APG FLR Series user manual - Manual (Page 17)

Rev. A5, 10/09 FLR Series
17
Automation Products Group, Inc.
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8b. For “normally closed” (NC) switching (code A & B switches), subtract 18
mm from the measurement taken in step 7 and record the result. This distance
will be used to adjust the reed switch along the internal brass rod. The 18 mm
is subtracted to compensate for both the offset of the reed switch from the
actuation point (-12 mm), and the plug in the bottom of the stem (-6 mm).
Refer to drawings below.
Normally Closed Switching for Code “A” & “B” Switches
For normally closed (NC) switching
action with a Code "A" or "B" switch,
the center point of reed switch assembly
is set 12mm below the actuation point.
Indention designates
top of float
ON
OFF
12 mm
Actuation
Point
9 mm
9 mm
Plug
Approx. 6 mm
Brass Rod