VESDA VESDA VLF-500-UL 7Ed Product Guide
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2.3.2 Inverting the user interface display
Precaution: Electrostatic discharge precautions need to be taken prior to removing the front cover from the
detector.
For inverted mounting applications, the VESDA VLF will require the user interface display to be turned through
180°. This is carried out prior to installing the detector. Also refer to Figure 2-4 on page 8.
Inverting the user interface display:
1. Place the detector on its back, push in the securing tab and lift up the field service access door. (Refer
to Figure 6-3 on page 31).
2. Remove the 2 retaining screws and lift off the main cover.
3. Disconnect the restraining strap from the clip (C) and the ribbon cable from the user interface card (B)
and place the cover aside.
4. Open the clips (E).
5. Lift out the user interface display card, carefully turn it through 180° and then clip it back into place.
6. Reconnect the ribbon cable and the restraining strap.
7. Replace the main cover and screw down the 2 retaining screws.
8. Close the field service access door.
The detector is now ready for inverted installation.
Legend
A Ribbon cable clip D Interface card
B Ribbon cable connector E Clip
C Retaining strap clip F Air filter cartridge cavity
Figure 2-6: Inside view of the front cover (as it would appear inverted)
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