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Reliable. Efficient.
PROUDLY MADE
IN THE USA
®
750
PUMP END ASSEMBLY
1. Inspect all pump parts (O-ring, O-ring groove, impeller hub ID, motor shaft, etc.) and clean if necessary.
2. Apply sealant to the bracket bore ID wall and around the seal case - follow sealant manufacturer’s instructions. We recommend using Gasgacinch
®
. Silicone
sealant can also be used.
3. Press the carbon graphite seal into the bracket while taking care not to touch or damage the carbon graphite face. Never touch or apply pressure to the carbon
graphite seal face.
4. Screw the (4) M-Bolts five complete turns into the threaded holes located on the motor face.
5. Mount the bracket to the motor by aligning the key holes over each bolt head, then rotate clockwise which will position the small key hole slot under each bolt
head. Tighten each bolt with a wrench to secure the bracket to the motor (8-25 inch-pounds force).
6. Carefully, lubricate the seal seat elastomer OD and impeller hub ID with water. Press the seal seat into the impeller hub making certain that the ceramic is in
evenly - the sealing surface should be parallel with the impeller hub.
7. Apply clean water to the carbon-graphite and seal seat sealing surfaces. Do not use silicon lubricants or grease.
8. Lock the shaft by placing a screwdriver blade into the shaft slot at the fan end of the motor. Thread the impeller onto the motor shaft. Thread until the impeller
securely contacts the shaft shoulder.
9. Seat the large O-ring into the bracket O-ring groove.
10. Assemble the volute onto the bracket with (6) P-Bolts (10-24 x 2 ¾
”
carriage bolts) and (6) flanged lock nuts. Tighten in a cross pattern (30 lb. in.).
11. Install the drain plug and O-ring, into the volute drain hole.
12. Before operating the Sequence
®
750, allow a proper cure time for the sealant used in step 2.
DISASSEMBLY
1. Shut off power to the motor before servicing any pump.
2. Unplug the power cord.
3. Disassemble the volute from the bracket (6) P-Bolts and (6) flanged lock nuts. The volute may remain attached to the plumbing to help simplify reinstallation.
4. Lock the shaft by placing a screwdriver blade into the shaft slot at the fan end of the motor. Unthread the impeller from the motor shaft.
5. Remove the ceramic seal seat, with rubber boot, from the impeller hub (if you are replacing the seal).
6. Loosen the (4) M-Bolts attaching the bracket to the motor. Rotate the bracket counterclockwise until the screw heads are located in the large key hole slots.
Lift off the bracket from the motor.
7. Remove the carbon-graphite seal assembly from the bracket by pressing it out from the motor-side of the bracket. Do not pry it out with a screwdriver from the
pump cavity side of the bracket (if you are replacing the seal).
NO.
DESCRIPTION
SEQUENCE
®
P/N
1
DRAIN PLUG
1000.110
2
O-RING (DRAIN PLUG)
E014B70
3
VOLUTE
750.070
4
LARGE O-RING
750.061
5
IMPELLER
750.05__*
6
SS SEAL
750.0414
7
BRACKET
750.030
8
SLINGER
750.010
9
HARDWARE KIT:
(6) P-BOLT, (6) FLANGED LOCK NUT AND WASHER, (4) M-BOLT
750.502
Note: These part numbers are only for standard models within the Sequence
®
750 series.
*750.05__ Reference page one for Impeller number (8 and 9).
P.3
2.1”
7.0”
12.7”
7.9”
2.19”
1.5” FNPT
DISCHARGE
2”
FNPT
INLET
Motor illustration is for reference only.
3.08”
VOLUTE
IMPELLER
BRACKET
M BOLT
FLANGED
LOCK NUT &
WASHER
LARGE
O-RING
SS SEAL
P-BOLT
DRAIN PLUG
& O-RING
SLINGER
1
2
3
4
5
6
9
9
8
9
7
