ETC fos/4 Series User manual

ETC Installation Guide
fos/4 Fresnel Yoke
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Product information and specifications subject to change. ETCintends this document to be provided in its entirety.
7470M2110 Rev B Released 2022-02
Overview
Install the fos/4 Fresnel Yoke using the instructions that follow.
WARNING: In addition to primary
suspension, attach a safety cable (or other
approved safety device) to the fixture. Safety
cables must be rated to support ten times the
fixture weight. Consult local standards to
ensure that safety cables meet all
requirements.
Follow all safety precautions described in the
fos/4 Fresnel User Manual , which is available
for download at etcconnect.com.
AVERTISSEMENT : En plus de la suspension
principale, fixez une chaîne de sécurité (ou
tout autre dispositif de sécurité homologué)
au projecteur. Les chaînes de sécurité doivent
être en mesure de supporter dix fois le poids
du projecteur. Consultez les normes locales
pour vous assurer que les câbles de sécurité
respectent toutes les exigences.
What's in the Box
In addition to the yoke, the following items are included in the installation kit.
Image Name Part Number Quantity Description
Clutch-plate cover 7470A4022 2 fos/4 Fresnel clutch-plate cover
Clutch-plate cover
bolt HWM1136 4 Bolt M4 x 10 mm
Clutch plate 7470A3019 2 fos/4 Fresnel clutch plate
Clutch plate bolt HWM1550 4 Bolt M4 x 8 mm
Yoke spacer HW6990 2 Sleeve bearing 5/8" ID 3/4" OD
1/2" L

ETC Installation Guide
fos/4 Fresnel Yoke
fos/4 Fresnel Yoke Page 2 of 3 ETC
Image Name Part Number Quantity Description
Yoke washer HW5126 2 Flat washer 5/16 .375 x .875 x .078
Yoke lock washer HW599-2 2 Lock washer 3/8 .390 x .683 x .094
Yoke bolt HWM2350 2 Bolt M8 x 25 mm
Tilt-lock bolt HWM2344 1 Bolt M8 x 25 mm CARR CL-8.8
Tilt-lock spacer HWM960 1 Spacer 16 mm OD x 10 mm ID x
10mmL
Tilt-lock HWM8014 1 fos/4 Fresnel tilt-lock
Install the Yoke
Tools required:Phillips screwdriver, 13 mm socket wrench
1. Position a clutch-plate cover on one end of the
yoke, and use a Phillips screwdriver to secure it
with two clutch-plate cover bolts. Repeat the
process to attach a clutch-plate cover to the
other side of the yoke.
Position clutch-plate
cover and secure
with bolts
2. Install the clutch plates on both sides of the
fixture using the clutch plate bolts.
3. Position the yoke to align over the clutch plates.
Install
clutch plates

ETC Installation Guide
fos/4 Fresnel Yoke
fos/4 Fresnel Yoke Page 3 of 3 ETC
4. Use the yoke bolt, lock washer, washer, and
spacer to loosely attach the yoke to the left side
of the fixture.
Install left
side of yoke
Lock
washer
Washer
5. Position the tilt-lock, spacer, and bolt, and then
use the yoke hardware to loosely attach the
yoke to the right side of the fixture. Ensure that
the tilt-lock bolt is captured behind the clutch
plate.
6. Adjust the position of the yoke as needed to
balance the fixture, and then tighten both bolts
using the 13mm socket wrench to secure the
yoke in position.
7. Tighten the tilt-lock to secure the fixture
position within the yoke.
Install
tilt-lock
and yoke
Tilt-lock bolt is
captured behind
clutch plate
Washer Lock
washer