Xtralis VESDA VLS Product Manual page 44

Xtralis VESDA VLS Product Guide
8. Unscrew the two manifold retaining screws (G).
H
G
H
H
9. The manifold is held in place by four tabs (H). Use a flat head screw driver to lever out the
tabs near the head termination card, and lift up that end of the manifold. While holding the
manifold up, use the screw driver to lever out the other two tabs. This is a tight fit. As you lift
out the manifold note that the flow sensor and scanner cables disappear through a hole in
the manifold. Once the manifold has been lifted out you can see that these cables are still
connected to the flow sensor board on the air inlet pipe manifold.
Note: The chassis consists of the detection chamber, head processor card and flow
sensors. These are factory calibrated as a matched set and must not be separated.
separating the set and replacing it with components from another VLS will cause the
detector to malfunction. This will require the chassis to be returned to the factory.
10. Unscrew the three screws holding the pipe inlet in place (I). Two screws are hidden in holes
in the PCB (Flow sensor board).
11. Lift the air inlet up and out.
I
12. Attach the replacement manifold and chassis by reversing the procedure above.
13. Configure the VLS using VSC or VSM4 by highlighting the detector in the Device Tree
Window and selecting Restore Node Configuration from the Device Menu, or reprogram
the detector manually using the LCD Programmer
Note: Power cables must be the last to be connected. Connecting the power cables
before all of the data cables can lead the unit to malfunction, requiring the VLS to be
returned to the factory.
38
H
G
Figure 25 - Remove the chassis
I
I
J
Figure 26 - Removing pipe inlet manifold
Legend
G 2 Manifold retaining screws
H 4 Retaining tabs
Legend
I 3 Pipe-inlet retaining screws
J Pipe inlet manifold
Xtralis VESDA
®
www.xtralis.com