This device is suitable for use in hospital environments except for near
active HF surgical equipment or in the RF shielded room of magnetic
resonance imaging equipment where the intensity of EM disturbances is
high.
WARNING: use of this device adjacent to or stacked with other equipment
should be avoided because it could result in improper operation.
Cross contamination: Patients with skin infection in the treatment area
should have precautions taken in order to avoid cross-contamination.
Consideration must be given to the current densities for any electrode used
with the 960/970 Unit. Current densities greater than 2 mA rms/cm
2
are not
recommended because of the risk of burning. All the standard EMS
conductive rubber electrodes may be used up to the maximum output of
the unit without exceeding this figure. When using other electrodes, the
maximum safe output current should be assessed before use. First
estimate the effective contact area of the electrode in square cm, and then
apply the following formula: -
rms output current (mA) = Area of electrode (cm
2
) x 2
The ratio of the rms to the peak current for the different operating modes is
given in the technical specification section of this manual.
The output indication on the display shows the peak output voltage or the
peak output current in mA depending upon the selected mode of operation.
When using direct current, extreme care must be taken to ensure the
patient's safety from electrochemical burning. In particular care must be
taken to avoid uneven pressure on the electrodes causing high local
current density.
Electrodes must not be applied where there are cuts or abrasions.
Maintenance: For continuous and safe operation, regular maintenance and
inspection by EMS authorized technicians is required. For the maintenance
procedures and schedule, refer to the Maintenance section of this manual.
Cleaning: Proper cleaning of the electrodes and main unit is required. For
cleaning instructions, refer to the Maintenance chapter of this manual
Modification of the EMS960/970 is not permitted and may result in a
hazardous situation.
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