Ransburg GMS Ground Monitoring System A12520-XXXX - Manual (Page 23)

LN-9265-09.2
23
CALIBRATION
1. Place the part to be checked in front of the Ground Monitor probe
2. Assure target distance is 4” (±1”)
3. Use a 1 KiloVolt (KV) megger to verify a good earth ground is present on part. The NFPA states a good ground as 1
Meg Ohm or less value.
4. Press the “Control” button on the controller. The entire LED bar (green yellow, and red) under status display will light
up to indicate the unit is in calibration mode.
5. Press the red “Override” button located on the back of the controller (you may need to hold the button in for a sec-
ond). This button manually begins a cycle.
6. When the high voltage comes on allow the numbers under “Status” to settle and then press the “Control” and “Reset”
buttons at the same time to store the calibration value. The value will typically be in the rang of 60 – 80. The default
value is 55.
7. When the calibration value is accepted the LED light bar will turn off.
8. You are now ready to operate the ground monitor.
Override Button
Back of Controller Front of Controller
Control Button Reset Button
LED Bar
Special Keys:
1 and Reset - Pressing these keys together will display the saved set point in the status window. The value will display
for 5 seconds, and then go back to regular mode
2 and Reset - Pressing these keys together will display the cumulative amount of hours the HV has been on.
3 and Reset - Will reset the set point and timers to factory default values. The unit must be turned off and back on for
the default values to take effect.
Defaults:
Timer 1 = 3.0 seconds Timer 3 = 3.0 seconds
Timer 2 = 5.0 seconds Setpoint = 55