Lens Identification; Changing Source Four Par Lenses; Removing A Lens; Installing A Lens - ETC Source Four PAR Manual

Lens identification
Lenses for the Source Four PAR come in four versions. The type or beam spread can
be identified by the lens texture.
VNSP
Very narrow spot
Clear glass
15° Round beam shape
MFL
Medium flood
Fewer facets, sized 6 x 22mm
21° x 34° Oblong beam shape

Changing Source Four PAR lenses

Change lenses if they become cracked or badly scratched.
Never operate the Source Four PAR without a lens in place.
Caution!

Removing a lens

Unplug the fixture before attempting to remove or install a lens.
WARNING!
Source Four PAR lenses get hot while the unit is in operation. Let the fixture cool
1.
before handling the lens.
Place the fixture on a flat, stable work surface.
2.
with the unit hanging.
Position the lens rotation ring with the spring clip at the top of the unit, directly
3.
below the retaining clip.
Tilt the front of the fixture down at least 45 degrees.
4.
Press the spring clip with your finger to release the lens (
5.
Allow the lens to drop forward from under the clip.
6.
When the lens drops, remove your finger, allowing the lens to slide forward until
7.
it rests on the lens catchers (
Carefully remove the lens from the fixture.
8.

Installing a lens

Position the fixture with the front of the unit (the lens side) facing you, and tilted
1.
slightly ( ).
Figure 2
Position the lens rotation ring with the spring clip at the top of the fixture, directly
2.
below the retaining clip.
Hold the lens by the edge, and position it so the convex side faces the back of
3.
the fixture (
Figure 4
Installing the lens with the convex side out will not impair the optics, but it
Note:
will make removing the lens difficult.
From the top of the fixture, slide the lens behind the lens catchers and position
4.
its base behind the tabs on the bottom of the lens rotation ring.
Gently push the top of the lens inward until it snaps behind the spring clip.
5.
NSP
Narrow spot
Stipple glass (slight diffuse texture)
19° Round beam shape
WFL
Wide flood
Many facets, sized 6 x 12mm
30° x 51° Oblong beam shape
).
Figure 3
).
install or remove lenses
Do not
).
Figure 2
Spring clip
Tab
Retaining clip
Figure 2
Lens
catcher
Figure 3
Retaining clip
Spring clip
Tab
Figure 4
Source Four PAR • 3