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ACORN 80 Maintenance & Service Manual
SECTION 2
Description Of Operation
2.3 Safety Features
The Stairlift will not start unless there is sufficient power in the batteries to complete the journey The Stairlift will
be stopped by:
Mechanical End Stops on the drive rack - if lift final limit switches fail.
Drive Motor Brake applied - if the battery power supply is lost.
Over-speed Governor (OSG) - if lift exceeds a pre-set speed.
Anti-tilt mechanism to prevent the carriage from tipping excessively in the event of a levelling failure.
Any one of the five pressure-sensitive edges (PSEs) striking an obstruction. There are two either side of the
carriage (A), two either side of the footrest (B) and one under the footrest (C).