Harman Martin ELP WW IP, User Manual

Page: 12 / 39

12 Martin® ELP WW IP User Manual
Mounting the fixture on a truss
The fixture can be clamped to a truss or similar rigging structure in any
orientation. Use a suitable rigging clamp such as a G-clamp or a half-coupler
clamp (see illustration on right) fastened to the mounting yoke.
To clamp the fixture to a truss:
1. Check that the rigging structure can support at least 10 times the weight
of all fixtures and equipment to be installed on it.
2. Block access under the work area.
3. Bolt a rigging clamp securely to the mounting yoke. The bolts used must be M12, grade 8.8
steel minimum, and fastened with a self-locking nut.
4. Working from a stable platform, mount the fixture on the truss and fasten the rigging clamp
onto the truss.
5. Secure the fixture with a safety cable attached to the rear safety eye as shown below.
Securing with a safety cable
Secure the fixture with a safety cable (or other suitable secondary attachment) that is approved for
the weight of the fixture so that the safety cable will hold the fixture if the primary attachment fails.
Fasten the safety cable to the attachment eye at the rear of the fixture (see illustration above) and
loop it around a secure anchoring point. Take up as much slack in the cable as possible to
minimize any drop if the primary attachment fails.
If a safety cable attachment point becomes damaged or deformed, do not use the fixture. Return it
to a Martin Service Centre for repair.