4
TURN OFF YOUR POWER WHEELCHAIR AS SOON AS POSSIBLE WHEN EXPERIENCING
ANY OF THE FOLLOWING:
1.
Unintentional motions.
2.
Unintended of uncontrollable direction.
3.
Unexpected brake release.
The FDA has written to the manufacturers of power wheelchairs, asking them to test their new
products to be sure they provide a reasonable degree of immunity against EMI. The letter says that
powered wheelchairs should have an immunity level of at least 30 Vim, which provide a reasonable
degree of protection against the more common sources of EMI. The higher the level, the greater the
protection.