MOUNTING AND INSTALLATION
The Model IFS may be mounted in a horizontal
pipe line or a vertical pipe line with upward liquid
flow. It is not recommended for installations
where flow is downward. When mounted in a
horizontal pipe line the switch will trip at a lower
flow rate than shown in Fig. 7.
Mount the device in a section of pipe where there
is a straight run of at least 5 pipe diameters on
each side of the flow switch. Do not locate adja-
cent to valves, elbows or orifices. The switch
should be mounted so the terminals or wire leads
are easily accessible for wiring.
IFS models with flexible paddles are furnished
with 4 paddles. Rigid paddle models are fur-
nished with 2 paddles. For pipe sizes 1", 2", 3" or
6", use the paddles provided. Intermediate sizes
may be trimmed from the appropriate paddle
using the paddle template in Fig. 5. The paddle
must not touch the inside of the pipe or bind in
any way. Paddles smaller than the actual pipe
size should be used for added support and higher
sensitivity, see Fig. 3. The paddles must be prop-
erly attached and the screw that holds the paddle
must be securely tightened.
For a 1" pipe application mount in a standard 1" x
1" x 1" tee. Use a reducing tee for larger sizes of
pipe to keep flow switch close to pipe and provide
adequate paddle length in the flow stream.
Example: Use a 2" x 2" x 1" tee for 2" pipe. A
weldolet may also be used. Screw the device into
the tee fitting as shown in Fig. 4. The flat of the
paddle must be at a right angle to the flow. The
arrow on the side of the bushing must point in the
direction of flow, see Fig. 1.
FIG. 1
Sensitivity Adjustment Note:
Turn screw clockwise to increase the flow rate
required to activate the switch.
Turn screw counter-clockwise to decrease the
flow rate required to activate the switch.
FIG. 2