Table Of Contents

Safety

Electrical Safety

Grounding

High Voltage

ESD Procedures

Safety

---

This section describes the following topics:

•Electrical Safety

•ESD Procedures

Electrical Safety

To avoid an electric shock or damage to the Cisco Unified Videoconferencing 3515 MCU unit, servicing should be performed by qualified service personnel only.

To reduce the risk of damaging power surges, Cisco recommends installing an AC surge arrestor in the AC outlet from which the Cisco Unified Videoconferencing 3515 MCU unit is powered.

---

Warning Do not attempt to open the Cisco Unified Videoconferencing 3515 MCU unit.

---

---

Warning Changes or modifications to the device that are not approved by the party responsible for compliance could void the user's authority to operate the equipment.

---

Grounding

The power cable of the Cisco Unified Videoconferencing 3515 MCU unit should only be connected to a power outlet that has a protective earth contact. Do not use an extension cord that does not have a protective conductor (ground). The Cisco Unified Videoconferencing 3515 MCU unit can become dangerous if you interrupt any of the protective conductors (grounding) or disconnect any of the protective earth terminals.

---

Caution For North American installations, select a 3-conductor (18 AWG) power supply cord that is UL listed and CSA certified. The cord must be terminated in a molded-on plug cap rated 125V/5A, with a minimum length of 1.5m (6 feet) and no longer than 4.5m (approximately 14 feet).

---

---

Caution This is a class I unit. In Denmark, use this unit with an AC cord suited to Danish specifications. The cord should include an earthing conductor. Plug the unit into a wall socket outlet which is connected to the protective earth contact. Do not use socket outlets which are not connected to a protective earth contact!

---

High Voltage

Disconnect the Cisco Unified Videoconferencing 3515 MCU unit from the power line before removing the cover. Avoid any adjustment, maintenance, or repair of an opened chassis under voltage. These actions should only be carried out by a skilled person who is aware of the dangers involved. Capacitors inside the chassis may still be charged, even if the unit has been disconnected from the power source.

ESD Procedures

To prevent damage to the Cisco Unified Videoconferencing 3515 MCU unit by random electrostatic discharge (ESD), the use of wrist straps is highly recommended.