the calibration (to meet NFPA) using either the
magnet test or measuring the calibration with a
calibrated product from No Climb Products Ltd.
Quickly determine the calibration by a visual
inspection of the detector’s LED (see
Section 9.0 Visual
check
). These tests confirm whether or not the detector
is within its factory marked calibration range.
9.0 Visual
check
These detectors includes the Chamber Check
Automatic Trouble Indicator, which verifies that the
detector’s calibration is within the factory listed range.
You can meet the NFPA guidelines for sensitivity
testing by visually inspecting the detector and checking
the flash rate of the LED. If the calibration is out of
range for more than 24 hours, the green LED on the
detector begins to flash approximately once every four
seconds. The LED flashes approximately once every
eight seconds when the detector operates normally.
Perform the visual check before resetting
power. After a reset the trouble indicators
clear for 70 seconds. After 70 seconds, if
the detector is in a trouble condition,
trouble indications begin again
