If you remove the drain tray, there is another plastic cover with screws. remove that too. inside on the right side you will see a black box with a yellow round cap. peel the cap off then you can see a screw. there is also a label that describe the direction of rotation. adjust it there. this is to adjust the pressure of steam. as your machine is increasing steam pressure, it also increases the water temp.
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If you remove the drain tray, there is another plastic cover with screws. remove that too. inside on the right side you will see a black box with a yellow round cap. peel the cap off then you can see a screw. there is also a label that describe the direction of rotation. adjust it there. this is to adjust the pressure of steam. as your machine is increasing steam pressure, it also increases the water temp.