It is normal that rubber electrodes degrade in function of time. The resistance will raise irregularly
over the surface of the electrode. As a result the current path will be the highest on the points with the
lowest resistance and there will be a risk of burning the patient’s skin.
In order to assure that the customer always works with accessories that are in perfect condition, the
unit constantly monitors the resistance of the output circuit.
When this resistance passes a certain level, the unit will give a warning ‘poor connection to the
patient’ and the intensity will be reduced to 0 mA.
However the unit always measures the resistance of the output circuit, GymnaUniphy nv.
recommends to replace the rubber electrodes twice a year.
The vacuum electrodes have a metal electrode and will not degrade in function of time. Therefore the
Phyaction Guidance E/C has no vacuum electrode test.
However it is recommended to check and clean the surface of the vacuum electrodes twice a year.
In case of any irregularity replace the electrode.
Before checking the electrodes, it is important that the patient cable has been checked and has proved
to have a perfect condition ( see point 5.1.1)
Please follow the procedure below to check both the rubber and the vacuum electrodes.
Select ‘plate electrode test’ in the system settings menu.
Connect a patient cable to the channel A and put the electrode on top of each other.
Turn up the intensity to 10 V and move with the plugs and cable to detect a bad contact.
The unit will now display whether the electrodes are ‘ok’ or ‘bad’.
Phyaction Guidance E/C – service manual version 0.5 Page 31
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