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I contacted Peter Mecklenburg at Museum Services Corporation
regarding recent concerns about Nilfisk vacuums. He gave me permission to
post his reply (see below). Should anyone wish to contact him directly his
email is pete@xxxxxxxxxxxxxxxxxxxxxxxxxxxxx.
Sincerely,
Rebekah Njaa
The new Niflisk vacuum cleaner that I
have explored, the ATTIX 550-2M is a lot more powerful than the older
model. It might have potential for suction tables but maybe not for
textile cleaning purposes.
Nilfisk's variable speed controller on
its "old" units is an off the shelf power controller from Grainger's (pn 4X797-6
motor controller 115 VAC/ 50/60 Hz 10 amp). We use the same item on our
single motor MSC Control Consoles. It is relative easy and inexpensive to
replace if it burns up. I would pass the word that the old units will be
fine as long as replacement power controllers are available from other sources
like Graingers. MSC replaced them in the past and is available to do so
for those needing this service. As long as the same power controller is
replaced, no changes in UL listings are necessary.
Tiger-vac vacuum cleaners, (which I like
more because of its power and flexibility) use a different power controller, in
that it has a larger cooling sink for the electronics which do the power
control. It is also off the shelf, readily available and relatively
inexpensive.
The best motor controller is the one we
use on our dual motor MSC Control Consoles. It has full motor control from
low to high but it can burn out as the paper conservators at the Met will
testify. The price has dropped on this unit and it is now
relatively inexpensive.
I hope this information helps.
Please contact me with any questions. Drop by when you're in the
neighborhood.
Regards,
Peter Mecklenburg
MuseuM Services
Corporation |