20
VDO Fatron™ Family Safety and Installation Guide
Linear end-to-end couplers are rugged items but do not expose them to bending, shear or torsion stress. A
VDO Fatron fixture can apply a huge leverage force if it is allowed to hang horizontally when it is only
supported at one end. Do not use an end-to-end coupler to support weight.
To join two fixtures using a linear end-to-end coupler:
1. See Figure 10. Loosen – but do not remove – the four Allen (hex) screws
A
on the coupler.
2. Slide the coupler shoe
B
into the channels in the rear of the fixtures until both fixtures meet in the center
of the coupler. Tighten the screws on the coupler.
Mounting fixtures on a structure or surface
Once you have installed mounting hardware on a VDO Fatron fixture as described in the previous sections
of this chapter, you can install the fixture on a rigging truss or similar structure, or on a surface.
Warning!
Before you mount fixtures on a structure or surface, check that it can hold at least ten times the
weight of all the items it must support.
If installing the fixtures in a location where they may cause injury or damage if they fall, secure each
fixture with its own safety cable as described in “Safety cable attachment” on page 15.
Use minimum two sliding brackets or half-coupler clamps per 1000 mm fixture. Use minimum one
sliding bracket or half-coupler clamp per 320 mm fixture.
The various options for mounting the VDO Fatron are covered below.
Mounting on a rigging truss of similar bar using sliding brackets
Warning!
Do not mount VDO Fatron fixtures using G-clamps, quick-trigger clamps or any other type of clamp
that does not completely encircle the truss chord (or similar supporting bar) when fastened.
To suspend the fixture from a rigging structure such as a truss in any orientation:
1. Fasten a half-coupler rigging clamp directly to each sliding bracket on the fixture using an M12 grade 8.8
bolt passed through the hole in the mounting bracket and secured with a washer and an unworn
self-locking nut.
2. Block access under the work area. Working from a stable platform, hang the fixture on the truss,
fastening each half-coupler clamp around the truss chord.
3. If you are installing the fixture in a location where it may cause injury or damage if it falls, secure the
fixture with a safety cable as described in “Safety cable attachment” on page 15.
3W1R
Figure 10: Installing a linear end-to-end coupler
Ends of fixtures must meet in center of coupler
B
A
www.audiovias.com
Summary of Contents for Martin VDO Fatron 20
Page 1: ...VDO Fatron User Manual www audiovias com ...
Page 49: ...www audiovias com ...
Page 50: ...www audiovias com ...
Page 51: ...www audiovias com ...
