[ Paul Eggert wrote in 100503 MMDigest:

> I had always assumed that the hand-held pump was an intentionally
> feeble apparatus so as not to suck too hard and damage "something"...

Hello Paul,  Actually, if used correctly the tracker-bar vacuum pump
builds up a sharp and strong momentary suction that is very effective
in dislodging dust and paper debris.  Having said that, I have
'cheated' in the past and used a vacuum cleaner with a white cloth over
the nozzle (on low suction) with no ill effects to pouches or other
components.

Kind regards,
Paul Brennan