1. Fit Outer casing over Inner casing. To match the
casings, check that the rail on the Inner casing
matches the groove on Outer casing. The latch of
Inner casing should be slightly to the right from the
top and the handle of Outer casing should point up.
2. Turn the hand-wheel clockwise until it stops to
draw the Inner casing with sensor into Outer casing.
Sensor insertion