VESDA LaserCOMPACT Maintenance Manual

Replacing the LaserCOMPACT aspirator
Aspirators, in VESDA LaserCOMPACT (VLC) detectors are replaced as follows:
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.
Figure 11: Replacing the Aspirator in a VLC detector
9. Check that the new aspirator has a gasket on the inlet flange and three
attached screws.
10. Wipe the manifold outlet flange surface.
11. Secure the aspirator with the three screws.
12. Reconnect the previously removed air hose to the pipe on the aspirator.
Ensure a tight fit over the pipe.
13. Reinsert the termination card into the interface card.
14. Secure the termination card with the four screws.
15. Connect the aspirator cable connector to the socket on the aspirator;; the
connector is keyed and can only be inserted one way.