Mitel Inter-Tel 5000, Installation And Maintenance Manual

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Chapter 5: Installation
Wall-Mounting the Base Server
Page 5-16
Inter-Tel
®
5000 Installation Manual – Issue 2.4, May 2008
Wall-Mounting the Base Server
Refer to wall-mount kit 828.1692 to wall-mount the base server chassis. Refer to the kit
documentation for wall-mounting instructions.
Grounding the Inter-Tel 5000 Base Server
With a U.S. system, the Inter-Tel 5000 Base Server must be plugged into a UPS and the UPS
plugged into a properly grounded AC power source. Some effective grounding connections
include the steel frame of the building in which the system is installed, a grounding rod that has
been driven a minimum of 8 ft (2.4 m) into the earth, or a copper—
not PVC—cold-water pipe.
With a European system, the equipment chassis must be plugged into a properly grounded AC
power source. The Krone field should also be hard-wired to the building earth.
In addition, all optional IP Single-Line Adapters, trunk gas discharge tubes, and UPS battery
compartments that are used must be properly grounded to the chassis AC outlet. The Inter-Tel
CommSource
®
division or Inter-Tel Europe sells a surge/spike protector that is equipped with a
built-in ground lug just for this purpose.
The grounding wire should be 10AWG [diameter 6mm] or larger. To provide RFI/EMI protection
only, it should not exceed 25 ft (7.5 m). To provide both RFI/EMI and lightning protection it
should not exceed 10 ft (3 m).
For additional and supplementary information, refer to Inter-Tel’s System Equipment Grounding
Guidelines , part no. 835.2845.
To ground the system:
1. Ensure the system AC power source is properly grounded. do not defeat (or leave
floating) the ground wire in the AC power cord.
2. For a U.S. system only, install an AC surge/spike protector with a built-in ground lug and
connect it to:
a. The ground lug (indicated by the symbol ) on each Single-Line Adapter, if used.
b. The ground lug on the back of the chassis, as shown in Figure 5-1 on page 5-15 .
c. Battery compartments, if used.
d. Trunk gas discharge tubes, if used.
3. Continue to “Base Server Modules” on page 5-36 .
If AC power-related problems appear on the system while in operation, one of the following
three methods can be used to test the ground.
•
Use a digital multimeter to measure the difference of potential between the equipment
cabinet ground point and the power neutral, and between the cabinet ground point and the
third wire ground. If the voltage measurement exceeds 0.5 V, noise may develop on the
system. If this occurs, call an electrician.
•
Use a reliable earth-ground testing device to test the ground point. An earth-ground tester
should be available through the local power company. Look for a reading of 5 ohms or
less.
•
For a U.S. system only, unplug the AC power cord from the outlet and insert a ground
isolation plug into the outlet. Plug the AC power cord into the ground isolation plug. If the
problem ceases, call an electrician. When finished, remove the ground isolation plug to
restore ground protection.
NOTICE
For proper grounding methods, refer to Inter-Tel’s System Equipment Grounding Guidelines ,
part no. 835.2845. See page 5-9 for additional AC power requirements.