10
Gossen Metrawatt GmbH
METRAFUSE FD PRO
3. Press the receiver‘s on/reset button and immediately release it.
The receiver is turned on. A steady beeping tone is emitted and the receiver on LED is lit
green to indicate automatic scanning mode.
4. Reset the receiver by pressing and immediately releasing the on/reset button again.
The receiver is reset.
Attention!
!
The distribution board signal interferes with the reset.
Reset the receiver out of reach from the distribution board.
5. With the receiver, go to the distribution board that contains the fuses or circuit breakers
that may protect the circuit under test.
6. Place the receiver‘s scanning tip in contact with the face of the fuses or circuit breakers
at a right angle to the direction of the body and run the scanning head steadily along the
row(s) of fuses or circuit breakers. Ensure that you place the scanning tip on the circuit
side rather than the supply side of the fuse or circuit breaker.
When the receiver detects a stronger transmitter signal, the frequency of the beeping will
increase to a very rapid or continuous tone, the pitch of the beeper will increase and the
signal strength LEDs will light up, climbing the bar graph.
7. Continue scanning back and forth across all rows of fuses or circuit breakers until the
signal strength LED is lit only when the scanning tip is over one single fuse or circuit
breaker. (With each sweep the receiver will automatically adjust its sensitivity and disre-
gard weaker signals.)
Attention!
!
Scan all of the fuses and circuit breakers that may protect the circuit under test sev-
eral times.
The signal strength indicator used is comparative. Therefore, on the first scan of the
fuses or circuit breakers, the signal strength LED will often light for several different
fuses or circuit breakers. This indicates that the signal detected is the strongest found
so far. Do not stop scanning at this point as it may not be the strongest signal there is!
You have found the fuse or circuit breaker protecting the circuit under test.
Switch off the test instruments and unplug the transmitter from the outlet.
