PLP manufacture inswing and glider powered doors either electrical or pneumatic in operation.

The door leaf construction is an aluminium extrusion profile surrounding toughened glass, screen printed if required, together with relevant mechanism mounting brackets and handpoles shaped and coloured to assist reduced mobility passengers.

The door leaf assembly traditionally has gasket mounted glass but a bonded version is also possible. The door leaf can either be flat or profiled to match the vehicle aperture condition.

The movement of the door is controlled via open/close push buttons that interface with a shelfplate arrangement located at the head of the door aperture, linking to the door leaves via floor mounted pillar tubes.

The shelfplate contains the electric/pneumatic control gear that is pre-assembled by PLP and holds the logic dictating the speed of door operation, sensitive edge detection, 5 kph interlock etc.

Audible warnings are also incorporated into the product where required to alert passengers to door movement, and optional lighting can be installed to assist safe passageway in times of darkness.

The PLP powered door package includes the door leaf assembly with pillar tubes, shelfplate, aperture weather sealing kit and ancillary items including the buttons, pipework etc.

Maintenance procedure
All mechanisms, hinges, and rubber seals must be regularly checked for wear and cleaned and lubricated as required. All framework and glass must be cleaned with a non-abrasive cleaner.