Nautel NV15, Operation And Maintenance Manual

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NV15/NV20 Operations and Maintenance Manual
Version 3.2 2013-10-01 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.
Use only a non-contact voltage probe or a safety voltmeter (available from vendors such as Fluke,
Ideal, and Teagam).
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.