Sequence Primer Alpha

The Sequence Primer Alpha is for the larger Koi ponds out there. This type of pump is self priming and has an integrated 250 cubic inch strainer basket.

Out-of-pond construction - Not Submersible
Ports are 2" FNPT suction and 2" FNPT discharge.
Quiet operation
Units are pre-wired with an 8' cord and molded 115V plug.
Housing is molded of high strength, glass filled polypropylene.
Dry run resistant mechanical seals.
Stainless steel hardware is standard.
The motors are TEFC, for excellent protection.
Rebuildable, industrial grade motors.
3 year limited warranty!

Model: 6800PRM19
Size: 1/3 H.P.
Head: 17' MAX
Flow: 1500-5400 GPH
Draw: 376 WATTS
Weight: 50 lbs
Price: $979.00

Model: 7800PRM24
Size: 1/2 H.P.
Head: 23' MAX
Flow: 1500-6600 GPH
Draw: 539 WATTS
Weight: 52 lbs
Price: $1,006.00

For more information, read:

Sequence Self-Primer Information

Model	6800PRM19	7800PRM24
INLET	2"	2"
DISCHARGE	2"	2"
MAX FLOW (gph)	6800	7800
MAX HEAD (feet)	19'	24'
MAX POWER (watts)	369	504
MAX CURRENT (amps)	3.93	5.02
@ (volts)	115	115
MOTOR HP	1/2, 1/3	1/2, 1/3
MOTOR ENCLOSURE	TEFC	TEFC

Pump End Assembly

Clean and inspect all pump parts (O-ring, seal seats, motor shaft, etc.).
Apply sealant in bracket bore hole and possibly around seal case according to sealant instructions. Note: For SS seal, chamfer the edge of the bracket bore hole.
Press carbon graphite seal into bracket while taking care not to damage carbon graphite face.
Place slinger (rubber washer) over motor shaft and mount bracket to motor.
Carefully lubricate boot or O-ring around ceramic piece and press into impeller. Note: Use glycerin for seal insertion.
Sparingly lubricate sealing surfaces. Water, glycerin, or a light-weight machine oil may be used. Do not use silicon lubricants or grease!
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.
Place diffuser over impeller and tighten allen bolts used to hold diffuser in place. Note: be sure diffuser is in an upright position. (The words "top" appears on the diffuser as an indicator)
Seat O-ring on lip of diffuser.
Seat O-ring, in bracket grove and assemble volute to bracket.
Install drain plugs with O-rings in volute drain holes.

Disassembly

Shut off power to motor before disconnecting any electrical wiring from the back of the motor.
Disassemble the bracket-motor assembly from the volute, by removing the 8 bolts. (The volute may be left in-line if you wish.)
Remove the two allen bolts and the diffuser.
Remove cap covering shaft at back of motor and with a large screwdriver, prevent shaft rotation. Remove the screw and O-ring from the front side of impeller and unscrew the impeller.
Remove ceramic piece from impeller.
Detach bracket from motor.
Remove carbon-graphite seal from bracket by pressing out from the back. Do not dig out from the front!

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.

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