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12
RUSH MH 4 Beam User Manual
2. Block access under the work area.
3. The fixture is supplied with two omega-type brackets to which rigging
clamps can be attached. Check that the rigging clamps are undamaged
and approved for the fixture’s weight. Bolt a rigging clamp securely to
each bracket. The bolts used must be M12, grade 8.8 steel minimum, and
fastened with self-locking nuts.
4. Fasten the omega brackets to the base of the fixture
using the brackets’ quarter-turn fasteners. Turn quarter-
turn fasteners a full 90° to lock them (see illustration on
right).
5. Working from a stable platform, hang the fixture on the truss and fasten
the rigging clamps onto the truss.
6. Secure the fixture with a safety cable as directed below.
7. Check that the head will not collide with other fixtures or objects.
Securing with a safety cable
Secure the fixture with a safety cable (or
other secondary attachment) that is
approved for the weight of the fixture so
that the safety cable will hold the fixture if
a primary attachment fails.
Loop the safety cable through the cutout
in the fixture’s baseplate (arrowed in
illustration on right) and around a secure
anchoring point.