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Install mcus, Mount mcus to wall, Grounding instructions – Polycom SpectraLink SCM408 User Manual

Page 32

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SpectraLink 6100 MCU: Installation and Operation: SpectraLink 6000 System

PN: 1725-36097-001_L.doc

32

Install MCUs

Mount MCUs to wall

The MCUs are designed to be mounted on a backboard of 3/4”

plywood, securely fastened to the wall. Mount the MCUs vertically,

side by side, using 2.75” spacing center-to-center for each unit. Do not

stack MCUs on top of one another.
To mount the MCUs:
1. Using a 1/8” drill bit, drill four pilot holes, on 2” x 12.1” centers.
2. If installing only one MCU, insert the #8 x 3/4” screws in the pilot

holes and tighten, leaving a 1/8” to 1/4” gap from the wall.

3. If installing more than one MCU, the ESD bonding strap(s) must

be installed between adjacent units:

4. Remove the screws from the bottom of adjacent units.
5. Place the ESD strap over the pilot holes that span two units, and

hold it against the plywood backboard.

6. Place the star washer on top of the ESD strap.
7. Insert the #8 x 3/4” screw and tighten to leave 1/8” to 1/4” gap

from the wall.

8. Repeat for all ESD straps.
9. Slide the MCU over the screws until it drops in place.
10. Tighten screws fully.
11. Ground the unit per Grounding instructions below.

Grounding instructions

Safety

Warning

The metal chassis of this unit may contain leakage currents (i.e.,
"touch" current) which is cumulative when multiple units are
connected together to form a system. To prevent the summation of
leakage currents from being present on exposed metal surfaces, the
following installation procedure must be followed.

All system units must be grounded to a protective earth by means of

the grounding stud located on the rear panel. Refer to the illustration

below for recommended continuity connection.