Yep. That's a Facet copy.advertised as being suitable for an SU/Weber/Dellorto/Solex/Stromberg Pierburg/Nikki Carb. Not an SU Fuel Pump. As Arwyn said, best to avoid the cheap copies and pay a little more for a genuine one.
Anyhow, to get back to the OP, you have a genuine FACET pump (the square red sticker is the giveaway) and it should click all the time so there's nothing wrong with it and it doesn't need replacing.
You can add a
Rubber Mount Kit which lessens the noise slightly but there may not be room.
