Laura/Mark
Our system has steam canisters that have
to be replaced every 500-1000 hours at a cost of $250 plus labor.
Sometimes they just are heavily covered in lime, other times it looks like they
burned on the inside. Our supply lines and float on the condensate pump
get mucked up and have caused flooding, too. The hvac contractor thought
we could save some $ by going to the pan system.
Susan
P.S. Our unit is not actually
in the gallery, but provides hvac for a gallery. It is located in the
lower level mechanical area
.
From: Museum
discussion list [mailto:
Sent: Friday, March 04, 2005 10:52
AM
To:
Subject: Re: Liebert Units
Mark/Susan-
We, too, have a Liebert system serving our archives. All in all, it has been a
huge and very expensive disappointment. Ours has the pan and, yes, there are 3
or 4 high intensity light tubes that heat the water in the pan to create steam,
providing the humidity. Our water here is quite alkaline, so even filters on
the supply line clog quickly, the lime builds up in the pan and on the float
rendering the latter inoperable and causing flooding. Our maintenance folks
hate the thing because it is so labor intensive and designed such that even
minor adjustments entail major disassembly to enable access. I have provided
enough donuts now that they kindly come by and check on it once a week. On the really
bright side, I now have a lovely wet-vac parked right next to it at all
times...
Best of luck to us all,
Laura
Laura Nightengale
Head of Collections
The
At 10:27 AM 3/4/2005, you wrote:
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
Martin H. Bush Outdoor Sculpture Collection
(316)978-5850
Susan
English
<s.english@JOLIET
MUSEUM.ORG>
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Subject
Liebert
Units
03/04/2005
10:19
AM
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
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