27
troubleshooting
guide
PROBLEM POSSIBLE SOLUTION CORRECTION METHOD
HOLIDAY
DETECTOR
WILL NOT
DETECT
HOLIDAYS
Field Calibration Perform a field calibration to compensate
for environmental factors (see page 15). Use
NACE equation to set min voltage. Travel over
known holiday. Turn up voltage and repeat
until holiday is detected. (Note: Max voltage
is determined by the coating manufacture,
typical values for new coating range from
400 to 1000 Volts/mil).
Detection Testing Touch electrode/wand directly to bare ground
cable to test that the unit is functioning
properly. A spark will appear and the horn
will sound if switch is in the “ON” position.
If it does not detect then ensure ground cable
and electrode wand are correctly inserted
(see page 10).
If unit still fails to detect a direct short
repair may be needed, Call SPY Inspection
Equipment for support.
Minimum Voltage
Setting
Follow NACE standard SP0490-2007
Section 3 and NACE SP0274-2011 Section 3.
Also refer to the voltage table on page 27.
Check Detector Ground
Connection
With the detector OFF remove the ground
cable and fully reinsert it twisting 90 degrees
until locked. Ensure the opposite end is clean
and well connected to the pipe or earth
ground.
Check Electrode/Wand
Connection
With the detector OFF remove the wand and
fully reinsert until it locks into place. Ensure
wand and electrode connection points are clean.
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