Nautel NV7.5, Operation And Maintenance Manual

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NV10/NV7.5 Operations and Maintenance Manual
Issue 3.4 2016-08-03 Page xiii
About Safety
All Nautel transmitters are designed to meet the requirements of EN60215, Safety
Requirements for Radio Transmitters. The philosophy of EN60215 is that the removal of any
cover or panel that can only be opened using a tool is a maintenance activity, and that any
person performing a maintenance activity is expected to be trained for that activity. Under
EN60215, it is assumed that trained personnel will be knowledgeable and will take precautions
such as removing all power to the transmitter before accessing its components.
Electrical Hazards
To remove power from the transmitter, switch off and lock out the ac power. There are three
amber LEDs at the bottom rear of the cabinet that glow to remind anyone who has not turned
off the power that the system is live and serious danger is present.
DANGER - HIGH VOLTAGE
Indicates dangerous voltage (in excess of 72 volts), capable of causing a fatal
electrical shock, are present on or near parts bearing this label.
Mount the transmitter ac power disconnect switch/breaker close to the transmitter so that it
can be reached quickly in an emergency. Clearly label the switch/breaker (e.g.,
EMERGENCY
SWITCH
).
After turning off the power, always perform a measurement to confirm that the power is off
before touching anything within the transmitter. If the wrong breaker was opened, the
equipment will be live.
WARNING: It is not enough to switch off RF power. The power line is
still connected. Disconnect and lock out the upstream supply before
servicing.
WARNING: Do not use an ordinary multimeter to check for voltage,
since it may have been left inadvertently on the AMP (A) range,
triggering a short and an arc blast that could result in severe
burns and even death.