Aprilaire 8553 - Manual (Page 26)

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Figure 2 Figure 3
d) Gently push in and pry up on the handle of the
screwdriver until the lock tab disengages from the
catch tab (you should feel or hear a click –
see Figure 2).
e) After the latch releases, grip the thermostat panel at
the bottom corners and swing it up and away from
the base to completely separate (see Figure 3).
110-790B 7/11/01 3:11 PM Page 26