Vaisala PR-23 Series - Page 198

10. Turn the wheel 90° counterclockwise.
a. Open the locking latch on outer casing.
b
. Rotate outer casing handle 60° counterclockwise.
11. Turn the handwheel counterclockwise to drop the thread (1), and lift o outer casing.
PR-23 Series User Guide
IM-EN-PR23-E
196