connection. A matching female threaded socket, pipe saddle or pipe tee
must be provided to fit the F29 into the pipework.
Under the end of the electrical housing on the F29 is a red hexagonal dust
cap. If you remove this dust cap you gain access to an adjustment screw that
allows the paddle preload to be reduced. As supplied the sensitivity
adjustment screw is wound fully in. In this position the paddle is at its least
sensitive. In this position it takes a substantial force from the moving water to
move the paddle. If you take a straight bladed screwdriver and wind the
sensitivity adjustment screw anti-clockwise (outward) the force against the
paddle that resists flow will be reduced.
There is a flat keying face on the cylindrical body of the paddle assembly
that keys the electrical housing onto the paddle assembly and aligns it
correctly. It is critical that the keying flat is on the downstream side and at
90 degrees to the axis of the pipework (see sketch). To secure the
electrical housing onto the paddle assembly an Allen head cap screw is
supplied. The cap screw should be screwed fully through the hole provided
on the underside of the electrical housing and should be securely tightened
using a 3mm A/F Allen key (supplied).
To allow easy access to the flow switch’s paddle, the electrical housing of
the F29 can be detached from the paddle assembly. Removing the electrical
housing allows access to the paddle without the need to disconnect the
electrical connections to the F29. To remove the electrical assembly, switch
off the system’s power and undo and completely remove the locking screw
(see diagram). Once the locking screw is removed, lift the electrical housing
straight off (do not twist it when doing this). Once the electrical housing has
been removed, the paddle assembly can be unscrewed from the pipework
using the spanner flats on the body of the assembly. Simply reverse this
procedure to refit the electrical housing to the F29.
SENSITIVITY ADJUSTMENT
ATTACHING THE ELECTRICAL HOUSING
DETACHING THE ELECTRICAL HOUSING
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