NeuroTrac
®
Sports XL Operation Manual
34
Troubleshooting
Problem:
- Cannot reach maximum mA level; or
- The unit cuts o
ff
stimulation at certain level; or
- When increase the intensity, zero mA is
ashing; or
- Power is cutting o
ff
when using
Solution:
It is normal behaviour in our and any other quality muscle stimulators (and
TENS machines), and in most cases resolves itself - please read the guidance
below.
The stimulation intensity will drop to zero if you simply press the mA+ button
and no electrodes are connected to the channel on which you increase the
intensity. You should attach a pair of electrodes to the lead wire and the lead
should be connected to the channel on which you increase the stimulation
intensity (mA).
Our unit is designed to detect any poor or intermittent connection across the
electrodes and to cut o
ff
the stimulation output (mA) when it does so. This is a
safety precaution. It is designed to prevent the user from inadvertently turning
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
(+).
* Check if both electrodes are making a sticky contact on your skin, some
electrode edges could not be stuck due to electrode wear & tear, but the
electrode should be sticking with at least 80% of it’s
eld. You may have
lots of grease after long term use, try new electrodes. You may have dry
gel on electrodes, try to make it more sticky by dropping a small amount of
water on the black (conductive) side of the electrode and leave for an hour
for the gel to absorb. Don’t use wet electrodes! Try some fresh electrodes
as electrodes loose conductivity proportionally to the use time due to grease
and gel getting drier.
* This is the most frequent reason: check if the dual conductor leadwire cable
is not broken, as it might be bent or pulled out too much which results in
no conductivity: try another cable. 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
ngers which holds the crossed pins. If you feel a mild
electrical current, this means the problem is with surface skin electrodes.
NeuroTrac
®
Sports XL Operation Manual
3
*
This unit must be used with the guidance of a Physiotherapist or
Doctor.
*
Type BF equipment, Continuous Operation.
*
Do not insert lead wires into a mains power supply.
*
Do not immerse unit into water or any other substance.
*
The unit is not protect from the ingress of water droplets from a shower
of rain if used outside the carrying case.
*
Do not use the NeuroTrac
®
Sports XL unit in the presence of a
ammable anaesthetic gas mixture and air or with Oxygen or Nitrous
Oxide.
*
If using rechargeable 9 Volt PP3 Nickel Metal Hydride batteries, be
sure to use a CE approved battery charger. Never connect the
NeuroTrac
®
Sports XL directly to a battery charger or to any other
mains powered equipment.
We advise not to use Ni-Cad rechargeable batteries.
*
Patient Electrodes are for single patient use only.
*
Keep out of reach of children.
*
Do not use this stimulator on your facial area unless you are under
strict guidance from a quali
ed Clinician.
*
Application of electrodes near the thorax may increase the risk of
cardiac
brillation.
*
Operation in close proximity (e.g. 1m) to a shortwave or microwave
therapy equipment may produce instability in the stimulator output.
*
Simultaneous connection of a patient to a high frequency surgical
equipment may result in burns at the site of the stimulator electrodes
and possible damage to the stimulator.
*
No modi
cation of this equipment is allowed!
Warnings
