Chapter 5: Installation
Safety
Page 5-2
Safety
Warning
To prevent loss of life or physical injury, observe the following safety guidelines. In no
event shall Cambium Networks be liable for any injury or damage caused during the
installation of the Cambium PTP 550. Ensure that only qualified personnel install a PTP
550 link.
Power lines
Exercise extreme care when working near power lines.
Working at heights
Exercise extreme care when working at heights.
PSU
Always use one of the Cambium PTP 550 Series power supply units (PSU) to power the ODU.
Failure to use a Cambium supplied PSU could result in equipment damage and will invalidate
the safety certification and may cause a safety hazard.
Grounding and protective earth
The Outdoor Unit (ODU) must be properly grounded to protect against lightning. It is the user’s
responsibility to install the equipment in accordance with national regulations. In the USA
follow the requirements of the National Electrical code NFPA 70-2005 and 780-2004
Installation
of Lightning Protection Systems
. In Canada, follow Section 54 of the
Canadian Electrical Code
.
These codes describe correct installation procedures for grounding the outdoor unit, mast,
lead-in wire and discharge unit, size of grounding conductors and connection requirements for
grounding electrodes. Other regulations may apply in different countries and therefore it is
recommended that installation of the outdoor unit be contracted to a professional installer.
Powering down before servicing
Before servicing PTP 550 equipment, always switch off the power supply and unplug it from
the PSU.
Do not disconnect the RJ45 drop cable connectors from the ODU while the PSU is connected to
the power supply. Always remove the AC or DC input power from the PSU.