Owner`s manual

Mercury Mambo Micro Powerchair Owner’s Handbook (Page 6) Part code: Z20943-00

Attention: Other types of hand-held devices, such as cordless phones, laptop computers,

AM/FM radios, TV sets, CD players, and cassette players, and small appliances, such as

electric shavers and hair dryers, so far as we know, are not likely to cause EMI problems

to your powerchair.

2.4.2 Powerchair Electromagnetic Interference

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 the

powerchair while using these devices. This can affect powerchair movement and braking.

Therefore, the warnings listed below are recommended to prevent possible interference with the

control system of the powerchair.

2.4.3 Warnings

Electromagnetic interference (EMI) from sources such as radio and TV stations, amateur radio

(HAM) transmitters, two-way radios, and mobile phones can affect powerchairs. Following the

warnings listed below should reduce the chance of unintended brake release or powerchair

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 powerchair 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 powerchair OFF as soon as it is

safe;

4. Be aware that adding accessories or components, or modifying the powerchair, may make it

more susceptible to EMI (Note: There is no easy way to evaluate their effect on the

overall immunity of the powerchair).

5. Report all incidents of unintended movement or brake release to the powerchair

manufacturer, and note whether there is a source of EMI nearby.

2.4.4 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.