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Pipeline Pump Instructions -
AquaStar Pool Products
7.1 SERVICING
Always disconnect power to the Pipeline Pump at the circuit breaker and disconnect
the communication cable before servicing the pump. Failure to do so could result in
death or serious injury. Read all service instructions before working on the pump. DO
NOT open or disassemble the motor or variable speed drive. This component is not serviceable and will void
the warranty.
7.1.1 DISASSEMBLING THE PUMP
On occasion it may become necessary to remove debris from the impeller/diffuser, or replace internal
pump components. In order to access these internal components follow the instructions below. For specific
replacement instructions, follow the instructions included with your replacement kit.
• Press “Stop” button on the pump and turn off power at the circuit breaker. Remove communication cable
if installed.
• Close valves on inlet and outlet of pump.
• Turn the locking ring and lid counter-
clockwise and remove from pump housing.
Then remove the drain plugs from the pump
housing, this will allow water to empty from
housing.
• Using a 7/16” wrench remove the eight (8)
seal plate bolts and set aside.
• Gently pull the motor / seal plate
subassembly out of the pump housing.
• Using a #1 Phillips screwdriver remove the
two screws that retain the diffuser.
• Using a #2 Phillips screwdriver rotate the left-hand impeller screw clockwise to remove and set aside.
• Insert a 3/8” slotted screwdriver into the hole on the fan end of the motor. This will keep the motor shaft
from rotating as you unthread the impeller from the motor shaft.
The pump impeller may have sharp edges that could potentially cut or scratch the
user’s hands. Use safety gloves when holding or rotating the impeller.
• Using a 9/16” wrench, remove the four (4) bolts that hold the motor to the seal plate.
Note: Use caution not to scratch or damage the shaft seal. These surfaces must maintain a high polish in
order to maintain a seal.
7.1.2 Reassembling of pump
To reassemble the pump, simply reverse the disassembly process with a few important notes.
• When reinstalling the motor to the seal plate, torque the four (4) bolts to 80 in-lbs.
• When reinstalling the impeller to the motor shaft, lightly hand tighten.
• When reinstalling the impeller retainer left-hand screw, ensure that the sealing washer is in good
condition and in place then hand tighten the screw turning counter-clockwise.
• When reinstalling the diffuser, ensure that the four (4) alignment holes on the seal plate match up with
the four (4) posts on the diffuser. Hand tighten the two (2) Phillips screws to retain the diffuser.
• Inspect and lubricate the diffuser O-ring and the seal plate O-ring. Replace these O-rings if damaged.
• When reinstalling the motor / seal plate subassembly, finger tighten all eight (8) bolts and then torque
each bolt to 80 in-lbs alternating in a star pattern as each bolt is fully tightened.
• Follow 4.1 Startup instructions.
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