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Plumber’s tools such as pipe wrenches are not recommended. If possible, use a ‘Rigid’ type
wrench where the smooth jaws closely fit the hexagon section.
NOTE
Thus: 1. Teflon tape thread and tighten the plastic bushing into the pipe
or tank fitting.
2. Teflon tape thread and tighten the switch into the PLASTIC
bushing by applying a wrench to the hexagon section. Repeat
steps 1 and 2 until the ARROW on the body points in the
DIRECTION OF FLOW and threads are leak tight.
Electrical Wiring
1. Remove gland nut, grommet and switch cover.
2. Strip outer jacket of electrical cord back approximately 1
1
/
4
inches.
Strip insulation from individual conductors back approximately
1
/
4
inch.
3. Slip on terminals are supplied with each switch. Remove from switch
terminals and crimp on or solder to electrical leads.
4. Feed electrical cable through gland nut, grommet and switch cover as
shown.
5. Apply slip on terminals to appropriate contacts of microswitch.
6. Slide the cover down the cable and fasten to the body of the switch
with 4 screws provided.
7. Slide the grommet down the cable until the outer jacket is level with
the small end of the grommet.
8. Push the grommet into the tapered end of the cover. Hold the cable
jacket to prevent rotation and thread the gland nut firmly on to the
cover.
Figure 1: Wiring Schematic for power applied to the load when the flow level is
less than set point (power to load interrupted when flow increases to above set
point).
FSW-50 Series w/Standard Construction Parts Diagram
10398-6. GROMMET
10398-28. LEADSCREW
10398-30. LEADSCREW NUT
10398-29. LEADSCREW RETAINING
SLEEVE
10398-27. ADJUSTING SPRING
10398-1. BODY
10398-36. 1
1
/
4
" x 1" BUSHING
SUPPLIED
10398-10. DIAPHRAGM CLAMP RING
(SONICALLY WELDED)
3 RETAINING SCREWS
FLEXIBLE DRAG STRIP ASSEMBLY
IS AVAILABLE TO REPLACE DRAG
DISK AND DRAG DISK ARM. NO
FILTER BOOT IS USED.
10398-37. DRAG STRIP
38. CLAMP WASHER
39. DAMPENER WASHER
40. SCREW x 3/8" LONG
41. 2 PLAIN WASHERS
42. SPLIT LOCK WASHER
10398-19. DRAG DISK #1 (SMALL)
20. DRAG DISK #2 (MEDIUM)
21. DRAG DISK #3 (LARGE)
WARNING
DO NOT APPLY TORQUE TO DRAG DISK
ARM SINCE IT MAY BE UNTHREADED
FROM SEAL SHAFT (A).
10398-16. DRAG DISK ARM MODEL FSW-50
17. DRAG DISK ARM MODEL FSW-51
18. DRAG DISK ARM MODEL FSW-52
10398-22. SEAL SHAFT ASSEMBLY
SUPPLIED ONLY COMPLETE WITH
A) SEAL SHAFT
B) DIAPHRAGM
C) DIAPHRAGM WASHER
D) FEED THRU SHAFT
10398-25. 2 SCREWS
26. 2 SPLIT LOCKWASHERS
10398-4. O-RING
10398-32. 2 SCREWS
33. 2 NUTS
34. 2 SPLIT LOCKWASHERS
35. 1 PLAIN WASHER
10398-24. MICROSWITCH BRACKET
COMPLETE WITH SPRING LEVER
10398-31. MICROSWITCH COMPLETE
WITH 3 SLIP-ON TERMINALS
10398-2. COVER
3. 4 RETAINING SCREWS
(NOT SHOWN)
10398-5. STRAINRELIEF NUT