Maintenance - Pentair SSJ Series Owner's Manual

Maintenance

L2
L2
B
B
A A
L1
L1
To avoid electrical
shock hazard, use
insulated-handle
screwdriver to short
capacitor terminals
as shown.
Figure 19: Hold Shaft to Unscrew
Impeller
Figure 20
Figure 21: Press in Seal
2874 0697
PUMP DISASSEMBLY
The seal consists primarily of two parts: a rotating member and a floating
seat.
damaged. Read instructions and handle the seal with care.
1. Be sure disconnect switch is off.
2. Remove wiring from pump.
3. Remove discharge piping to pump.
4. Remove cap screws holding base volute to pump adapter. Piping to the
well need not be disturbed. Lift pump motor and adapter assembly off
base volute.
174 0697
5. Dismantle pump: Remove canopy, and by holding the centrifugal
switch with a wrench, the impeller can be unscrewed off the pump
shaft, exposing the seal (Figure 19). The motor shaft has right hand
threads.
REMOVAL OF OLD SEAL
1. After unscrewing the impeller, carefully remove the rotating part of
the seal by prying up on the sealing washer using two screwdrivers
(Figure 20).
2. Pry loose the floating seat by applying screwdriver between seat and
cavity in casting. Remove rubber seat ring. Clean cavity from which
seal was removed and clean motor shaft.
INSTALLATION OF NEW SEAL
1. Clean polished surface of floating seat with clean cloth.
2. Wet the O-Ring in the ceramic seat with soap solution.
3. Press seat into cavity firmly and squarely, with finger pressure
(Figure 21). If seat will not locate properly, place cardboard washer
over polished face of seat and use piece of 3/4" standard pipe for
pressing purposes.
4. Dispose of cardboard washer and again make sure that polished surface
of seat is free of dirt or foreign particles and has not been scratched or
damaged by insertion. Install adapter on motor; be sure regulator lines
up with pressure switch.
5. Inspect shaft to make sure it is clean. Clean face of sealing washer with
clean cloth.
1067b 0697
6. Apply soap solution to inside diameter and outer face of rubber drive
ring. Slide seal assembly on shaft (sealing face first), until rubber drive
ring slides over shaft shoulder (See Figure 22, Page 12).
7. Screw impeller on shaft until impeller hub hits shaft shoulder. This will
automatically locate seal in place and move the sealing washer face up
against floating seat face (Figure 23, Page 12).
8. Reassemble remainder of pump in order of disassembly.
The highly polished and lapped faces of the seal are easily
11