SEFRAM 3516BF Manuel D'utilisation page 53

Step 4. If it displays "L2", then BUZZER will be sound for twice.
Please switch the Red test lead to connect to the
supposed phase Line 2 immediately before the " L2 "
is disappeared.
Step 5. When "L2" is disappeared, it will display the testing
result.
a. If it displays " 1 2 3 ", then the phase sequence is forward
sequence, which means the supposed phase Line 1 is
ahead of the supposed phase Line 2.
b. If it displays " 3 2 1 ", then the phase sequence is reversed
sequence, which means the supposed phase Line 2 is
ahead of the supposed phase Line 1.
c. "----" means that the meter is unable to determine the
results.
d. If displays "LoU", it is possible that you remove the test
leads before completing the whole testing procedures.
Step 6 : To repeat the test, press the OK button again.
M35X6BF-M-00
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