Hello. My name is***** can help you with your question.
How is the device connected? Is it connected directly to the Mac or is it connected to the network? If it is connected to a network it's a little bit more complicated but not much really. You just have to make sure that you have the driver stalled for this specific device otherwise it may not include all the options such as scanning. If it is on the network, do you have other devices that are using it?
Of course that will be the next feat to be accomplished.
that is how it should work, but if that doesn't work there are other ways depending on what version of OS X you have.
If your scanner is also a printer, you may need to click Scan on the right before you can click Open Scan