WEF Discussions — Now on LinkedIn!

WEF is pleased to announce the creation of free LinkedIn groups associated with its technical discussion forum topics. Through these LinkedIn groups, members will be able to view and participate in discussions, as well as communicate with one another via direct messages. Share your experiences and knowledge, ask questions and respond to other discussions as frequently as you like!

You must have a LinkedIn profile to join a LinkedIn group; you can create your profile here. If you already have a LinkedIn profile, all you need to do is submit a request to join one or all of the following groups:

Water Environment Federation (Main) | Biosolids | Collection Systems | Nutrients | Stormwater 
Utility Management | Water Reuse | Water for Jobs | Watershed Management | Laboratory Practices 

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Centrifuge Selection
Posted: Wednesday, October 13, 2010 11:35 PM
Joined: 10/6/2010
Posts: 1

Next year our facility will be installing 3 centrifuge units to replace 2 existing BFPs. We have researched various manufacturers references and am hearing not so good things about Andritz service and customer support. Prior to receiving that information, we were leaning heavily toward Andritz, however this information concerns us. If any facilities out there have a Andritz centrifuge installed, please let us know your experience with 1) the accuracy of their O&M manuals 2) start-up training 3) maintenance and or technical support from their service facility in Texas. PLEASE, I DO NOT want to hear from Andritz. Let your customers speak for themselves. Thank you...

Posted: Thursday, April 14, 2011 5:25 PM

We have experienced many problems with the organization that you mention. Specifically the service department. More specifically one person in their service department. Our operators are reluctant to call them for advice due to the treatment they have received over the phone. I suggest that you shop around. If we had to do it over again I can tell you without hesitation it would be someone other than Andritz.  


Jim from Ohio

Peter Lamontagne
Posted: Monday, November 28, 2011 10:07 AM
Joined: 4/2/2010
Posts: 1

The reality is that the sale price of centrifuges is quite low, and margins are minimal.  Service is the money maker, and few manufacturers give you the detailed information needed to change bearings and seals in their instruction book, and fewer still will send a service person out to actually fix the centrifuge. 


 I think it's safe to say that the service organizations are unhelpful in giving the owner a clear, details account of what is wrong with their centrifuge, and what are the options in fixing it. 


 When they inspect a centrifuge they measure a bunch of dimensions, but rarely give you a copy of that inspection sheet. When something is out of spec, they don't tell you how far out it is, and generally do not discuss options in repair.  For example, if a main bearing surface is damaged, machining the surface, welding it back up is the m ore expensive fix, but also the most durable.  Machining it back and hard chrome plating it is less costly, and less durable. 


Remember that other than for warranty there is little reason to send it back to the manufacturer.  Many manufacturers will repair anybody's centrifuge.

Peter LaMontagne,  peter@thecentrifugeguy.com