Xylem MM 619F Series FS6 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 service.
- If not operating as required, flow switch may need
to be adjusted.
OFF
ON
STEP 4 - Testing
STEP 5 - Adjustment
FLOW
Adjustment
Lever Screw
Flow
No Flow 0.12
0.06
Flow
No Flow
The Flow Rates Shown
Are Averages, May
Vary –10%
2.5
1.5
MAXIMUM
ADJUSTMENT
MINIMUM
ADJUSTMENT
Adjustment is necessary only if required flow/no
flow setpoints are above factory set minimum.
a. Turn off power.
b. Locate adjustment lever on bottom of unit.
Note that lever will be perpendicular to flow
switch body.
c. Loosen adjustment lever screw but DO NOT
REMOVE.
d. Turn adjustment lever counter-clockwise to
increase setpoint. Maximum setting is with
adjustment lever parallel with flow switch body.
e. Tighten adjustment lever screw.
f. Turn on power.
g. Test the operation of the flow switch after
each adjustment.
ADJUSTMENT DATA
(All flow rates given in GPM - gallons per minute)