Chapter 4: Preparing for installation
Safety
Page
4-2
Safety
Hazardous locations
Warning
When installing the PMP/PTP 450i ATEX/HAZLOC product variants in hazardous locations,
follow the instructions contained in the PMP/PTP 450i Series Hazardous Location Guide
(supplied in box with the products), in addition to the instructions in this user guide.
Power lines
Exercise extreme care when working near power lines.
Working at heights
Exercise extreme care when working at heights.
Power supply
Always use one of the Cambium 450 Platform Family power supply units (PSU) to power the ODU.
Failure to use a Cambium supplied PoE 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
Always power down and unplug the equipment before servicing.
Primary disconnect device
The ODU power supply is the primary disconnect device.
