Thanks for the question. Instructions for installing or replacing the charcoal filter can be found on page 22 of your SMH1816S user manual. The manual should have come packaged with your microwave, but can also be downloaded as a pdf file from this website for easy reference. You'll see that the charcoal filter should be installed behind the vent grill, and doing so requires removing the 2 screws on the top of the grill, then sliding it to the left and pulling it straight out. Please refer to the attached image of the grill from a similar model showing one of the hooks that holds the grill in place when installed; these hooks are the reason the grill needs to slide to the left before being pulled straight out.
With regard to the installation instructions, these too can be downloaded from this website through the following link: http://ars.samsung.com/customer/usa...
Please note that these instructions are the same for all Samsung over the range microwaves, including your SMH1816S, though it is important to confirm the blower is angled appropriately for your desired venting.
- Ms. Samsung
answered 2 years, 6 months ago