Samsung AC018JN4DCH/AA Service Manual page 19

Disassembly and Reassembly
Parts
3 Bell-Mouth
4 Drain Pan
3-4
Procedure
1) Unscrew the screw fixed on the Bell-Mouth.
(Use +Screw Driver)
2) Push the Bell-Mouth in the direction
opposite to where it's installed on the
Control-Box to remove it.
1) Unscrew the screws on the 4 corners
of the indoor unit. (Use +Screw Driver)
2) Remove the Drain Pan from the indoor unit.
Remark
Samsung Electronics