![[6.2.2] Alarm Tests](/images/new-backgrounds/55720/5572013x1.webp)
Test — The trouble condition can be caused inten- tionally to verify correct operation of the sys- tem. Remove the detector board to cause a trouble condition locally and at the system control panel.
[6.2.2] Alarm Tests
[6.2.2.1]
1.Place the painted surface of the magnet onto the TEST locator on the bottom of the housing (Figure 9).
2.The red alarm LEDs on the detector should latch on, as should any accessories (i.e. RA400Z, RTS451). Verify system control panel alarm status, and control panel execution of all intended auxiliary functions (i.e. fan shutdown, damper control, etc.).
3.The detector must be reset by the system control panel, the local reset button, or the remote accessory.
Figure 10. Testing detector alarm:
[6.2.2.2] RTS451/RTS451KEY Remote Test Station The RTS451/RTS451KEY Remote Test Station facilitates test of the alarm capability of the duct smoke detector as indicated in the RTS451/RTS451KEY manual. The DH100LP duct smoke detector can be reset by the RTS451/RTS451KEY. If a system control panel is used, the panel itself may also require testing.
To install the RTS451/RTS451KEY, connect the device as shown in Figure 9; wire runs must be limited to 25 ohms or less per interconnecting wire.
[6.2.3] Sensitivity Tests
[6.2.3.1] MOD400 or MOD400R Test
After verification of alarm capability, use the MOD400R test module with a voltmeter to check detector sensitivity as indicated in the test module’s manual. The housing cover must be removed to perform this test.
If test module readings indicate that the detector head is outside of the acceptable range that is printed on the label of the detector, the detector requires cleaning per Section [7] of this manual.
[7] Detector Cleaning Procedures
Notify the proper authorities that the smoke detector sys- tem is undergoing maintenance, and that the system will temporarily be out of service. Disable the zone or system undergoing maintenance to prevent unwanted alarms and possible dispatch of the fire department.
[7.1] Air Filters
1.Turn off power to the system.
2.Remove and inspect sampling tube filters.
3.If filters are heavily coated with dirt, replace them with new filters. If they are not heavily coated, use a vacuum cleaner or compressed air nozzle to remove dust, then reinstall the filters.
[7.2] Photo Detector Boards
1.Remove the screen by gently grasping on each side and pulling straight off
2.Lift the photo chamber in the same fashion. Vacuum the screen and cover. Use clean, compressed air to loosen and blow out any remaining debris. Replacement screens
3.Vacuum photo chamber, then use clean compressed air to blow area clean.
4.Replace the chamber by pressing it onto the base. Press the screen into place. It should fit tightly on the chamber.
[8.0] Board Replacement
[8.1] Detector Board Replacement (part no. A5180)
1.Remove the two detector board mounting screws.
2.Pull gently on the board to remove it.
3.To replace the board, align the board mounting features, holes, and the interconnect terminals. Push the board into place.
4.Secure board with the two mounting screws.
[8.2] Power Board replacement (part no. A5061)
1.Disconnect wiring from the terminal block.
2.Remove the two power board mounting screws.
3.Pull gently on the board to remove it.
4.To replace the board, align the board mounting features, holes, and the interconnect terminals. Push the board into place.
5.Secure board with the two mounting screws.
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