VEGA VEGACAP 82-98 - Manual (Page 34)

34 VEGACAP
6
7
4
3
1M
C
PH
C
M
1 M
Ω
Diagnostics
Check the internal connections:
• Remove the housing cover.
• Loosen the three screws with a screwdriver and remove the oscillator
from the housing.
• Measure with an ohmmeter (range M
W) the resistance values be-
tween the following contacts:
Contact 4 to middle pin (1)
The resistance must be 1 M
W.
If the resistance is less, it means there is moisture in the housing or a
failure of the electrode insulation. A possible reason could be a
noninsulated electrode which is used in conductive (moist) product.
If the resistance is higher or if the connection is interrupted, the reason
is usually a bonding failure in the adapter plate or a resistor defective
due to strong electrostatic discharge.
In both cases, the measuring probe must be repaired by VEGA.
C
M
- Meas. capacitor
C
PH
- Phase shifting capacitor
CAP E31 R