Neopost IS-330 User Manual page 71

Using the Sealing Function
Hand-Feed Table Moistener
3
If your hand feed table is equipped with a moistener, you can close the envelopes by sliding
the flap under the moistener brush while feeding them into the base mail path.
Auto-Feeder Sealer (Optional)
Your Auto-Feeder can seal envelopes while printing postage or for "seal only" usage.
Move the selector at the front of the feeder right or left to change the sealing mode:
Additional information
64
Do not attempt to seal self-adhesive envelopes. Use standard flap
envelopes.
Sealer ON
Do not insert envelopes already sealed in the Feeder when the
Sealing Function is ON: the envelopes could jam.
Sealer OFF