MDM SEQUENCE PRIMER Series Manual

© MDM INC.
WWW.MDMINC.COM
Efficiency and Longevity.
PROUDLY MADE
IN THE USA
© MDM INC.
WWW.MDMINC.COM
Efficiency and Longevity.
PROUDLY MADE
IN THE USA
INSTALLATION AND SERVICE MANUAL
TYPE: SELF PRIMING CENTRIFUGAL
MOTOR: NEMA 56Y
HORSEPOWER: 1/3, 1/2 (1750 RPM) 2 (3450 RPM)
PRIMER ALPHA: 2” FNPT INLET AND DISCHARGE WITH 2” & 2 1/2” SLIP ADAPTERS
PRIMER CHAMPION: 2” FNPT INLET AND DISCHARGE WITH 2” SLIP ADAPTERS
MATERIAL: GLASS-FILLED POLYPROPYLENE
HARDWARE: STAINLESS STEEL HARDWARE
OPTIONS: SALTWATER SERVICE
ACCESORIES: SWING CHECK VALVES (1.5”, 2”, 3”)
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.
Model 3700PRM21 4900PRM21 6600PRM24 6800PRM19 7800PRM24 6300PRM77 8100PRM81 9300PRM83
INLET 2” 2” 2” 2” 2” 2” 2” 2”
DISCHARGE 2” 2” 2” 2” 2” 2” 2” 2”
MAX FLOW (gph) 3700 4900 6600 6800 7800 6300 8100 9300
MAX HEAD (feet) 21’ 21’ 24’ 19’ 24’ 77’ 81’ 83”
MAX POWER (watts) 228 310 457 369 504 1496 1807 2222
MAX CURRENT (amps) 2.76 @115V 3.37 @115V 4.61 @115V 3.93 @115V 5.02 @115V 8.7 @ 230 9.8 @ 230 11.4 @ 230
VOLTS 115/230 115/230 115/230 115/230 115/230 230 /115 230 /115 230 /115
MOTOR HP 1/2, 1/3 1/2, 1/3 1/2, 1/3 1/2, 1/3 1/2, 1/3 2 2 2
MOTOR TYPE 56Y 56Y 56Y 56Y 56Y 56Y 56Y 56Y
MOTOR ENCLOSURE TEFC TEFC TEFC TEFC TEFC ODP ODP ODP
®PRIMER ®
PRIMER
MAINTENANCE WARNING: EYE PROTECTION IS STRONGLY RECOMMENED
Lubrication
Motor - Permanently Lubricated ball bearings - no service required.
Rotary Seal - Requires no lubrication after assembly.
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).
Insufficient Prime
Prime system with water and purge all air from suction piping. The primer series pumps use low
RPM motors and achieving full system prime could take multiple hours. *This resolution pertains
only to the Primer Champion and the Primer Alpha models.
Air leak Fix air leaks at fittings, connections, priming pot lid, etc. This typically occurs on the intake side.
The priming pot lid o-ring can be lubricated with silicone grease.
System Incompatibility Verify hydraulic compatibility: i.e. pump & pipe are sized for the system.
Low Flow
Air leak Fix air leaks at fittings, connections, priming pot lid, etc. This typically occurs on the intake side.
The priming pot lid o-ring can be lubricated with silicone grease.
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.
PRIMER ALPHAPRIMER CHAMPION
S/N: XXXX-XXXXXX
XXXXPRMXX
PRIMER CHAMPION PRIMER ALPHA PRIMER POWER
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. Compilation Installation Manual 2017.indd Adobe Indesign CC 03-28-17
PLEASE FILL IN FOR FUTURE REFERENCE:
MODEL: ___________________________
SERIAL NUMBER: ____________________
DATE PURCHASED: ___________________
* PLEASE FILL OUT THE WARRANTY REGISTRATION
CARD INCLUDED WITH THIS PRODUCT OR ONLINE
AT: WWW.MDMINC.COM
*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.
MDM INCORPORATED
3345 N. Cascade Ave • Colorado Springs, CO • 80907
Toll Free Phone [phone] • Fax [phone]
www.mdminc.com • [email protected]

© MDM INC.
WWW.MDMINC.COM
Efficiency and Longevity.
PROUDLY MADE
IN THE USA
© MDM INC.
WWW.MDMINC.COM
Efficiency and Longevity.
PROUDLY MADE
IN THE USA
MATERIAL: GLASS-FILLED POLYPROPYLENE
HARDWARE: STAINLESS STEEL HARDWARE
OPTIONS: SALTWATER SERVICE
ACCESORIES: SWING CHECK VALVES (1.5”, 2”, 3”)
INSTALLATION
Please read carefully. When properly installed the Sequence®Primer will provide dependable trouble-free service.
1. Locate pump as near to the water source as possible. A flooded suction configuration is mandatory. This pump is self-priming, however, there must be fluid in the pump
for it to function properly. A vertically installed check valve is recommended for non-flooded suction. (Figure 1)
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.)
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 must not be run dry. We recommend a flooded suction installation. Please read carefully. When properly installed, the Sequence®pump will provide
dependable, trouble-free service.
6. Before starting pump, the priming pot must be filled with water.
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 Sequence®Primer 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 MDM for assistance.
PRIMER
SWING CHECK VALVE
FLOODED SUCTION
WARNING: DO NOT RUN DRY.
(FIGURE 1)
BALL VALVE
PUMP END ASSEMBLY
1. Inspect all pump parts (O-ring, O-ring groove, impeller hub ID, motor shaft, etc.) and clean if necessary.
2. If replacing the seal, apply sealant in bracket bore hole and around seal case according to sealant instructions. We recommend using Gasgacinch®. Silicone sealant can also be used.
3. Press seal into bracket while taking care not to damage seal face.
4. Place slinger (rubber washer) over motor shaft and mount bracket to motor.
5. If replacing the seal, carefully lubricate the boot around ceramic piece and press it into the impeller hub making certain that the ceramic is in evenly. The sealing
surface should be parallel with the impeller hub.
6. Apply CLEAN water to the carbon-graphite and seal seat sealing surfaces. Do not use silicon lubricants or grease.
7. Mount bracket to motor face.
8. Thread impeller onto shaft and install o-ring and screw. 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. Place diffuser over impeller and tighten allen bolts used to hold diffuser in place. Note: Be sure diffuser is in an upright position. (The word “top” appears on the
diffuser as an indicator).
10. Seat O-ring on diffuser. Assemble diffuser to bracket with 2 allen screws.
11. Seat O-ring in bracket slot and assemble casing to bracket.
12. Install drain plugs with its O-rings in casing drain holes.
DISASSEMBLY
1. Shut off power to motor before disconnecting any electrical wiring.
2. Close all necessary valves on inlet and discharge lines and drain the pump by removing both drain plugs. The water will drain faster if you loosen the lid.
3. Disassemble bracket-motor assembly from casing by removing the nuts and bolts. (The casing may be left in-line)
4. Unscrew the two allen bolts and remove diffuser. Diffuser may need to be pried off with a flathead screwdriver.
5. Remove screw and O-ring from front side of impeller. Screw is a left-handed thread and loosens in a clockwise direction.
6. Remove cap covering shaft at back of motor. Unscrew the impeller by twisting counter clockwise while holding the shaft with a large screwdriver to prevent shaft rotation.
7. Remove ceramic piece from impeller (if replacing the seal).
8. Detach bracket from motor.
9. Remove seal from bracket by pressing out from the back (if replacing the seal). Do not dig out from the front.
IMPELLER*SEAL DRAIN PLUG
& O-RING
DESCRIPTION P/N
SEAL 1000.0414
IMPELLER *DEPENDS ON MODEL CONSULT FACTORY
O-RING, CASING TO BRACKET 9000.061
CASING 9000.070
DRAIN PLUG 1000.110
O-RING, DRAIN PLUG 805-0112
DIFFUSER 9000.120
O-RING, DIFFUSER 9000.121
LID 9000.779
HARDWARE KIT 9000.502
SLINGER 1000.010V
BRACKET 9000.030
O-RING, LID 9000.777
STRAINER BASKET 9000.778
2” ADAPTOR (2 1/2” UNION X 2” SOCKET) 9000.070-2
DESCRIPTION P/N
SEAL 1000.0414
IMPELLER *DEPENDS ON MODEL CONSULT FACTORY
O-RING, CASING TO BRACKET 8000.061
CASING 8000.070
DRAIN PLUG 1000.110
O-RING, DRAIN PLUG 805-0112
DIFFUSER 8000.120
O-RING, DIFFUSER 8000.121
LID 1000.771-L
HARDWARE KIT 8000.502
SLINGER 1000.010V
BRACKET 8000.030
O-RING, LID 1000.771-O
STRAINER BASKET 8000.778
DIFFUSER PLATE 8000.141
ADAPTER, UNION X 2” SLIP 400-5081-2B
ALPHA PRIMER
STRAINER
BASKET
HARDWARE
BRACKET
O-RING, CASING TO
BRACKET O-RING
(DIFFUSER)
DIFFUSER
IMPELLER*
BRACKET
O-RING, CASING TO
BRACKET
SEAL DRAIN PLUG
& O-RING
DIFFUSER
O-RING
(DIFFUSER)
LID
O-RING, LID
STRAINER
BASKET
HARDWARE
CHAMPION PRIMER, POWER PRIMER
CASING
LID
O-RING, LID
CASING
DIFFUSER PLATE
®
PRIMER ® PRIMER
SUCTION LIFT
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.
SLINGER
SLINGER
2” ADPATOR
( 2 1/2” UNION X 2” SOCKET)

© MDM INC.
WWW.MDMINC.COM
Efficiency and Longevity.
PROUDLY MADE
IN THE USA
© MDM INC.
WWW.MDMINC.COM
Efficiency and Longevity.
PROUDLY MADE
IN THE USA
MATERIAL: GLASS-FILLED POLYPROPYLENE
HARDWARE: STAINLESS STEEL HARDWARE
OPTIONS: SALTWATER SERVICE
ACCESORIES: SWING CHECK VALVES (1.5”, 2”, 3”)
INSTALLATION
Please read carefully. When properly installed the Sequence®Primer will provide dependable trouble-free service.
1. Locate pump as near to the water source as possible. A flooded suction configuration is mandatory. This pump is self-priming, however, there must be fluid in the pump
for it to function properly. A vertically installed check valve is recommended for non-flooded suction. (Figure 1)
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.)
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 must not be run dry. We recommend a flooded suction installation. Please read carefully. When properly installed, the Sequence®pump will provide
dependable, trouble-free service.
6. Before starting pump, the priming pot must be filled with water.
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 Sequence®Primer 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 MDM for assistance.
PRIMER
SWING CHECK VALVE
FLOODED SUCTION
WARNING: DO NOT RUN DRY.
(FIGURE 1)
BALL VALVE
PUMP END ASSEMBLY
1. Inspect all pump parts (O-ring, O-ring groove, impeller hub ID, motor shaft, etc.) and clean if necessary.
2. If replacing the seal, apply sealant in bracket bore hole and around seal case according to sealant instructions. We recommend using Gasgacinch®. Silicone sealant can also be used.
3. Press seal into bracket while taking care not to damage seal face.
4. Place slinger (rubber washer) over motor shaft and mount bracket to motor.
5. If replacing the seal, carefully lubricate the boot around ceramic piece and press it into the impeller hub making certain that the ceramic is in evenly. The sealing
surface should be parallel with the impeller hub.
6. Apply CLEAN water to the carbon-graphite and seal seat sealing surfaces. Do not use silicon lubricants or grease.
7. Mount bracket to motor face.
8. Thread impeller onto shaft and install o-ring and screw. 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. Place diffuser over impeller and tighten allen bolts used to hold diffuser in place. Note: Be sure diffuser is in an upright position. (The word “top” appears on the
diffuser as an indicator).
10. Seat O-ring on diffuser. Assemble diffuser to bracket with 2 allen screws.
11. Seat O-ring in bracket slot and assemble casing to bracket.
12. Install drain plugs with its O-rings in casing drain holes.
DISASSEMBLY
1. Shut off power to motor before disconnecting any electrical wiring.
2. Close all necessary valves on inlet and discharge lines and drain the pump by removing both drain plugs. The water will drain faster if you loosen the lid.
3. Disassemble bracket-motor assembly from casing by removing the nuts and bolts. (The casing may be left in-line)
4. Unscrew the two allen bolts and remove diffuser. Diffuser may need to be pried off with a flathead screwdriver.
5. Remove screw and O-ring from front side of impeller. Screw is a left-handed thread and loosens in a clockwise direction.
6. Remove cap covering shaft at back of motor. Unscrew the impeller by twisting counter clockwise while holding the shaft with a large screwdriver to prevent shaft rotation.
7. Remove ceramic piece from impeller (if replacing the seal).
8. Detach bracket from motor.
9. Remove seal from bracket by pressing out from the back (if replacing the seal). Do not dig out from the front.
IMPELLER*SEAL DRAIN PLUG
& O-RING
DESCRIPTION P/N
SEAL 1000.0414
IMPELLER *DEPENDS ON MODEL CONSULT FACTORY
O-RING, CASING TO BRACKET 9000.061
CASING 9000.070
DRAIN PLUG 1000.110
O-RING, DRAIN PLUG 805-0112
DIFFUSER 9000.120
O-RING, DIFFUSER 9000.121
LID 9000.779
HARDWARE KIT 9000.502
SLINGER 1000.010V
BRACKET 9000.030
O-RING, LID 9000.777
STRAINER BASKET 9000.778
2” ADAPTOR (2 1/2” UNION X 2” SOCKET) 9000.070-2
DESCRIPTION P/N
SEAL 1000.0414
IMPELLER *DEPENDS ON MODEL CONSULT FACTORY
O-RING, CASING TO BRACKET 8000.061
CASING 8000.070
DRAIN PLUG 1000.110
O-RING, DRAIN PLUG 805-0112
DIFFUSER 8000.120
O-RING, DIFFUSER 8000.121
LID 1000.771-L
HARDWARE KIT 8000.502
SLINGER 1000.010V
BRACKET 8000.030
O-RING, LID 1000.771-O
STRAINER BASKET 8000.778
DIFFUSER PLATE 8000.141
ADAPTER, UNION X 2” SLIP 400-5081-2B
ALPHA PRIMER
STRAINER
BASKET
HARDWARE
BRACKET
O-RING, CASING TO
BRACKET O-RING
(DIFFUSER)
DIFFUSER
IMPELLER*
BRACKET
O-RING, CASING TO
BRACKET
SEAL DRAIN PLUG
& O-RING
DIFFUSER
O-RING
(DIFFUSER)
LID
O-RING, LID
STRAINER
BASKET
HARDWARE
CHAMPION PRIMER, POWER PRIMER
CASING
LID
O-RING, LID
CASING
DIFFUSER PLATE
®
PRIMER ® PRIMER
SUCTION LIFT
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.
SLINGER
SLINGER
2” ADPATOR
( 2 1/2” UNION X 2” SOCKET)

© MDM INC.
WWW.MDMINC.COM
Efficiency and Longevity.
PROUDLY MADE
IN THE USA
© MDM INC.
WWW.MDMINC.COM
Efficiency and Longevity.
PROUDLY MADE
IN THE USA
INSTALLATION AND SERVICE MANUAL
TYPE: SELF PRIMING CENTRIFUGAL
MOTOR: NEMA 56Y
HORSEPOWER: 1/3, 1/2 (1750 RPM) 2 (3450 RPM)
PRIMER ALPHA: 2” FNPT INLET AND DISCHARGE WITH 2” & 2 1/2” SLIP ADAPTERS
PRIMER CHAMPION: 2” FNPT INLET AND DISCHARGE WITH 2” SLIP ADAPTERS
MATERIAL: GLASS-FILLED POLYPROPYLENE
HARDWARE: STAINLESS STEEL HARDWARE
OPTIONS: SALTWATER SERVICE
ACCESORIES: SWING CHECK VALVES (1.5”, 2”, 3”)
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.
Model 3700PRM21 4900PRM21 6600PRM24 6800PRM19 7800PRM24 6300PRM77 8100PRM81 9300PRM83
INLET 2” 2” 2” 2” 2” 2” 2” 2”
DISCHARGE 2” 2” 2” 2” 2” 2” 2” 2”
MAX FLOW (gph) 3700 4900 6600 6800 7800 6300 8100 9300
MAX HEAD (feet) 21’ 21’ 24’ 19’ 24’ 77’ 81’ 83”
MAX POWER (watts) 228 310 457 369 504 1496 1807 2222
MAX CURRENT (amps) 2.76 @115V 3.37 @115V 4.61 @115V 3.93 @115V 5.02 @115V 8.7 @ 230 9.8 @ 230 11.4 @ 230
VOLTS 115/230 115/230 115/230 115/230 115/230 230 /115 230 /115 230 /115
MOTOR HP 1/2, 1/3 1/2, 1/3 1/2, 1/3 1/2, 1/3 1/2, 1/3 2 2 2
MOTOR TYPE 56Y 56Y 56Y 56Y 56Y 56Y 56Y 56Y
MOTOR ENCLOSURE TEFC TEFC TEFC TEFC TEFC ODP ODP ODP
®
PRIMER ®
PRIMER
MAINTENANCE WARNING: EYE PROTECTION IS STRONGLY RECOMMENED
Lubrication
Motor - Permanently Lubricated ball bearings - no service required.
Rotary Seal - Requires no lubrication after assembly.
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).
Insufficient Prime
Prime system with water and purge all air from suction piping. The primer series pumps use low
RPM motors and achieving full system prime could take multiple hours. *This resolution pertains
only to the Primer Champion and the Primer Alpha models.
Air leak Fix air leaks at fittings, connections, priming pot lid, etc. This typically occurs on the intake side.
The priming pot lid o-ring can be lubricated with silicone grease.
System Incompatibility Verify hydraulic compatibility: i.e. pump & pipe are sized for the system.
Low Flow
Air leak Fix air leaks at fittings, connections, priming pot lid, etc. This typically occurs on the intake side.
The priming pot lid o-ring can be lubricated with silicone grease.
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.
PRIMER ALPHAPRIMER CHAMPION
S/N: XXXX-XXXXXX
XXXXPRMXX
PRIMER CHAMPION PRIMER ALPHA PRIMER POWER
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. Compilation Installation Manual 2017.indd Adobe Indesign CC 03-28-17
PLEASE FILL IN FOR FUTURE REFERENCE:
MODEL: ___________________________
SERIAL NUMBER: ____________________
DATE PURCHASED: ___________________
* PLEASE FILL OUT THE WARRANTY REGISTRATION
CARD INCLUDED WITH THIS PRODUCT OR ONLINE
AT: WWW.MDMINC.COM
*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.
MDM INCORPORATED
3345 N. Cascade Ave • Colorado Springs, CO • 80907
Toll Free Phone [phone] • Fax [phone]
www.mdminc.com • [email protected]