EasyPro PCA75 Manual de instalación y mantenimiento - Página 4
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PUMP DISASSEMBLY
All moving parts are located in the rear sub-assembly of this pump.
Tools required:
1.
/
" Allen wrench
3
32
2.
/
" &
/
" open end wrench
7
9
16
16
3. Small and large flat bladed screwdrivers
4. #3 Phillips screw driver
Disassembly and repair of the motor sub-assembly
can be made as follows:
1. At the main panel turn off the circuit breaker for the pump.
2. Close all necessary valves on inlet and discharge lines and drain the pump by removing both drain plugs. It will drain faster if you loosen the lid.
3. Loosen and remove the six
4. Pull the rear sub-assembly away from the volute (the volute can remain attached to the plumbing).
5. Loosen and remove the two
6. Remove the set screw from the impeller eye (if it has one). To do this, hold the impeller stationary and turn the set screw clockwise (it has a left-
handed thread).
7. Hold the motor shaft stationary (by removing the cap on the opposite end of the motor and inserting a screw driver in the slot, or a wrench on the
flats, depending on the motor design) and unscrew the impeller by turning it counterclockwise.
8. Loosen and remove the four
9. If you wish to remove the shaft seal, place the bracket face down on a flat surface and press out the carbon/spring seal from the back side. Never
pry it out from the front. Carefully remove the ceramic from the back impeller hub with a small straight screw driver.
10. Clean the bracket, seal bore housing and the motor shaft as necessary.
PUMP ASSEMBLY
1. To install a new shaft seal, clean or replace the o-ring in the bore. If there is no o-ring, clean the
bore and apply a bead of 100% silicon sealant inside the bore and around the top edge.
2. Press the seal into the bore (without touching or putting pressure on the delicate carbon face)
by pushing on the stainless steel collar. A large socket or a pipe nipple can be used.
3. Clean the impeller hub as necessary and press in the ceramic. Make sure that it is sitting flat.
(The polished white ceramic face must be showing — not the rubber boot!)
4. Remount the bracket to the motor. Tighten the four M-Bolts (
5. Screw the impeller clockwise onto the motor shaft while holding the motor shaft stationary until
it makes firm contact. Screw in the impeller set screw (if it has one), with its gasket in place,
counterclockwise to tighten.
6. Mount the diffuser onto the bracket. Make sure the plastic pins fit into the holes in the bracket,
then tighten both Allen head screws.
7. Make sure the diffuser o-ring and bracket gasket are clean and properly seated.
8. Assemble the motor sub-assembly to the volute using the P-Bolts (
tightened. Tighten all six bolts uniformly and in a cross pattern.
9. Insert both drain plugs and tighten. Install strainer basket and fill the pump with water.
10. Reinstall the lid and quick clamp, and turn it clockwise until snug.
CAUTION
1. The polished and lapped faces of the seal could be damaged if not handled with care.
2. DO NOT RUN THE PUMP DRY. It must be filled with water before it is turned on.
PCA SERIES PUMPS
/
" P-bolts that hold the volute and the bracket together.
3
8
/
" Allen screws that hold the diffuser to the bracket.
3
32
/
" M-bolts that hold the bracket to the motor face.
3
8
Reliability You Can Count On!
www.easypro.com • 800-448-3873
/
" cap screws).
3
8
/
" cap screws). Do not tighten until all six P-bolts are in place and finger
3
8
P-Bolt
Bracket
Bracket Gasket
Seal
Impeller
Set Screw
with Gasket
© 2019 EasyPro, Inc
5730 • 10/19
Motor
— Pg. 4