Chattanooga
™
Primera Operation Manual
31
Our unit is designed to detect any poor or intermittent connection across the
electrodes and to cut off the stimulation output (mA) when it does so. This is
a safety precaution. It is designed to prevent the user from inadvertently turn-
ing up the output stimulation current in the presence of a poor or intermittent
connection and then experiencing a large unexpected powerful surge in the
stimulation, if and when the connection is re-established.
Reasons for no connection if you use surface skin electrodes:
* Check if both electrodes are connected to the same dual conductor lead
wire, one electrode to the black connector (-) and another to red connector
(+).
* Be sure the electrodes adhere to your skin well and completely (e.g., not
worn, unattached or curled at the edges). The electrode’s conductive mate
-
rial is water-based and it will lose its adhesive qualities over time from
perspiration, oil and debris the adhesive will collect. With care, maximum
electrode lifespan can be achieved (see Care and Maintenance) but eventu-
ally the electrodes will need to be replaced.
At some point the electrodes will become dry. Moisten the adhesive surface
with a few drops of water, and apply onto the plastic film overnight. This
procedure will give you a few more days of electrode life.
If you find the electrodes will not stick due to oily skin, cleanse the skin
with soap and water, then rinse and dry the area around the electrode site.
If this does not work, try cleansing the skin with a swab impregnated with
alcohol.
* The most common reason for the device to detect a break in the circuit and
return the mA setting to zero is a non-visible break in the lead wires (see
the care and maintenance section of this manual). To check if the cable is
good, cross the red and black pin and increase mA on the unit. If the cable
conducts the electricity, the mA will go above 10mA and you would feel
the stimulation mild tickling in your fingers which holds the crossed pins.
If you feel a mild electrical current, this means the problem is with surface
skin electrodes.
