The horizontal channel between the hood and chimney is the part that holds the most oil. It must be cleaned in certain periods.

Cleaning Method
Horizontal channels are where oil and soot accumulates the most. If the horizontal channel has sufficient dimensions, it is entered inside, if not, the control cover is opened at a sufficient distance and the oil and soot inside are taken with hand tools. It is waited for a while after the chemical drug is applied. It is rubbed with a dish cloth. It is cleaned with a cloth. The process is completed after the opened control covers are assembled and sealed.