13
Removing a lens
The best way to remove a VPL lens is to open the hooks at the profile and lift the lens up. We strongly recommend not to use any
metal tools in the process as these can damage both the VPL lens, the VPL aluminium profile, the optical silicone and, in worst
case, the LEDs, which will result in a reduced Ingress Protection.
Cutting a VPL lens
When adjusting the length of a VPL we recommend sawing it with a fine-toothed saw (a blade with 24 or more teeth per inch) like a
hacksaw. Keep in mind that when sawing by hand we recommend using a mitre box and driving the saw as horizontal as possible
(See figure 22). When the lens has been cut, some plastic shavings might remain on the lens, which can be removed with a sharp
edge or knife (See figure 23).
Figure 20: Open lens-hooks
Figure 21: Lift up the VPL lens
at least 24
teeths/ inch
Remove
residue
Problem
Potential cause(s)
Remedies
Fixture does not respond or appears to
be off.
No power to the fixture.
(The fixture does not react when touching the power-box
with a magnet)
Confirm that the power is switched on, that the cables
are plugged in, and the power connector is inserted and
turned to its locked position.
No data to the fixture
(The fixture reacts to touching the power supply with a
magnet)
Confirm that the cables are plugged in and the power
connector is inserted and turned to its locked position.
Fixture suddenly turned off.
Power was turned off.
Check the switches and breakers.
Data connection was disconnected.
Inspect data cables.
If the problem is not solve, please contact SGM support via: [email protected] or through your local SGM distributor.
Troubleshooting
The VPLs introduce a new troubleshooting tool. To test the functionality of a VPL,
touch the VPL around the power box with a magnet or the SGM Spanner key/
magnet (see figure 24). If there is power connected, it will red LED's only. Touch
the VPL with the magnet again and it will show blue LED's only. Next time it will
be Green LEDs only, then white, and finally, individual LEDs going back and forth.
This can be used to determine whether the fixture is faulty, or not receiving power.
Figure 24: Functionality test of VPL
Figure 22: Cutting the lens horizontally
Figure 23: removing left-over shavings
