Harman Martin Exterior Wash 300 Series, User Manual

Page: 11 / 40

Martin
®
Exterior Wash
TM
300 Series User Manual 11
give approximately 90° of pan adjustment. If additional bolts are required to mount the fixture safely, install
them passing through slots
C or holes B .
Install washers under all nuts and bolt heads.
Figure 1. Mounting yoke base dimensions
Suspending from a truss
In temporary installations, you can suspend the fixture from a rigging truss by means of two rigging clamps
securely fastened through holes
B in the yoke base (see illustration above). The fixture must be installed
hanging downwards only.
When using rigging clamps, 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 rigging clamp fails.
Loop the safety cable through the safety cable attachment point on the back of the fixture (see ‘Fixture
overview’ on page 9). Remove as much slack as possible from the safety cable (by looping it more than
once around the truss chord, for example).
Check that the truss and all fasteners used can support 10 times the weight of all the fixtures and
equipment that they will support.
Adjusting tilt
Warning! The fixture can become hot. Wear heat-resistant gloves if you adjust the
aim of the fixture when it is (or has recently been) powered on.
Tilt adjustment can be carried out with the fixture powered on as
follows:
1. Put on heat-resistant gloves.
2. Be prepared for the fixture to move. See illustration on right.
Loosen, but do not remove, the tilt lock screws (arrowed) on
both sides.
3. Tilt the fixture to the desired angle and retighten the screws.
Figure 2. Tilt adjustment