Take it loose from the faucet and flip the lever down on the filter in the on position. Take the cap off and remove the filter. Blow hard through it. You should hear a whirling noise of a gear, like a windmill. If not, I use a water dental pic to pulsate into it and clean it out. This is what makes the light work and when flow goes down, the light changes color. It's all mechanical. No battery. Just free up the gear so it turns freely to work the light. If standing in front of a mirror, you can actually see the light come on. PUR doesn't tell you this because they want you to purchase another one.
Question edited for correct spelling of maker 'Noen' to 'Moen'.
'Fix' as in it is leaking? Or tighten it down because it is wobbly, or something completely different?
Well, we can have a one on one seminar by the internet. I've been a pumpman for 20 years. I can share with you my experience (household pumps, suibmersible pumps, turbine pumps, gear pumps, piston pumps, dewatering pumps, mud pumps, trash pumps, mining pumps, solids handling pump, etc....) Just take your pick. Just send in your e-mail for assistance. God bless.
It is leaking due to a defective mechanical seal. It needs to be replaced. To replace it, is to take the pumpcase off by taking off the bolts that hold it. Then, take the impeller off to take the mechanical seal behind it. Put the replacement in, and reassemble the pump. Just get in touch with us by e-mail to get more assistance.
Move the lever or turn the knob. Check the stop tap under the sink. Make sure the faucet control knob or lever is tight, There is normally a removable cover that hides the screw..
Question edited for clarity, full 'make model (what it is)'.
This a Menards special. To remove handles, look for a small hole hidden from the front. They take a small Allen Key.