Physical installation 13
2. Bolt each clamp securely to a
clamp bracket with an M12 bolt
(minimum grade 8.8) and lock nut.
3. See Figure 6. Note the position of
the arrows on the bottom of the base
that indicate the front of the fixture.
4. Align a clamp with 2 mounting points in the base. See
Figure 7. Insert the fasteners into the base and turn both
levers a full 90° clockwise to lock. Install the second clamp.
5. Block access under the work area. Working from a stable
platform, hang the fixture on the truss with the arrows
marked FRONT printed on the base of the fixture facing
towards the area to be illuminated. Tighten the rigging
clamps.
6. See Figure 8. Install a safety wire that is approved as a
safety attachment for the weight of the fixture by looping it
through the safety attachment wheel on the bottom of the
base.
7. Check that the tilt lock is released. Check that there are no
combustible materials within 0.2 m (8 in.) or surfaces to be
illuminated within 2.5 m (100 in.) of the fixture, and that there
are no flammable materials nearby.
8. Check that there is no possibility of heads or yokes colliding
with other fixtures. Note that pan and tilt range on the MAC III
Wash can be restricted by setting minimum and maximum
limits via the control menus. This feature allows fixtures to be
installed closer together or closer to obstacles.
9. Check that other lighting fixtures cannot project light at the
MAC III Wash from a distance of less than 3 m (10 ft.), as
intense illumination can damage the MAC III Wash’s display.
Figure 5: Martin rigging hardware
Half-coupler Omega clamp
rigging clamp attachment bracket
Figure 6: Front of fixture
90°
Figure 7: Locking 1/4-turn fasteners
Figure 8: Safety cable attachment
point
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