VESDA Maintenance Guide
VESDA
28
www.xtralis.com
8.2.2
Replacing the VESDA VLC Termination Card
Replacement Procedure
1. Remove the front cover of the detector (refer to Figure 8-15 on page 27).
2. Isolate and power down the detector before you begin.
3. Record all wiring connections to the termination card so that you can connect the replacement card
properly.
4. Disconnect the wiring for power, communications and relays from the 45 degree screw terminals.
5. Remove the four screws securing the termination card.
6. Disconnect the 3-way aspirator cable loom from the connector on the termination card.
7. Disconnect the 5-way front panel LED cable from the termination card.
8. Gently pull the termination card away from the interface card (connected behind).
9. Secure the replacement termination card with the four screws.
10. Reconnect the 3-way aspirator cable loom to the connector on the termination card.
11. Reconnect the 5-way front panel LED cable to the termination card.
Note:
Both the 3-way aspirator cable and the 5-way front panel LED cable are keyed so that they can only
be connected in one orientation.
12. Reconnect the wiring for power, communications and relays to the 45 degree screw terminals.
13. Check that all wires are secured to their correct terminals.
14. Power up the detector and check that the aspirator is running.
15. Resolve all Fault conditions.
16. Close the detector.
17. Reset Isolate to normal conditions and check that the airflow % has returned to the level it was at before
disassembly.
8.2.3
Replacing the VESDA VLC Aspirator
Replacement Procedure
1. Isolate and power down the detector.
2. Remove the four screws securing the termination card.
3. Disconnect the aspirator cable loom from the connector on the aspirator.
4. Gently pull the termination card out, away from the interface card (connected behind). Take care not to
dislodge any wires connected to the termination card and leave it suspended by these wires.
5. Remove the air hose from the aspirator pipe by pulling.
6. Undo the three Phillips head screws securing the aspirator; these screws are captive.
7. Turn the aspirator anti-clockwise, using the exhaust port as the pivot point.
8. Push the aspirator upward to remove it.
Содержание VLC
Страница 2: ......
Страница 6: ...VESDA Maintenance Guide VESDA iv www xtralis com This page is intentionally left blank ...
Страница 8: ...VESDA Maintenance Guide VESDA 2 www xtralis com This page is intentionally left blank ...
Страница 16: ...VESDA Maintenance Guide VESDA 10 www xtralis com This page is intentionally left blank ...
Страница 20: ...VESDA Maintenance Guide VESDA 14 www xtralis com This page is intentionally left blank ...
Страница 22: ...VESDA Maintenance Guide VESDA 16 www xtralis com This page is intentionally left blank ...
Страница 44: ...VESDA Maintenance Guide VESDA 38 www xtralis com Figure 8 31 Insert Chamber ...
Страница 54: ...VESDA Maintenance Guide VESDA 48 www xtralis com This page is intentionally left blank ...