Reliability You Can Count On!
EXT Series
© 2019 EasyPro, Inc
Pg. 3
IN THE USA
ASSEMBLED
PUMP END ASSEMBLY
1. Clean and inspect all pump parts (O-rings, seal heads, seal seats, motor shaft, etc.).
2. Place slinger (rubber washer) over motor shaft. Pump/bracket/impeller assembly can now be pulled back from volute.
3. Where applicable, check motor for rotation prior to assembling pump to motor.
4. For metallic seal head assembly installation: apply sealant to the bracket bore ID wall and around the seal case - follow sealant
mfg instructions. We recommend using Gasgacinch
®
, Perrmatex
®
, or 3M
™
1300L. Silicone sealant can also be used. Press seal
head into bracket using a tool that will apply pressure to the seal case shoulder; do not apply pressure to the carbon or silicon
carbide seal head.
5. For seal seat installation: 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 bottomed and sits evenly - the sealing surface should be parallel with the
impeller hub.
6. Align bracket with holes in motor face and mount bracket to motor with four
3
/
8
" ID x 1" OD washers and four
3
/
8
" - 16 x 1" long
stainless steel hex cap screws using
9
/
16
" wrench. (Use
1
/
2
" - 13 x 1" long stainless steel hex head cap screws and
1
/
2
" washers for
frame sizes 213JM and above, using
3
/
4
" wrench.)
7. Assemble
3
/
16
" square x 1
1
/
2
" long stainless steel key in groove of motor shaft.
8. Assemble
3
/
8
" - 16 x 1
3
/
4
" long stainless steel threaded rod with hex recess into end of motor shaft, using
3
/
16
" allen wrench.
Threaded rod should extend from shaft approximately .720 +/- .050" (reference Fig. 1 of insert drawing).
9. Carefully clean carbon-graphite and ceramic sealing surfaces with lint-free tissue and alcohol. Do not use silicone lubricants
or grease!
10. Slide impeller on motor shaft, aligned with key.
11. Assemble special impeller washer over threaded rod. Secure with
3
/
8
" - 16 stainless steel hex jam nut using
9
/
16
" long reach socket;
hold impeller while tightening.
12. Lightly grease cap O-ring with silicone grease, assemble cap with O-ring over threaded rod and tighten with 1
1
/
16
" socket. Do not
over tighten.
13. Assemble large O-ring in groove in bracket. Use silicone grease only if necessary.
14. Assemble volute to bracket using five
5
/
16
" - 18 x 4" long stainless steel hex head cap screws, ten
5
/
16
" flatwashers, five
5
/
16
"
lockwashers and five
5
/
16
" - 18 hex nuts. Use three
5
/
16
" - 18 x 1
1
/
4
" long stainless steel hex head cap screws with flat washers,
lockwashers and nuts in the threaded inserts in the volute), using
1
/
2
" wrench.
15. Assemble drain plug in volute drain hole and tighten. Use teflon tape or equivalent.
16. Before operating pump, allow a proper cure time for the sealant used in step 4.
17. Note: For assembling a discharge flange, use
5
/
8
" x 2
1
/
4
" long bolts, narrow washers, and hex jam nuts (provided in the discharge
piping hardware kit).
DISASSEMBLY
1. Shut off power to motor before disconnecting any electrical wiring from the motor.
2. Disassemble volute from bracket by removing the five
5
/
16
" - 18 x 4" long hex cap screws, and the three
5
/
16
" - 18 x 1
1
/
4
" hex cap
screws. Pump/bracket/impeller assembly may now be pulled back from the volute.
3. Remove impeller eye ‘cap’ by unscrewing counterclockwise. Remove
3
/
8
" nut using
9
/
16
" socket wrench, unscrew
counterclockwise. Slide impeller off of motor shaft.
4. Remove ceramic piece from impeller. Eye protection is strongly recommended. (If you are replacing the seal)
5. Detach bracket from motor.
6. Remove mechanical seal from bracket by pressing out from the back. Do not dig out from the front! (If you are replacing the seal).
