Owner`s manual

Mercury Mambo Powered Wheelchairs Part Code: Z20945 (Rev B)
Owners Manual Page 9 of 28
3.2 POWERED WHEELCHAIR ELECTROMAGNETIC
INTERFERENCE (EMI)
Because EM energy rapidly becomes more intense as one moves closer to the transmitting antenna (source),
the EM fields from hand-held radio wave sources (transceivers) are of special concern. It is possible to
unintentionally bring high levels of EM energy very close to the control system of powerchair while using
these devices. This can affect powered wheelchair movement and braking. Therefore, the warnings listed
below are recommended to prevent possible interference with the control system of the powered wheelchair.
3.3 WARNINGS
Electromagnetic interference (EMI) from sources such as radio and TV stations, amateur radio (HAM)
transmitters, two-way radios, and mobile phones can affect powered wheelchairs. Following the warnings
listed below should reduce the chance of unintended brake release or powered wheelchair movement which
could result in serious injury.
1. Do not operate hand-held transceivers-receivers, such as citizens band (CB) radios, or turn ON
personal communication devices, such as mobile phones, while the powered wheelchair is turned ON;
2. Be aware of nearby transmitters, such as radio or TV stations, and try to avoid coming close to them;
3. If unintended movement or brake release occurs, turn the powered wheelchair OFF as soon as it is
safe;
4. Be aware that adding accessories or components, or modifying the powered wheelchair, may make it
more susceptible to EMI (Note: There is no easy way to evaluate their effect on the overall immunity
of the powered wheelchair ).
5. Report all incidents of unintended movement or brake release to the powered wheelchair
manufacturer, and note whether there is a source of EMI nearby,
3.4 IMPORTANT INFORMATION
1. 20 Volts per Metre (V/m) is a generally achievable and useful immunity level against EMI (the higher
the level, the greater the protection);
2. This product has an immunity level of 20 V/m without any accessories connected to it.