IF there is any chance of food contact you will need to have the routine testing.
IF you don't need to test it, do put something into writing as to exactly what it is used for, picture of machine, etc and show that to the Auditor (the document is not an SQF requirement, but it's a nice touch for the Auditor.
So, with all that said it appears you do not need to test it.
All the Best,
All Rights Reserved,
Without Prejudice,
Glenn Oster.
Glenn Oster Consulting, LLC
SQF Full System Co-Creator & Implementation/Certification Consulting
Internal Auditor Training | eConsultant | Equity-Share Private Label Developers
http://www.GlennOster.com -- 774.563.6161