Hudson Medical Optima Seating System - Manual (Page 7)

ELECTROMAGNETIC INTERFERENCE ELECTROMAGNETIC INTERFERENCE ELECTROMAGNETIC INTERFERENCE ELECTROMAGNETIC INTERFERENCE
LIMITS SPECIFICATIONS
The Optima™ seating system incorporates 3 types of electronic limits. The
type and number of limits are determined by the Optima's™ configuration.
RECLINE LIMIT
Installed on recline or tilt recliner systems to prevent the back from exceed-
ing 175º from the horizontal. (See Figure 8)
DRIVE LOCKOUT LIMIT
Installed as standard on all OPTIMA Seat Lift systems. This limit inhibits the
power base driving function when the Optima™ back exceeds 15º with
respect to the vertical. (See Figure 9)
SEAT LIFT DRIVE LOCKOUT LIMIT
Installed as standard on all Optima™ systems. This limit inhibits the power
base’s driving function when the Optima™ seat is raised vertically from the
lowest/neutral seat location. (See Figure 10)
FIGURE 8
NOTE:
Adjusting or disabling any limits by
unauthorized persons may result in
personal or property damage and
may void the warranty. If any limit
should become damaged, mis-aligned,
or disconnected, return the Optima™
seating system to the normal seating
position and contact your local dealer
or representative as soon as possible.
Tilt/Recline Limit
DLO Limit
RECLINE OR TILT RECLINE CONFIGURATION
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ELECTROMAGNETIC INTERFERENCE ELECTROMAGNETIC INTERFERENCE ELECTROMAGNETIC INTERFERENCE ELECTROMAGNETIC INTERFERENCE
POWERED WHEELCHAIR
ELECTROMAGNETIC INTERFERENCE (EMI)
Because EMI energy rapidly becomes more intense as one moves closer to the
transmitting antenna (source), the EMI fields from hand-held radio wave sources
(transceivers) are of special concern. It is possible to unintentionally bring high
levels of EMI energy very close to the powered wheelchair’s control system
while using these devices. This can affect powered wheelchair movement and
braking. Therefore, the warnings listed on page 10 are recommended to prevent
possible interference with the control system of the powered wheelchair.
WARNINGS
Electromagnetic interference (EMI) from sources such as radio and TV stations,
amateur radio (HAM) transmitters, two-way radios, and cellular phones can
affect powered wheelchairs and motorized scooters. 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 (transmitters-receivers), such as
citizen band (CB) radios, or turn ON personal communication devices,
such as cellular 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.
IMPORTANT INFORMATION
20 volts per meter (V/m) is a generally achievable and useful immunity level
against EMI (as of May 1994) (the higher the level, the greater the protection).
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