Xylem MM 613F Series FS4-3T General Purpose Liquid Flow Switch - Manual (Page 7)

7
a. Place cover on flow switch and turn on power. Initiate fluid
flow through the system. Observe the device being
activated by the flow switch to determine if device is
operating as required.
b. Turn off fluid flow to determine if device is operating
as required.
c. Repeat initiating and turning off fluid flow several times to
test flow switch and device for proper operation.
- If operating as required, put system into ser vice.
- If not operating as required, flow switch may need
to be adjusted.
OFF
ON
STEP 4 - Testing
SECTION 5 - Adjustment
ADJUSTING SCREW
FLOW OPENS CIRCUIT
FLOW
CLOSES CIRCUIT
COMMON
1
2
3
Adjustment is necessary only if required flow/no
flow setpoints are above factory set minimum.
a. Turn off power. Remove electric enclosure
cover.
b. Turn adjusting screw clockwise (1/8 turn) to
increase setpoint.
c. Place the cover on the flow switch and turn on
power.
d. Test the operation of the flow switch after
each adjustment.
IMPORTANT: Do not attempt to lower flow switch
setpoint from original factory minimum setting.
Lowering (turning adjusting screw counterclock-
wise) the setpoint from original factory setting
may cause erratic flow switch operation.