Metering Segments (sheet separators) ensure separation of pieces as they are fed. They wear and must be replaced periodically. If you experience double sheet feeding and cannot adjust the separators to prevent it, replace them.
You can order sheet separators at pitneybowes.com/uk, supply item number 90-103-09s.
Watch this video or follow the steps below to learn how to replace the metering segments (sheet separators):
UPDATED: November 04, 2020