Magma EB7R-x8 User Manual page 31

Remove all of these screws in order to open the enclosure.
Slide the enclosure cover backward to disengage it from the guides at
the front of the enclosure by firmly grasping the edges of the cover lip
and pulling the cover backward about 1" until it clears the front hold-
down, and then lift the cover off.
Be careful to store the cover to avoid damage while you are working
inside the chassis.
CAUTION
When replacing the enclosure cover, be sure that the front edge of
the cover slides completely under the front lip of the enclosure.
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