INSTALLATION AND SERVICE MANUAL
Contents
1. SEQUENCE 750 INSTALLATION AND SERVICE MANUAL Please fill in for future reference MODEL SERIAL NUMBER DATE PURCHASED Please fill out the warranty registration card in this manual or online at www mdminc com SEQUENCE XXXXSEQXX S N XXXX XXXXXX STRAIGHT CENTRIFUGAL MOTOR INDUSTRIAL DUTY 1 8 HP 1 PHASE TEFC 1550 RPM 115 VAC MOTOR 8 FT 3 PRONGED CORD DC 750 Sun Pump 12 VDC 24 VDC with 23 leads INLET 2 FNPT DISCHARGE 1 1 2 FNPT MATERIAL 40 GLASS FILLED POLYPROPYLENE WITH NORYL IMPELLER HARDWARE STAINLESS STEEL OPTIONS SALTWATER SERVICE ACCESORIES 90 CUBIC INCH STRAINER BASKETS 1 5 amp 2 SWING CHECK VALVES 1 5 2 3 Model 3600SEQ12 4200SEQ12 12VDC5 12VDC8 12VDC9 24VDC5 24VDC8 NLET a 9 a 9 a 2 a DISCHARGE 5 1 5 1 5 1 5 1 5 1 5 1 5 AX FLOW gph 3600 4200 2280 2820 3060 2520 2910 AX HEAD feet 1 6 0 Tr 7 3 8 0 8 0 AX POWER watts 39 160 43 52 58 67 70 AX CURRENT amps 40 1 56 3 6 4 3 4 3 2 8 2 9 volts 15 115 12 12 12 24 24 OTOR HP 8 1 8 12 VDC 12 VDC 12 VDC 24 VDC 24 VDC OTOR ENCLOSURE TEFC TEFC TENV TENV TENV TENV TENV MPELLER 8 9 5 8 9 5 8 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 s2. 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 amp pipe are sized for the system 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 amp pipe are sized for the system Verify power supply and connection from panel to pump Insuficient Power Verify ae ae Some models are rite eR LIS7250 Ensure valves are open Flow Restriction Ensure plumbing is clear including suction strainers check valves etc Low Flow Clean out leaves or other debris from basket strainer if applicable Insufficient Prime Prime system with water and purge all air from suction piping Verify airtight plumbing on the suction plumbing especially fittings Clean out leaves or other debris from basket strainer if applicable Cavitation 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 Sporadic Operation Verify proper voltage Some models are dual voltage 115 230 Poor Ventilation Ensure adequate aiflow o
3. NY STANDING WATER THIS POWER CORD SHOULD ONLY BE PLUGGED INTO A PROPERLY INSTALLED 115 VAC GFI RECEPTACLE ALWAYS TEST CYCLE A GFI RECEPTACLE TO DETERMINE ITS CONDITION BEFORE USE Proudly Assembled in the USA 5 Us ta i n ab e I Effic i e n t 2008 MDM INC 10 ll 12 SEQUENCE 750 PUMP END ASSEMBLY Inspect all pump parts O ring O ring groove impeller hub ID motor shaft etc and clean if necessary 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 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 Screw four M Bolts five complete turns into the threaded holes located on the motor face 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 Ib in 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 Apply CLEAN water to the carbon graphite and seal seat sealing surfaces Do not use silicon lubricants or grease Lock
4. are not to misplace the small metal impeller washer Remove the ceramic with rubber boot from the impeller hub if you are replacing the seal Loosen the four M Bolts attaching the bracket to the motor Rotate the bracket counter clock wise until the screw heads are located in the large key hole slots Lift off the bracket from the motor 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 xs Sustainable Efficient oz HON NC SEQUENCE 750 MAINTENANCE Lubrication Motor Permanently Lubricated ball bearings no service required Rotary Seal Requires no lubrication after assembly 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 Symptom Problem Resolution 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 Ensure valves are open No Flow f Flow Restriction Ensure plumbing is clear including suction strainers check valves etc Verify check valve orientation and direction of permitted flow Clean
5. ings should be self supported and in neutral alignment with each port i e Fittings must not be forced into port alignment which may cause premature line failure or damage to the pump volute Never restrict the inlet Keep both inlet 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 Never use an inlet line of smaller diameter than the discharge line Minimize the suction lift For additional plumbing tips review MDM s website www mdminc com for pond plumbing and pump installation hints me Ip BALL VALVE KAASA ASAS NASAS ry BALL VALVE FLOODED SUCTION PUMP SUCTION LIFT SWING CHECK VALVE 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 NOTE THE PUMP MOTOR IS DESIGNED FOR 115 VAC 60HZ POWER ONLY WARNING SHUT OFF ELECTRICAL POWER BEFORE INSTALLATION AND OR SERVICING THIS PUMP SUN PUMP IS DESIGNED FOR 12VDC amp 24VDC 230V 50HZ MOTORS AVAILABLE CON TACT YOUR SUPPLIER FOR INFORMATION ELECTRICAL HOOK UP CAREFULLY EXAMINE THE POWER CORD BEFORE USE DO NOT USE THIS POWER CORD IF THERE IS ANY VISIBLE DAMAGE DO NOT USE THIS POWER CORD IN WATER OR IF THE MOTOR OR ELECTRICAL RECEPTACLE IS IN CONTACT WITH A
6. rovisions shall remain in full force and effect 10 Rights under this warranty are not assignable without the express prior consent in writing by MDM and regardless of the terms of such consent in writing such assignee shall have no greater rights than his assignor had against MDM 11 After the warranty period units requiring maintenance or repair may qualify for our exchange program The exchange program provides an opportunity to repair replace your pump and or motor at a nominal charge Please refer to the Exchange Policy or contact MDM for details and current pricing y MDM INCORPORATED MDM 325 Karen Lane Colorado Springs CO 80907 aa 7 Phone 719 634 8202 Fax 719 634 8317 WWW MDMINC COM 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 Sequence is a registered trademark of MDM Incorporated Sequence 750 Installation Manual indd Adobe Indesign CS 2 0 05 28 08 2008 MDM INC
7. rranties which now or hereafter might otherwise arise with respect to this product Any and all lim ited 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 7 Incidental and consequential damages caused by malfunction defect or otherwise and with respect to breach of any express or implied war ranty are not the responsibility of MDM 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 8 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 MDM 9 The provisions of this warranty are severable and if any provision shall be deemed invalid the remaining p
8. s performed under this warranty Malfunction for any other reason including but not limited to misuse negligence accident or tampering with parts incorrect wiring or improper installation will not be remedied under this warranty 2 MDM specifically does not guarantee chemical compatibility and expressly does not warrant units from any problems caused by chemical at tack or failure due to incompatibility of fluid being pumped with pump materials of construction Purchaser shall also retain and present to MDM evidence of purchaser s compatibility tests under actual operating conditions 3 All warranty repairs must be performed by MDM or an MDM 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 MDM and are not the responsibility of MDM and if such repairs damage the product such damages are not remedied under this warranty 4 Purchaser shall bear all shipping packing and insurance costs and all other costs excluding labor and parts necessary to effectuate repairs under this warranty State Zip Serial Number Activate your warranty by filling out this form and mailing to MDM Inc or by registering on line at www mdminc com Sustainable Efficient 5 Periodic check ups are not covered by this warranty 6 This warranty is in lieu of all other express wa
9. 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 Insure that the small impeller washer is in place on the impeller Thread until the washer securely contacts the shaft shoulder Seat the large O ring into the bracket O ring groove Assemble the volute onto the bracket with six P Bolts 10 24 x 2 3 4 carriage bolts and six flanged lock nuts Tighten in a cross pattern 30 Ib in Install the drain plug and O ring into the volute drain hole Before operating the Sequence 750 allow a proper cure time for the sealant used in step 2 DESCRIPTION SEQUENCE P N i IMPELLER IMPELLER WASHER SS SEA K L Note These part numbers are only for standard models within the Sequence 750 series 750 05__ Reference page one for VOLUTE FLANGED LOCK NUT Impeller number 5 8 9 1 5 FNPT DISCHARGE DRAIN PLUG amp O RING 2 19 E 2 INLET 3 86 FNPT 0 25 DRAIN PORT FNPT PLUGGED DISASSEMBLY Shut off power to the motor before servicing any pump Unplug the power cord Disassemble the volute from the bracket six P Bolts and six flanged lock nuts The volute may remain attached to the plumbing to help simplify re installation 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 Take c
10. ubmerged Never run dry Max case pressure 25 PSI Proudly Assembled in the USA 5 Us ta i n ab e Effic e n t 2008 MDM INC SEQUENCE 750 We congratulate you on your choice of the Sequence 750 centrifugal pump Its leading edge design provides you with high output at a minimal operating cost It is carefully constructed to give you long term reliable service To insure proper performance we urge you to carefully follow the instructions in this manual If you have any questions please call your supplier for assistance INSTALLATION Please read carefully When properly installed the Sequence 750 will provide dependable trouble free service Do not submerse the unit in water it is not a submersible pump Do not allow the pump to become submerged during transient periods such as heavy rain run off etc DC 750 Sun Pump needs protection from rain Locate the pump as near the water source as possible A flooded suction is preferred The pump is not self priming Therefore if the fluid level is below the pump a swing check valve must be installed below water level The pump and inlet line must be primed prior to start up Do not run pump dry For non flooded installations a strainer basket and check valve are recommended Mount the motor base to a secure immobile foundation Use only plastic fittings on both the inlet and discharge ports Seal the inlet amp discharge fittings with Teflon pipe dope These fitt
11. ver motor to prevent overheating Verify airtight plumbing on the suction plumbing especially fittings Clean out leaves or other debris from basket strainer if applicable Cavitation Increase pipe size where possible Decrease suction pipe length reduce the number of elbows etc Excessive Noise 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 Ensure valves are open Flow Restriction Ensure plumbing is clear including suction strainers check valves etc Verify check valve orientation and direction of permitted flow MDM INCORPORATED 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 3 years for all Sequence products except 12 and 24 VDC Sun Pump The DC 750 Sun Pump has a 1 year warranty In the event this product malfunc tions within three years from the date of purchase the sole obligation of MDM Incorporated hereinafter referred to as MDM will be to repair the unit or replace with an equivalent new or factory refurbished unit at MDM s discretion subject to the following conditions 1 The malfunction is proved attributable to a defect in materials or workmanship including repair
Download Pdf Manuals
Related Search