According to this list of drivers available from Apple, the Epson Perfection 3170 scanner driver is available. So if you connect the scanner to the Mac via a correctly functioning USB cable, and the Mac is connected to the Internet, then the supporting driver should be downloaded and installed.
I recommend buying the VueScan application to scan with, ESPECIALLY if you have the Epson Perfection 3170 auto sheet feeder like we do. Image Capture is real basic and doesn't support the sheet feeder OR automatically open our scanned PDFs in Adobe Acrobat for editing / OCR like VueScan does.
Look for the trial version on MacUpdate or the VueScan developer's website to try before you buy.