Flotec FP5722 - Manual (Page 8)

Maintenance 8
For parts or assistance, call Flotec Customer Service at 1-800-365-6832
Pump Disassembly
Hazardous voltage. Can shock, burn or
cause death. Disconnect power to pump before servicing.
Tools required:
1. 7/16” open end wrench (2 required).
2. Flat blade screwdriver with insulated handle.
3. Work bench with vise recommended.
4. Pliers or similar tool.
5. Pipe wrench.
Impeller Stack Replacement (See Figure 7)
Remove pump from service and mount vertically in vise
(if available) motor side down. Clamp motor at center. It
may be desirable to wrap motor with a shop rag to pro-
tect outside surface.
Proceed as follows:
1. Attach pipe wrench to flats on discharge connection
and turn clockwise to remove (left hand threads).
2. Remove screws holding motor canopy and remove
canopy. Pull canopy straight off as shown.
Capacitor voltage may be hazardous.
To discharge capacitor, hold insulated handle screw-
driver by the handle and short capacitor terminals
together. Do not touch metal screwdriver blade or
capacitor terminals.
3. Unscrew capacitor clamp and remove capacitor. Do not
disconnect capacitor wires. Slide 7/16” open end wrench
in behind spring loaded centrifugal switch as shown.
Place on motor shaft flats to hold shaft stationary.
4. With one 7/16” wrench in place on motor shaft,
place second wrench on shaft hex at pump end and
unscrew impeller stack by turning counter-clockwise.
5. Once loose from motor shaft, hold shaft by snap ring
using a pliers or similar tool, and pull stack from
shell. You may have to apply a back and forth motion
to break stack loose from shell.
To assemble with replacement impeller stack, keep pump
in the vertical position, motor down, and reverse instruc-
tions 1 through 5.
Assembly hints:
A. Apply a soapy water solution to suction and dis-
chage O-Rings to ease seating of shell.
B. Make sure mechanical shaft seal spring is in prop-
er position on motor shaft.
Disconnect from
power source.
Motor end view with
canopy removed
Motor Canopy
See View A-A
View A-A
Centrifugal
Switch
7/16" Open
End Wrench
Capacitor
Impeller
Stack
Snap
Ring
Remove with
Counter-clockwise
rotation.
1
3
3
4
5
L2
L1
A
B
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7 / 16
A
Discharge
Connection
Remove with
clockwise
rotation.
2
Figure 7 – Impeller stack replacement.