Polycom spectralink sca516 User Manual

Page of 64
Install SpectraLink 6000 System  
PN: 1725-36097-001_J.doc 
31
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.