Susan,

Our vault system is exactly the same kind of system. It replaced a pan
system years ago, because the pan system started leaking. I was not here
for that, but my understanding is that a pan system involves the air
blowing over standing water insted of injection of steam into the air
stream, as in the Liebert unit. I personally do not like the idea of
standing water anywhere near my art, but I guess it would depend on where
the unit is in relation to the objects. We too have to replace the filter
periodically, but I would wonder if that is outweighed by the maintenance
required for the pan system. Are your people suggesting that there will be
a significant reduction in maintenance cost/time involved?

Mark Janzen
Registrar/Collections Manager
Edwin A. Ulrich Museum of Art
Martin H. Bush Outdoor Sculpture Collection
Wichita State University
(316)978-5850


                                                                           
             Susan English                                                 
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             03/04/2005 10:19                                              
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Does any one on the list have experience with Liebert hvac units?  We have
a unit that provides heating, air conditioning and humidity to one of our
galleries.  We have the steam canister type.  Since we run our unit
continuously, the steam canisters get mucked up with lime deposits from the
hard water and need to be replaced every 500-1000 hours.  Our hvac
contractor is recommending we replace the canister system with a pan
system, which would require maintenance but not replacement.

Any body out there have experience with Lieberts?

Thanks.

Susan English
Executive Director
Joliet Area Historical Museum


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