10
TRIMMING THE PADDLE
The paddle of the F60 can be cut down to suit the specific pipe size and
intended application. Cut the paddle using a hacksaw or tin snips so it
clears the sides of the pipe socket and protrudes approximately half to two
thirds of the way across the pipe when the controller is screwed into the
pipework. If the flow rate will only ever be fairly low, the paddle should be
cut longer, perhaps until it only clears the bottom of the pipe by 3 to 5mm.
If you are unsure as to what length the paddle should be, a paddle trimming
calculator is available at.
http://www.kelco.com.au/paddle-trimming-calculator-2
If you know what the expected flow rate is the calculator allows you to enter
your pipe diameter and paddle dimensions. It will then determine if the
selected paddle dimensions are adequate for the application. Spare
paddles to suit the F60 are available from Kelco or from your distributor.
To fit the paddle assembly into the pipework, apply Teflon tape or thread
sealing compound to the thread and use a suitable spanner and the
spanner flats provided on the paddle assembly (directly above the process
connection thread). Under no circumstances should the electrical housing
be twisted or used to screw the paddle assembly into the pipework, or to
align the controller with the axis of the pipework. To do so will irreparably
damage the controller and void its warranty. When correctly installed there
should be a minimum 4mm gap between the top of the pipe socket and the
top of the thread on the F60. Never apply water pressure to the F60 unless
the electrical head is fitted and the M4 locking screw is in place and fully
tightened. The F60 can be installed in either vertical or horizontal pipe.
When installed in vertical pipework flow should preferably be in an upward
direction past the controller’s paddle. The F60 has a 1” BSP process
connection. A matching female threaded socket, pipe saddle or pipe tee
must be provided to fit the controller into pipework.
ATTACHING THE ELECTRICAL HOUSING
Once the paddle assembly has been installed, fit the electrical housing
onto the spigot on top of the paddle assembly. Take care that the sealing
O-ring is on the top stem of the paddle assembly is in location and in good