Displayed Voltage is Higher than that at Probe Tip
Possible Reason Solution
Damaged high voltage lead Replace lead
Missing/ broken neon indicator Replace neon indicator
Poor earth connection Check connections. See Section 4.5
7.2 Alarm Related Problems.
Alarm Sounds Continuously
Possible Reason Solution
Conductive coating See Section 6.4.1
Sensitivity too high Red uce sensitivity by turning
‘Sensitivity’ anti-clockwise
Probe movement too fast Move at 0.25m/s (10"/s)
Probe surface area too great Use smaller probe. See Section 4.3
No Alarm When a Flaw is Detected
Possible Reason Solution
Sensitivity too low Red uce sensitivity by turning
‘Sensitivity’ clockwise
Voltage too low Increase voltage by turning ‘Voltage’
clockwise. See Section 4.6.
No Spark at Probe Tip
Possible Reason Solution
Neon indicator in handle damaged Replace neon indicator
Damaged leads Replace leads
Poor connections Clean connections. Reconnect
leads. See Section 3.0
Flat battery Recharge battery. See Section
7.0
14
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