Descaling your Braun BrewSense KF7170 coffee maker is an essential task to keep the machine running smoothly and ensure that your coffee tastes great. Over time, calcium deposits, or scale, can build up inside the coffee machine due to hard water, which can affect the taste of your coffee and hinder the efficiency of your machine. If you’ve noticed that the clean light on your Braun BrewSense KF7170 has turned on, it’s a signal that it’s time to descale. Here’s a step-by-step guide on how to descale your coffee maker and fix the clean light issue.

### What You Will Need
– Braun descaling solution or any other suitable descaling agent (white vinegar can be used as an alternative)
– Fresh water
– A large container (like a jug or pitcher)

### Steps to Descale Braun BrewSense KF7170

#### Step 1: Prepare the Solution
Firstly, you need to prepare your descaling solution according to the instructions provided by the manufacturer. If you are using white vinegar as an alternative, mix equal parts of water and white vinegar.

#### Step 2: Empty the Coffee Maker
Make sure there’s no coffee or coffee filter left in the machine. Empty any water from the water reservoir.

#### Step 3: Add Descaling Solution
Pour the prepared descaling solution into the water reservoir up to its maximum level.

#### Step 4: Start Descaling Cycle
Place your container (jug or pitcher) where you would normally place a carafe. This is necessary as during descaling, liquid will pour out of the brew spout. Proceed by pressing and holding the “CLEAN” button until it lights up. The Braun BrewSense will begin its cleaning cycle which generally involves heating up and circulating the solution through its system to break down limescale deposits.

#### Step 5: Rinse Thoroughly
Once the cycle is complete, discard any solution from both – inside of carafe and from water reservoir. Refill reservoir with fresh cold water and run at least two full brewing cycles just with clean water; this ensures all traces of vinegar or descaler are completely rinsed out.

#### Step 6: Allow it to Dry
After rinsing, leave all components out to air dry before assembling back together.

#### Final Step: Resetting Clean Light Indicator
To reset the clean light indicator after you’ve finished descaling; turn off your coffee maker for a moment then turn it back on while holding down both ‘brew strength’ and ‘clean’ buttons simultaneously for a few seconds until all lights flash briefly indicating reset is complete.

### Conclusion
Regular maintenance like descaling improves not only taste quality but also extends lifespan of your appliance significantly. The process takes just about an hour but doing so every few months (frequency depending on hardness of water in use) pays off with each perfectly brewed cup! Remember always consult user manual for specific instructions regarding maintenance of your particular model.