WCF application pool recycling issues

We have a developed a WinForms application using WCF (service hosted in IIS). The application polls every 45 seconds and fails intermittently. Using WCF tracing we have discovered the following errors on the server side:

The communication object, System.ServiceModel.Channels. ReliableReplySessionChannel, cannot be used for communication because it has been Aborted.

The communication object, System.ServiceModel.Channels. TransportReplyChannelAcceptor+ TransportReplyChannel, cannot be used for communication because it has been Aborted.

and on the client side:

The remote endpoint no longer recognizes this sequence. This is most likely due to an abort on the remote endpoint. The value of wsrm:Identifier is not a known Sequence identifier. The reliable session was faulted.

In every occurrence, the service log trace shows application pool recycling immediately before the error.

I was wondering if someone could explain the meaning of these messages (I am new to WCF) or where I can find more information. I have read Learning WCF by Michele Leroux Bustamante numerous times and have searched the web for best practice examples (on how to handle this error condition/ channel fault). Unfortunately I can't find anything I can specifically apply to our situation.

 

Thank you for any help you can provide.