EasyPro EX6750-2 Manual

TWO SPEED CENTRIFUGAL • EX6750-2
Reliability You Can Count On! © 2010 EasyPro, Inc
Pg. 1
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 fill in for future reference:
MODEL:_____________________________
SERIAL NUMBER:____________________
DATE PURCHASED: __________________
* Please fill 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! © 2010 EasyPro, Inc
Pg. 2
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 flooded suction situation is preferred. The pump is not self-priming, therefore, if the fluid
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 fittings on both the intake and discharge ports. Seal pipe connections with Teflon™ paste. These fittings 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-flooded 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 flooded 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 congratulateyouon yourchoice of theEX SelfPriming Pump! It hasbeen carefullydesigned using theadvantages of today’s technol-
ogy 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! © 2010 EasyPro, Inc
Pg. 3
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 ce-
ramic 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 pat-
tern (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 off 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! © 2010 EasyPro, Inc
Pg. 4
MAINTENANCE
Lubrication
Motor - Permanently Lubricated ball bearings - no service required.
Rotary Seal - Requires no lubrication after assembly.
EASYPRO LIMITED WARRANTY
This product is warranted to the initial purchaser to be free of defects in materials and workmanship at the time of initial purchase and for a period of 18 months. In
the event this product malfunctions within 18 months from the date of purchase, the sole obligation of EasyPro, Incorporated (hereinafter referred to as EP) will be
to repair the unit or replace with an equivalent new or factory refurbished unit at EP’s discretion, subject to the following conditions:
1. You MUST call EP for a return authorization (RA#) number prior to returning, pumps returned without an RA# will be refused.
2. The malfunction is proved attributable to a defect in materials or workmanship, including repairs performed under this warranty. Malfunction for any other
reason — including but not limited to misuse, negligence, accident, tampering with parts, incorrect wiring, improper installation — will not be remedied
under this warranty.
3. EP specifically does not guarantee chemical compatibility, and expressly does not warrant units from any problems caused by chemical attack or failure due
to incompatibility of fluid being pumped with pump materials of construction.
4. All warranty repairs must be performed by EP or an EP authorized company. Purchaser must retain the purchase receipt and present it with this certificate
as proof of ownership and entitlement to warranty repairs. Unauthorized repairs will not be compensated by EP, are not the responsibility of EP, and if such
repairs damage the product, such damages are not remedied under this warranty.
5. Purchaser shall bear all shipping, packing and insurance costs and all other costs, excluding labor and parts necessary to effectuate repairs under
this warranty.
6. Periodic check-ups are not covered by this warranty.
7. This warranty is in lieu of all other express warranties which now or hereafter might otherwise arise with respect to this product. Any and all limited warranties,
including the warranties of merchantability and fitness for particular purpose, shall have no greater duration than the duration period of the express written
warranty applicable to this product, and shall terminate automatically the expiration of such duration period. Some states do not allow limitations on how
long an implied warranty lasts, so the above limitation may not apply to you. No action shall be brought for breach of any implied or express warranty after
one year subsequent to the expiration of the duration period of the express written warranty.
8. Incidental and consequential damages caused by malfunction, defect, or otherwise, and with respect to breach of any express or implied warranty, are
not the responsibility of EP, and, to the extent permitted by law, are hereby excluded both for property damage and, to the extent not unconscionable, for
personal injury damage. 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.
9. This warranty does not apply to any malfunction arising out of any application of this product other than normal use, unless such application is upon request
specifically approved in writing by EP.
10. The provisions of this warranty are severable and if any provision shall be deemed invalid, the remaining provisions shall remain in full force and effect.
11. Rights under this warranty are not assignable without the express prior consent in writing by EP and, regardless of the terms of such consent in writing, such
assignee shall have no greater rights than his assignor had against EP.
Symptom Problem Resolution
No Flow
Insufficient Prime
Prime system with water and purge all air from suction piping.
Install check valve.
Insufficient 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 flow.
Clean out leaves or other debris from basket strainer (if applicable).
Air leak Fix air leaks at fittings, 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 fittings, 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.
Insufficient 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).
Insufficient Prime Prime system with water and purge all air from suction piping.
Cavitation
Verify airtight plumbing on the suction plumbing especially fittings!
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 Insufficient Power
Verify power supply and connection from panel to pump.
Verify proper voltage. Some models are dual voltage (115/230).
Poor Ventilation
Ensure adequate aiflow over motor to prevent overheating.
Excessive Noise
Cavitation
Verify airtight plumbing on the suction plumbing especially fittings!
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.
Insufficient 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 flow.
*Thepumpmustbe drainedbeforeservicing orifstored
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.EasyProPondProducts.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. Teflon®is a registered trademark of DuPont Company.
Activate your warranty by filling out this form and mailing to EasyPro Pond Products
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