EasyPro EX6750-2 Manual

TWO SPEED CENTRIFUGAL • EX6750-2
Reliability You Can Count On! © 2019 EasyPro, Inc
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Installation and Service Manual
WARNING: Please read completely before you install or operate your new pump! This is an external “out-of-pond” pump!
It is NOT submersible! Do NOT allow this pump to become submerged! Never run dry! Max. case pressure.- 65 PSI!
Please ll in for future reference:
MODEL: _____________________________
SERIAL NUMBER: ____________________
DATE PURCHASED: __________________
* Please ll out the warranty registration
card in this manual.
S/N: XXXX-XXXXXX
EX6750-2
EasyPro
TYPE: STRAIGHT CENTRIFUGAL
MOTOR: NEMA C Face, 56J
HORSEPOWER: .2 (1750 RPM), 1.5 (3450 RPM)
VOLTAGE: 115
ACCESORIES: 90 CUBIC INCH STRAINER BASKETS
(11/2" & 2"),
SWING CHECK VALVES (11/2", 2", 3"),
500 CUBIC INCH STRAINER BASKETS
(11/2", 2", 3")
MODEL SPEED INLET DISCHARGE MAX FLOW
(gph)
MAX HEAD
(feet)
MAX POWER
(watts)
MAX CURRENT
(amps)
@ (volts) MOTOR
HP
MOTOR
VOLTAGE
MOTOR
ENCLOSURE
IMPELLER
EX6750-2
HIGH 1.5" 1.5" 6750 84 1453 12.7 115 1.5 115 Only ODP 4
LOW 1.5" 1.5" 3350 21 275 4.4 115 0.2 115 Only ODP 4
INLET: 11/2" FNPT
DISCHARGE: 11/2" FNPT
MATERIAL: 40% Glass-Filled Polypropylene
HARDWARE: STAINLESS STEEL
OPTIONS: SALTWATER SERVICE

TWO SPEED CENTRIFUGAL • EX6750-2
Reliability You Can Count On! © 2019 EasyPro, Inc
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INSTALLATION
Please read carefully! When properly installed this pump will provide dependable trouble-free service.
1. Locate the pump as near the water source as possible. A ooded suction situation is preferred. The pump is not self-priming, therefore, if the uid
level is below the pump, a swing check valve must be installed and the pump primed prior to start-up. (Figure 2)
2. Mount motor base to a secure, immobile foundation.
3. Use only plastic ttings on both the intake and discharge ports. Seal pipe connections with Teon™ paste. These ttings should be self-supported
and in neutral alignment with each port. (i.e. Fittings must not be forced into alignment which may cause premature line failure or damage to the
pump volute.) For non-ooded installations, a strainer basket and check valve are recommended.
4. Never restrict the intake. Keep both input and discharge lines as free of elbows and valves as possible. Always use pipe of adequate diameter.
This will reduce friction losses and maximize output.
5. This pump is not self-priming! It must not be run dry! We recommend a ooded suction installation. Please read carefully! When properly installed,
the pump will provide dependable, trouble-free service.
ELECTRICAL HOOK-UP
1. Check that supply voltages match the motor’s requirements.
2. Check motor wiring and connect, according to instructions on motor, to match supply voltage.
3. Power cord should be protected by conduit or by cable and be of proper gauge. It should be no longer than necessary.
4. Power should be drawn directly from a box with circuit breaker protection or with a fused disconnect switch.
We congratulate you on your choice of the EX Self Priming Pump! It has been carefully designed using the advantages of today’s
technology and carefully constructed to give you the dependability of yesterday. To insure proper performance, we urge you to carefully
follow the instructions in this manual. If you have any questions, call your nearest distributor or EasyPro for assistance.
PUMP
SWING CHECK
VALVE
FLOODED SUCTION
WARNING: DO NOT RUN DRY!
WARNING: ALWAYS SHUT OFF ELECTRICAL POWER BEFORE INSTALLATION AND / OR SERVICING THIS PUMP!
ALL ELECTRICAL WIRING SHOULD MEET STATE AND LOCAL ORDINANCES. IMPROPER WIRING MAY NOT ONLY BE
A SAFETY HAZARD BUT MAY PERMANENTLY DAMAGE THE MOTOR AND/OR PUMP!
BALL
VALVE
(FIGURE 2)

TWO SPEED CENTRIFUGAL • EX6750-2
Reliability You Can Count On! © 2019 EasyPro, Inc
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PUMP END ASSEMBLY
1. Clean and inspect all pump parts (0-ring, seal seats, motor shaft, etc.).
2. Apply sealant to the bracket bore ID wall and around the seal case - follow sealant mfg. instructions. We recommend using Gasgacinch®. Silicone
sealant can also be used.
3. Press carbon graphite seal into bracket while taking care not to damage carbon graphite face.
4. Place slinger (rubber washer) over motor shaft and mount bracket to motor.
5. 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.
6. Carefully lubricate carbon-graphite and ceramic sealing surfaces with CLEAN water. Do not use silicon lubricants or grease!
7. Assemble bracket to motor with four M-bolts
8. Thread impeller onto shaft and tighten! If required, remove motor end-cap and use a screwdriver on the back of motor shaft to prevent shaft rotation
while tightening. Replace motor end cap.
9. Seat large O-ring in volute slot and assemble volute to bracket with seven 1/4-20 x 2 3/4" hex cap screws, washers and nuts. Tighten in a cross
pattern (30 in-lbf).
10. Install drain plug with its O-ring in volute drain hole.
11. Before operating pump, allow a proper cure time for the sealant used in step 2.
DISASSEMBLY
1. Shut o power to motor before disconnecting any electrical wiring from the back of the motor.
2. Disassemble volute from bracket by removing the seven 1/4” - 20 threads per inch x 2 3/4” hex cap screws.
3. Remove cap covering shaft at back of motor and with a large screwdriver, prevent shaft rotation while unscrewing impeller.
4. Remove ceramic piece from impeller. (If you are replacing the seal)
5. Detach bracket from motor.
6. Remove carbon-graphite seal from bracket by pressing out from the back. Do not dig out from the front! (If you are replacing the seal)
VOLUTE
IMPELLER
WASHER &
LOCK NUT
BRACKET
M BOLT
LARGE
O-RING
SEAL
P-BOLT
& WASHER
DRAIN
PLUG
& O-RING
DESCRIPTION PART NUMBER
DRAIN PLUG 1000.110 LG
O-RING, DRAIN PLUG E014B70
VOLUTE K000.070 LG
LARGE O-RING 1000.061
IMPELLER 1000.054
SEAL 1000.0411
BRACKET K000.030 LG
SLINGER 1000.010V
HARDWARE KIT 1000.502
SLINGER
MOTOR ILLUSTRATION IS FOR REFERENCE ONLY.
1 1/2" FNPT
2.75
16.30
2.41
4.42
3.59
HIGH/LOW
TOGGLE SWITCH

TWO SPEED CENTRIFUGAL • EX6750-2
Reliability You Can Count On! © 2019 EasyPro, Inc
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MAINTENANCE
Lubrication
Motor - Permanently Lubricated ball bearings - no service required.
Rotary Seal - Requires no lubrication after assembly.
EasyPro Pond Products Limited Warranty
EasyPro Pond Products (“EasyPro”) warrants to the purchaser that this product ("Product") will be free from any mechanical
or material defects for a period of 18 months from the date of purchase. EasyPro specically does not guarantee chemical
compatibility, and expressly does not warrant units from any problems caused by chemical attack or failure due to incompatibility of
uid being pumped with pump materials of construction. This warranty only covers properly installed and maintained Products
sold by authorized EasyPro Sellers who are subject to and follow EasyPro’s quality control standards. Please note that
because EasyPro is unable to control the quality of Products sold by unauthorized sellers, unless otherwise prohibited by law,
this warranty does not cover Products purchased from unauthorized sellers.
This warranty does not cover normal wear and tear, nor any deterioration suered through overloading, improper use,
negligence, improper installation, acts of God or accident. Similarly, any modication made by the purchaser to the Product
will cause the warranty to be null and void. This warranty does not cover any cost associated with the installation or removal
of the Product subject to a warranty claim.
All returned items will be inspected to determine cause of failure before a warranty claim is approved.
The exclusive remedies provided hereunder shall, upon EasyPro’s inspection and option, be either repair or replacement of
the Product or parts covered under this warranty.
Making a Claim: A Return Authorization (“RA”) number must rst be obtained by calling EasyPro at 800-448-3873 or via email
at [email protected]. It is the purchaser’s responsibility to pay the return shipping charges. Be sure to include the RA
number, original receipt (in the form of an invoice or sales receipt), your name, your return address and your phone number
inside of the package. No warranty claims will be honored without the original receipt that shows that your purchase was
made from an Authorized EasyPro Seller. Ensure the product is properly packaged and insured for the replacement value.
Damage due to improper packaging is the responsibility of the sender.
ALL OTHER EXPRESS OR IMPLIED WARRANTIES INCLUDING MERCHANTABILITY OF FITNESS FOR A PARTICULAR
PURPOSE ARE HEREBY LIMITED IN DURATION TO THE DURATION OF THE WARRANTY AS DESCRIBED ABOVE. Some
States do not allow limitations on how long an implied warranty lasts, so the above limitations may not apply to you.
EasyPro shall not be held liable for any damages caused by defective components or materials of this Product; or for
loss incurred because of the interruption of service; or any consequential/incidental damages and expenses arising from
the production, sale, use or misuse of this Product. Some States do not allow the exclusion or limitation of incidental or
consequential damages, so the above limitation or exclusion may not apply to you.
EasyPro shall not be held liable for any loss of sh, plants or any other livestock as a result of any failure or defect of this
Product. This warranty gives you specic legal rights, and you may also have other rights that vary from State to State.
Symptom Problem Resolution
No Flow
Insucient Prime
Prime system with water and purge all air from suction piping.
Install check valve.
Insucient Power
Verify power supply and connection from panel to pump.
Verify proper voltage. Some models are dual voltage (115/230).
Flow Restriction
Ensure valves are open.
Ensure plumbing is clear, including suction strainers, check valves, etc.
Verify check valve orientation and direction of permitted ow.
Clean out leaves or other debris from basket strainer (if applicable).
Air leak Fix air leaks at ttings, connections, strainer basket etc. This typically occurs on the intake side.
System Incompatibility Verify hydraulic compatibility: i.e. pump & pipe are sized for the system.
Low Flow
Air leak Fix air leaks at ttings, connections, strainer basket etc. This typically occurs on the intake side.
System Incompatibility Verify hydraulic compatibility: i.e. pump & pipe are sized for the system.
Insucient Power
Verify power supply and connection from panel to pump.
Verify proper voltage. Some models are dual voltage (115/230).
Flow Restriction
Ensure valves are open.
Ensure plumbing is clear, including suction strainers, check valves, etc.
Clean out leaves or other debris from basket strainer (if applicable).
Insucient Prime Prime system with water and purge all air from suction piping.
Cavitation
Verify airtight plumbing on the suction plumbing especially ttings!
Clean out leaves or other debris from basket strainer (if applicable).
Increase pipe size where possible.
Decrease suction pipe length, reduce the number of elbows, etc.
Verify hydraulic compatibility: i.e. pump and pipe are sized for the system.
Sporadic Operation Insucient Power
Verify power supply and connection from panel to pump.
Verify proper voltage. Some models are dual voltage (115/230).
Poor Ventilation
Ensure adequate aiow over motor to prevent overheating.
Excessive Noise
Cavitation
Verify airtight plumbing on the suction plumbing especially ttings!
Clean out leaves or other debris from basket strainer (if applicable).
Increase pipe size where possible.
Decrease suction pipe length, reduce the number of elbows, etc.
Verify hydraulic compatibility: i.e. pump and pipe are sized for the system.
Insucient Power
Verify power supply and connection from panel to pump.
Verify proper voltage. Some models are dual voltage (115/230).
Flow Restriction
Ensure valves are open.
Ensure plumbing is clear, including suction strainers, check valves, etc.
Verify check valve orientation and direction of permitted ow.
*The pump must be drained before servicing or if stored
below freezing temperatures. Periodic replacement of
seals may be required due to normal carbon wear.
EasyPro Pond Products
4385 East 110th, Grant, MI 49327
800-448-3873 • 231-834-5537 fax
www.EasyPro.com
Name:________________________________________
Address:______________________________________
City: _______________ State: _____ Zip: __________
Model: _______ Serial Number:__________________
Date purchased: ______ Where purchased: ________
Gasgacinch® is a registered trademark of Porter Manufacturing. Noryl® is a registered trademark of the
General Electric Company. Teon® is a registered trademark of DuPont Company.
Activate your warranty by lling out this form and mailing to EasyPro Pond Products
9514 • 10/19
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