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96154 • Revision K Safety xxxvii
Service Safety Door
The optional service safety door is a sliding door that is activated by the maintenance
key. This maintenance key is controlled only by service representatives and is used
when a failing component in the front of the library needs to be replaced.
The service safety door moves either to the left or right, depending upon which
maintenance lock is opened. When the maintenance key is inserted into its lock and
turned, the safety door separates the forward maintenance area from the library
interior. This allows the service representative to safely replace a failing front frame
component while the library remains fully operational.
The Service Safety Door is an optional feature for libraries with four HandBots.
However, it is required for redundant (eight) HandBot operation.
The service safety door moves either to the left or right, depending upon which
maintenance lock is opened. When the maintenance key is inserted into its lock and
turned, the safety door separates the forward maintenance area from the library
interior. This allows the service representative to safely replace a failing front frame
component while the library remains fully operational.
Interior Lighting
The interior of the library is always illuminated with white LEDs on the ceiling. The
ceiling of the Customer Interface Module has yellow (hazard) LEDs that flash when the
library is in service mode and for approximately 10 seconds when the doors are closed
to alert anyone who may still be inside the library.
SL8500 Servo Power Interrupt
An additional safety feature is the servo power interrupt (SPI). If a library motor is
determined to be out-of-range, the processor generates an SPI to turn off drive voltage
to the faulty motor. This prevents a servo runaway condition until the cause of the
problem can be determined.