WIKA FLS Serie Betriebsanleitung Seite 12

5.2 Mounting
 Observe the torque values of screws specified in pipefitting work.
 In the selection of the mounting material (seals, bolts, washers and
nuts), take the process conditions into account. The suitability of the
sealing must be specified with regard to the medium and its vapours. In
addition, ensure it has corresponding corrosion resistance.
 Ensure that the sealing faces of the vessel and float switch are clean
and do not show any mechanical damage
 Mount the float switch either via mounting thread (3) or mounting flange
(not illustrated).
 The guide tube (4) should not be inclined more than a maximum of 30°
to the vertical.
 If the geometry of the float (6) does not fit through the process connec-
tion, the float must be removed before mounting.
 For this, before removal, mark the position of the float stops with a wa-
terproof pen
 Mark the mounting position of the floats (e.g. "Up")
 After the float switch has been mounted, the float should be re-at-
tached within the inside of the tank (pay attention to the mounting po-
sition!).
 Float stops (5) must then be re-at-
tached at the marked points.
 The number of floats and also the
position of the float stops are de-
pendent upon the dimension and the
number of switch points.
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Operating instructions, float switch, model FLS